An aircraft tire storage device

Abstract

The present invention discloses an aircraft tire storage device, which includes multiple steel pipes, semi-circular structures located at both ends of the steel pipes, a conveyor belt device, and a conveyor belt braking device; both ends of the steel pipes are rotatably connected to the semi-circular structures respectively, the conveyor belt device is located at the bottom end of the semi-circular structures and is used to drive the tires to rotate, and the conveyor belt braking device is used to brake the conveyor belt device; the outer edge of the semi-circular structure is a gear structure, which cooperates with a worm, and the rotation of the worm drives the storage device to rotate, so that the aircraft tires enter and exit the storage device in a rolling manner. Through the present invention, tire deformation can be effectively prevented, the regular automatic flipping of the tires can be accurately realized, the tires can enter and exit the storage device in a rolling manner, and the access method of multiple people carrying and lifting can be replaced.

Description

Technical Field

[0001] It relates to the technical field of tire storage, and specifically provides an aircraft tire storage device. Background Art

[0002] Aircraft tires are one of the main components of an aircraft. They need to withstand the high speed and high internal pressure during aircraft landing, and are of great significance for the safe takeoff, landing and taxiing of the aircraft. Aircraft tires are high-consumption items during the aircraft's takeoff and landing process. Especially during landing, they will generate huge friction with the runway. Therefore, aircraft tires need to be regularly inspected and replaced.

[0003] As a consumable commonly used in aircraft operation, the normal service life of an aircraft tire installed on an aircraft once is generally 150 - 200 flight takeoffs and landings. However, during flight, the aircraft may also experience high-altitude cold currents that may cause the tires to freeze and crack, and the aircraft's sharp braking may cause tire blowouts and other multiple factors that shorten the service life of the tires. In addition, the production and procurement process of aircraft tires also requires a certain period. Therefore, it is a basic requirement for airlines to store a certain number of aircraft tires daily to ensure aircraft operation. Therefore, it is particularly important to scientifically manage the daily storage work of aircraft tires.

[0004] As consumable aviation materials, airlines and aircraft maintenance enterprises will reserve a large number of spare aircraft tires to ensure the normal operation of aircraft. Moreover, China's civil aviation documents clearly stipulate the storage requirements for flight tires:

[0005] ① Tires should be stored in a warehouse. The warehouse should have good ventilation conditions and avoid direct sunlight.

[0006] ② Tires in the warehouse should be more than 1 meter away from heat sources to prevent local heating of the tires, and should not be stored together with oils, flammable items, chemically corrosive items and other items that are likely to deteriorate rubber.

[0007] ③ Aviation tires should be placed vertically in a single layer along the tread surface, and should not be placed flat and stacked or hung through the center. The stored tires should be rotated at the fulcrum at least once every quarter.

[0008] ④ Tires should be stored in batches according to the production and warehousing time. The first producers and the first warehoused ones should be used first.

[0009] According to the above requirements, the current conventional storage method of aircraft tires is as Figure 1 shown. The tires are placed on the shelves for zone management, and manpower is required to regularly turn the tires to prevent deformation and uneven stress. The problems existing in the current storage method are as follows:

[0010] ① Conventional shelves do not consider the stress problem when storing tires, such as Figure 1The tire shown is fully supported on two square cross - beams of the shelf. Storing it in this way for a long time will cause the tire to deform. Even if the tire is regularly flipped, uneven stress points will be formed, affecting the tire life and the safety of tire use.

[0011] ② Flipping the tire is very laborious. Especially for large - sized tires, multiple people are required to cooperate to achieve flipping, and it is very difficult to reach the required angle. Considering the uniform stress, it is required that the tire be flipped once to rotate 90°.

[0012] ③ Storing and retrieving the tire on the shelf is difficult because the height of the shelf and the weight of the tire also require multiple people to cooperate to store and retrieve the tire.

[0013] The utility model patent CN210556166U discloses a tire rotary storage rack. As Figure 2 shown, it includes a frame body (1) and at least two pairs of support rollers (2) for supporting the tire. Each pair of support rollers (2) is arranged in parallel, and each pair of support rollers (2) is arranged at intervals from bottom to top on the frame body (1). Each pair of support rollers (2) is connected with a driving handwheel (31) and a transmission component (32) for driving the pair of support rollers to rotate in the same direction. On the periphery of each pair of support rollers on the frame body, there are a first anti - tipping mechanism (4) and a second anti - tipping mechanism (5) for cooperating to block the tire to prevent the tire from tipping over. The second anti - tipping mechanism (5) includes a guide rod (51). It also discloses a tire rotary storage device, which includes at least two tire rotary storage racks arranged side by side. The same - height pairs of support rollers on adjacent tire rotary storage racks are connected by a coupling. Using this tire rotary storage rack and tire rotary storage device saves time and effort, is neatly arranged, and saves space. However, the above problems are still not solved. Summary of the Invention

[0014] Based on the above technical problems, the present invention proposes an aircraft tire storage device, which can reduce and avoid tire deformation caused by improper storage, meet the requirement of regularly and automatically flipping the tire by 90°, and the tire enters and exits the storage device in a rolling manner instead of being carried by multiple people.

[0015] The present invention proposes an aircraft tire storage device, which includes multiple steel pipes, semi - circular structures at both ends of the steel pipes, a conveyor belt device, and a conveyor belt braking device; both ends of the steel pipe are rotatably connected to the semi - circular structures respectively. The conveyor belt device is located at the bottom of the semi - circular structures and is used to drive the tire to rotate. The conveyor belt braking device is used to brake the conveyor belt device; the outer edge of the semi - circular structure is a gear structure, which cooperates with a worm. By rotating the worm, the storage device is driven to rotate, so that the aircraft tire enters and exits the storage device in a rolling manner.

[0016] Furthermore, the aircraft tire storage device is placed on the shelf, and the worm is arranged at the corresponding position on the shelf.

[0017] Further, the steel pipes are four rotatable cylinders and have sufficient hardness to support the aircraft tires thereon. The first steel pipe and the second steel pipe are respectively located at the horizontal positions of the semi-circular structure to prevent the tires from disengaging when rotating and to assist the tires in flipping; the third steel pipe and the fourth steel pipe are respectively located at positions forming a 45° angle with the first steel pipe and the second steel pipe, and jointly support the tires with the bottom conveyor belt device to achieve uniform force during the tire storage process.

[0018] Further, both ends of the conveyor belt device are composed of two rotatable high-hardness steel pipes and a flexible conveyor belt. The length of the conveyor belt is determined by the size of the angle formed by its two end points to the center of the circle, and this angle is between 30° and 60°.

[0019] Further, the braking device adopts a numerical control method, which can control the speed, movement direction, regular opening period and single rotation duration of the conveyor belt device, and realize the regular automatic flipping of the tire by 90°.

[0020] Further, in order to prevent the tire from tilting when rotating, a retaining bar is used to connect the first steel pipe and the second steel pipe. Both ends of the retaining bar are clamped on the steel pipe and are not affected by the rotation of the steel pipe.

[0021] The beneficial effects brought by the technical solution of the present invention:

[0022] (1) The present invention designs the aircraft tire storage device into a semi-cylindrical structure and distributes the positions of the circular steel pipes supporting the tires from the perspective of uniform force, which can effectively prevent the tires from deforming;

[0023] (2) A flexible conveyor belt device is added to the bottom of the storage device, and the requirement of regularly and automatically flipping the tire by a precise angle can be realized through a numerical control method, replacing the manual flipping method;

[0024] (3) Through the design of gears and worm gears, the access device realizes the inclination of the whole device, so that the tires roll in and out of the storage device, replacing the access method of multiple people lifting. In addition, when storing a large number of tires, this storage device can be made into a multi-layer storage structure.

[0025] (4) The positions of the circular steel pipes supporting the tires are distributed from the perspective of uniform force, reducing the wear of the tires during storage and preventing the tires from deforming. Description of the Drawings

[0026] Figure 1 is the conventional storage method for aircraft tires;

[0027] Figure 2 is a tire rotating storage rack of patent CN210556166U;

[0028] Figure 3It is a diagram of a tire storage device;

[0029] Figure 4 It is a schematic diagram of a conveyor belt;

[0030] Figure 5 It is a distribution diagram of steel pipes and conveyor belts;

[0031] Figure 6 It is an analysis diagram of the conveyor belt position;

[0032] Figure 7 It is the design of the tilting structure of the access device;

[0033] Figure 8 It is a layered storage structure. Specific embodiments

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0035] As Figure 3 described, the present invention proposes an aircraft tire storage device, which includes a plurality of steel pipes 1, semi-circular structures 2 at both ends of the steel pipes, a conveyor belt device 3, and a braking device 4; both ends of the steel pipe 1 are rotatably connected to the semi-circular structure 2 respectively, the conveyor belt device 3 is located at the bottom end of the semi-circular structure 2 and is used to drive the tire to rotate, and the braking device 4 is used to brake the conveyor belt device; the outer edge of the semi-circular structure 2 is a gear structure, which cooperates with the worm, and the rotation of the worm drives the storage device to rotate, so that the aircraft tire enters and exits the storage device in a rolling manner, and the storage device is placed on the shelf 9.

[0036] The tire storage device is a structure similar to a semi-cylindrical body, which consists of four cylindrical steel pipes 1, a conveyor belt device 3 fixed at the bottom end, and semi-circular structures 2 at both ends. The inner diameter of the semi-circular structure 2 is equal to the diameter of the stored tire and the conveyor belt braking device, as Figure 3 shown.

[0037] A tire support structure is composed of four cylindrical steel pipes 1 and a bottom conveyor belt device 3. The four steel pipes 1 are rotatable cylinders and have sufficient hardness to support the aircraft tires thereon. The first steel pipe and the second steel pipe are respectively located at the horizontal positions of the semi-circular structure, and their functions are to prevent the tires from slipping off when rotating and to assist the tires in flipping; the third steel pipe and the fourth steel pipe are respectively located at an angle of 45° with the first steel pipe and the second steel pipe, and jointly support the tires with the bottom conveyor belt device 3 to achieve uniform force during the tire storage process. When the conveyor belt device 3 drives the tires to rotate, the four steel pipes 1 are also rotated by the frictional force of the tires, thus realizing the function of assisting the tires to rotate. In order to prevent the tires from tipping when rotating, a retaining bar 5 is used to connect the first steel pipe 1 and the second steel pipe 1. The two ends of the retaining bar 5 are clamped on the steel pipe 1 and are not affected by the rotation of the steel pipe 1.

[0038] Both ends of the conveyor belt device 3 are composed of two rotatable high-hardness round pipes 6 and a flexible conveyor belt 7, as Figure 4 shown. The moving direction of the conveyor belt 7 is the direction of the tire running surface, and the length of the conveyor belt 7 is the circulating distance between points A and B, as Figure 5 shown. The flexible conveyor belt 7 will form a curved surface that fits the tire surface under the pressure of the tire. The tire rotates under the combined action of the conveyor belt 7 and the round pipe 6. The length of the conveyor belt 7 is determined by the size of the angle formed by points A and B to the center of the circle, and this angle is between 30° and 60°.

[0039] The following is a reasoning analysis based on specific data:

[0040] The diameter of the tire is 80 cm, the diameter of the storage device is equal to the diameter of the aircraft tire, a = b = 40 cm, as Figure 6 shown:

[0041] When the angle formed by points A and B to the center of the circle is 60°, the straight-line distance c of AB = 40 cm (c2 = a2 + b2 - 2ab×cos60°), the arc length L of AB = 41.9 cm, L = n (central angle) × π × r (radius) / 180, and the maximum deformation generated from c to L is about 2 cm; if the angle of the conveyor belt 7 to the center of the circle is greater than 60°, the conveyor belt 7 bears all the pressure of the tire, and the supporting effects of the third steel pipe and the fourth steel pipe are weakened. At this time, the conveyor belt 7 is longer and the deformation is larger, and the internal structure and cost of the conveyor belt need to be considered. When the angle formed by points A and B to the center of the circle is 30°, c = 20.6 cm, L = 20.7 cm, and the maximum deformation generated from c to L is 0.1 cm. At this time, the contact surface between the tire and the conveyor belt 7 is small, and the functional design of the conveyor belt 7 loses its meaning. Therefore, it is recommended that the angle formed by the two ends of the conveyor belt 7 to the center of the circle be greater than 30°. After the above calculations, the angle formed by the two ends of the conveyor belt 7 to the center of the circle is between 30° and 60°.

[0042] The braking device 4 adopts a numerical control method and can control the speed, movement direction, regular opening period, and single rotation duration of the conveyor belt to meet the storage requirement of automatically flipping the tire by 90° regularly. In addition, the braking device needs to be calibrated regularly to ensure the accuracy of the tire rotation angle.

[0043] To solve the problem that the original access of aircraft tires requires multiple people to carry and lift, the outer edges of the semi-circular structures 2 at both ends of the storage device are designed as gears and are located on the worm drive device at the lower end. The entire storage device rotates through the rotation of the worm to achieve a 0° to 90° roll, as Figure 7 shown, enabling the aircraft tire to enter and exit the storage device in a rolling manner.

[0044] To prevent the tire from falling off when the storage device is tilted, the tire can be fixed by the binding ropes on the two side bars 5. The binding ropes are made of non-elastic nylon material. In addition, when the storage device is tilted, there is a certain height from the ground. A buffer plate 8 with the same height is customized according to this height to achieve a storage and retrieval process of the tire without impact, smoothly, and labor-saving.

[0045] When storing a large number of tires, to save space and facilitate access, the shelf 9 can be designed as a layered structure as Figure 8 shown. By combining the automated warehousing system with the present invention, when retrieving the tires at a high position, the movement method of the stacker is used to pick up the tires. This method replaces the previous method of standing on a ladder to pick up the tires at a high position, which is both labor-saving and safe.

[0046] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An aircraft tire storage device, the storage device comprising a plurality of steel pipes, a semicircular structure at both ends of the steel pipes, a conveyor belt device and a conveyor belt brake device; the two ends of the steel pipes are rotatably connected to the semicircular structure respectively, the conveyor belt device is located at the bottom end of the semicircular structure, and is used to drive the tire to rotate, and the conveyor belt brake device is used to brake the conveyor belt device; the outer edge of the semicircular structure is a gear structure, and the gear structure cooperates with a worm, and the storage device is driven to rotate by the rotation of the worm, so that the aircraft tires can enter and exit the storage device in a rolling manner; The two ends of the conveyor belt device are composed of two rotatable high-hardness steel pipes and a flexible conveyor belt. The length of the conveyor belt is determined by the angle formed by its two end points to the center of the circle, and the angle rotates between 30° and 60°.

2. The aircraft tire storage device according to claim 1, characterized in that, The aircraft tire storage device is placed on a shelf, and the worm is arranged at a corresponding position of the shelf.

3. The aircraft tire storage device according to claim 1, characterized in that, The steel pipes are 4 rotatable cylinders and have sufficient hardness to support the aircraft tires thereon. The first steel pipe and the second steel pipe are respectively located at horizontal positions of the semicircular structure to prevent the tires from detaching when the tires rotate and to assist the tires to flip over. The third steel pipe and the fourth steel pipe are respectively located at a 45° angle with the first steel pipe and the second steel pipe, and together with the bottom conveyor belt device support the tires to achieve uniform force during tire storage.

4. The aircraft tire storage device according to claim 1, characterized in that, The braking device adopts numerical control, which can control the speed, movement direction, regular opening cycle and single rotation duration of the conveyor belt device, so as to realize regular and automatic 90° flipping of the tire.

5. The aircraft tire storage device according to claim 3, wherein, In order to prevent the tire from tilting when rotating, the first steel pipe and the second steel pipe are connected by a baffle, and both ends of the baffle are clamped on the steel pipe and are not affected by the rotation of the steel pipe.

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