Tool for replacing tires and brake hubs of civil aviation airliners

Abstract

The utility model discloses a tool for replacing tires and brake hubs of a civil aircraft. The tool comprises a support, a hydraulic device and two lifting arms. The hydraulic device is fixed to the support, the two lifting arms are arranged on the support in a spaced mode, the distance between the two lifting arms is adjustable, and the lifting arms ascend and descend under the action of the hydraulic device. According to the tool, the defect that a specific aircraft type corresponds to a specific tool at present is overcome, the tool lifting arm can be adjusted according to tires of different sizes, the sizes and the weights of aircraft tires and brake hubs of different models are considered, adjustability and universality are achieved, the tool can be suitable for the aircraft tires and the brake hubs of various models, and the cost for purchasing multiple devices is reduced.

Description

Technical Field

[0001] This utility model relates to the field of aircraft ground maintenance technology, specifically to a tooling for replacing tires and brake drums of civil aircraft. Background Technology

[0002] During aircraft landing, braking is frequently used to decelerate the vehicle, leading to wear and tear on the tires and brake drums. Regular tire and brake drum replacement is necessary during routine aircraft maintenance. Currently, the tooling used in line maintenance for tire and brake drum replacement can only handle the replacement and transport of tires or brake drums of specific sizes. Different tooling is required for different aircraft models. Utility Model Content

[0003] This utility model provides a tooling for replacing tires and brake drums of civil aircraft, aiming to solve the problem of poor adaptability of existing tooling in the background art.

[0004] The technical solution provided by this utility model is as follows:

[0005] A tooling for replacing tires and brake drums of civil aircraft includes a bracket, a hydraulic device, and two lifting arms.

[0006] The hydraulic device is fixed on the bracket, and the two lifting arms are spaced apart on the bracket. The distance between the two lifting arms is adjustable, and the lifting arms are raised and lowered under the action of the hydraulic device.

[0007] Furthermore, the support includes a base, a support column, and a crossbar. There are two support columns, which are mounted on the base. A track is provided on the side of each support column, and a crossbeam is slidably mounted on the track. The lifting arm is slidably connected to the crossbeam, and the output end of the hydraulic device is connected to the crossbeam.

[0008] Furthermore, the lifting arm includes a connecting arm and a lower support arm, the connecting arm and the lower support arm are fixed to form an L-shaped structure, and in the natural state the lower support arm is perpendicular to the support column;

[0009] The outer side of the crossbeam is provided with a slide rail, and the end of the connecting arm is provided with a connecting block, which is slidably mounted on the slide rail.

[0010] Furthermore, the connecting arm and the connecting block are connected by a pivot pin, allowing the connecting arm and the lower support arm to move circumferentially around the connecting block.

[0011] Furthermore, the hydraulic device includes a hydraulic cylinder, a connecting plate, and a connecting rod. The connecting rod is connected to the hydraulic cylinder through the connecting plate, and the output end of the hydraulic cylinder is connected to the crossbeam. The connecting rod and the lifting arm are located on both sides of the crossbeam, respectively.

[0012] Furthermore, the base has a U-shaped structure, the support column is located on the side of the base away from the opening end, and the support column and the base are an integral structure;

[0013] In its natural state, the lifting arm extends in the same direction as the opening of the base.

[0014] Furthermore, the base is provided with multiple rollers at its bottom.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This tooling uses a hydraulic device as its power source, which features fast lifting speed and strong force. It is also foldable and does not take up space, nor does it require electricity. It can greatly shorten the maintenance and replacement time of aircraft tires and brake drums and improve work efficiency.

[0017] 2. The tooling's support frame and lifting arm are made of high-strength materials, providing excellent stability and load-bearing capacity. Furthermore, the rear stop arm can be adjusted at an angle after lifting, reducing the risk of tire tipping and accidents, thus enhancing operational safety.

[0018] 3. The lower support arm of this tooling can be adjusted for tires of different sizes, taking into account the size and weight of different models of aircraft tires and brake drums. It has adjustability and versatility, and can be used for a variety of aircraft tires and brake drums, thus reducing equipment costs.

[0019] 4. High degree of automation: By adopting advanced automation technology, manual operation is reduced, replacement efficiency is improved, and the risk of human error is reduced;

[0020] 5. Compact structure and easy operation: The tooling equipment should have a compact structural design to facilitate operation in a limited space, while ensuring that the operation is simple and easy to learn, reducing professional training costs;

[0021] 6. Economic efficiency: While ensuring safety and efficiency, minimize manufacturing and maintenance costs to reduce the company's financial burden;

[0022] 7. Compatibility: The tooling and equipment should be able to adapt to different models of civil aircraft and have good versatility. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the tooling structure in an embodiment of the present utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the tooling structure in an embodiment of the present utility model. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the tooling structure in an embodiment of the present utility model. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the tooling structure in an embodiment of the present utility model. Figure 4 ;

[0027] Figure 5 This is an exploded view of the hydraulic device in an embodiment of this utility model.

[0028] The attached figures are labeled as follows:

[0029] 1-Bracket, 101-Base, 102-Support Column, 103-Crossbeam, 104-Roller, 105-Slide Rail, 2-Lifting Arm, 201-Connecting Arm, 202-Lower Support Arm, 203-Connecting Block, 3-Hydraulic Device, 301-Hydraulic Cylinder, 302-Connecting Plate, 303-Connecting Rod, 47-Connecting Plate, 48-Dustproof Ring, 49-Cylinder Head, 50-Piston Rod Main Seal Ring, 51-Buffer Ring, 52-Seal Ring, 53-Piston, 54-Outer Cylinder, 55 - Cylinder, 56- First sealing ring, 57- First bolt, 58- Screw, 59- Second sealing ring, 60- Steel ball, 61- Check ball, 62- Elastic pin, 65- Cylinder base, 66- Tie rod, 67- Third sealing ring, 68- Support ring, 69- Nut, 70- Fourth sealing ring, 71- Pressure relief valve, 72- Valve stem, 73- Second bolt, 74- Fifth sealing ring, 75- Positioning ball, 80- Pressure ball, 81- Threaded sleeve, 82- Valve seat. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the detailed description of the embodiments of this application provided below with reference to the accompanying drawings is intended merely to illustrate selected embodiments of this application and is not intended to limit the scope of protection claimed by this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0034] See Figure 1 This utility model provides a tooling for replacing tires and brake drums of civil aircraft, including a bracket 1, a hydraulic device 3 and two lifting arms 2.

[0035] The hydraulic device 3 is fixed on the support 1, and two lifting arms 2 are spaced apart on the support 1. The distance between the two lifting arms 2 is adjustable. The lifting arms 2 are raised and lowered under the action of the hydraulic device 3.

[0036] Support 1 is the basic structure of the entire tooling, typically made of high-strength steel, possessing sufficient stability and load-bearing capacity. Its main function is to provide a mounting platform for the lifting arm 2 and hydraulic system 3, ensuring stability during the lifting and rotation of aircraft tires and brake drums. The design of support 1 should take into account the size and weight of different models of aircraft tires and brake drums, as well as the requirements of the working environment, possessing adjustability and versatility.

[0037] The lifting arm 2 is one of the core components of the tooling, responsible for raising the aircraft tires and brake drums to the required height. The lifting arm 2 is typically made of high-strength alloy material, possessing excellent strength and rigidity. Its design should meet the following requirements:

[0038] (1) It can withstand the weight of the aircraft tires and brake drums, ensuring that it will not be deformed or damaged during the lifting process.

[0039] (2) It has adjustable length and angle to adapt to the size and lifting height requirements of tires and brake drums of different aircraft models.

[0040] (3) It is reliably connected to the hydraulic device and can smoothly carry out lifting and lowering operations.

[0041] This utility model provides a tooling for replacing tires and brake drums of civil aircraft. The hydraulic device 3 serves as the power source for the tooling, providing power for the lifting arm 2 to rise. By adjusting the height of the lifting arm 2, the tooling can adapt to tires and brake drums of different heights. Simultaneously, the distance between the two lifting arms 2 can be adjusted according to the model of the civil aircraft tires and brake drums, making it suitable for various aircraft models.

[0042] Optionally, the support frame 1 includes a base 101, a support column 102 and a crossbar. There are two support columns 102, which are set on the base 101. The side of the support column 102 is provided with a rail, and a crossbeam 103 is slidably set on the rail. The lifting arm 2 is slidably connected to the crossbeam 103, and the output end of the hydraulic device 3 is connected to the crossbeam 103.

[0043] Specifically, such as Figure 2 As shown, the bracket 1 includes a base 101, a support column 102 and a crossbar. The base 101 is in contact with the ground to provide a mounting base. The hydraulic device 3 is installed on the base 101. The support column 102 serves as a support structure for the lifting arm 2. In order to enable the hydraulic device 3 to control the lifting arm 2, a track needs to be set on the support column 102. The lifting arm 2 can move along the track under the action of the hydraulic device 3.

[0044] Optionally, the lifting arm 2 includes a connecting arm 201 and a lower support arm 202. The connecting arm 201 and the lower support arm 202 are fixed to form an L-shaped structure. In its natural state, the lower support arm 202 is perpendicular to the support column 102.

[0045] A slide rail 105 is provided on the outer side of the crossbeam 103, and a connecting block 203 is provided at the end of the connecting arm 201. The connecting block 203 is slidably mounted on the slide rail 105.

[0046] Specifically, such as Figure 3 , Figure 4As shown, the lifting arm 2 is an L-shaped structure formed by connecting the connecting arm 201 and the lower support arm 202. The two lifting arms 2 are installed on the crossbeam at intervals. In order to make the spacing between the lifting arms 2 adjustable to adapt to different models of civil aircraft tires and brake drums, a slide rail 105 needs to be set on the crossbeam 103. The connecting arm 201 is set on the slide rail 105 through the connecting block 203, and the connecting block 203 and the slide rail 105 are slidably connected.

[0047] Optionally, the connecting arm 201 and the connecting block 203 are connected by a pivot pin, so that the connecting arm 201 and the lower support arm 202 can move circumferentially around the connecting block 203.

[0048] The above settings allow the lifting arm 2 to be adjusted not only in height but also in spacing. However, in practical applications, it is sometimes necessary to adjust the angle of the lifting arm 2 as needed. By connecting the connecting arm 201 of the lifting arm 2 to the connecting block 203 via a pivot pin, the lifting arm 2 can perform circular motion within a certain angle range.

[0049] Optionally, the hydraulic device 3 includes a hydraulic cylinder 301, a connecting plate 302, and a connecting rod 303. The connecting rod 303 is connected to the hydraulic cylinder 301 through the connecting plate 302. The output end of the hydraulic cylinder 301 is connected to the crossbeam 103. The connecting rod 303 and the lifting arm 2 are located on both sides of the crossbeam 103.

[0050] In this embodiment, the hydraulic device 3 serves as the power source for the tooling, providing a powerful lifting force for the lifting arm 2. The hydraulic device 3 typically consists of components such as a hydraulic pump, hydraulic cylinders, and control valves. Its main functions include:

[0051] (1) Provide sufficient lift to ensure that the aircraft tires can be lifted easily.

[0052] (2) It has adjustable pressure and flow rate to meet the requirements of different lifting heights and speeds.

[0053] (3) It is simple and reliable to operate, and can achieve precise control and positioning.

[0054] like Figure 3 As shown, the connecting rod 303 is connected to the hydraulic cylinder 301 through the connecting plate 302. During operation, the output of the hydraulic cylinder 301 can be controlled by controlling the connecting rod 303, thereby controlling the height of the crossbeam 103.

[0055] Figure 5This embodiment provides a schematic diagram of the structure of one type of hydraulic cylinder, including a connecting piece 47, a dustproof ring 48, a cylinder head 49, a piston rod main sealing ring 50, a buffer ring 51, a sealing ring 52, a piston rod 53, an outer cylinder 54, a cylinder barrel 55, a first sealing ring 56, a bolt 57, a screw 58, a second sealing ring 59, a steel ball 60, a check ball 61, an elastic pin 62, a cylinder base 65, a tie rod 66, a third sealing ring 67, a support ring 68, a nut 69, a fourth sealing ring 70, a pressure relief valve 71, a valve stem 72, a second bolt 73, a fifth sealing ring 74, a positioning ball 75, a pressure ball 80, a threaded sleeve 81, and a valve seat 82. Since the structure and design of the hydraulic device are existing technologies, they will not be described in detail here. Except... Figure 5 The provided hydraulic device can also be other models of hydraulic equipment available on the market, such as the HY1430 model.

[0056] Optionally, the base 101 has a U-shaped structure, and the support column 102 is located on the side of the base 101 away from the opening end, and the support column 102 and the base 101 are an integrated structure.

[0057] In its natural state, the lifting arm 2 extends in the same direction as the opening of the base 101.

[0058] Optionally, the base 101 has multiple casters 104 at its bottom. The casters 104 are preferably casters with locking switches.

[0059] Optionally, as needed, fixing ropes or belts can be installed on the crossbeam 103 to enhance stability during transportation.

[0060] Example 1

[0061] This embodiment provides a product with an overall weight of approximately 100KG, external dimensions of 1100mm*1100mm*1400mm, and a volume of 2.0m³. 3 This tooling is used for replacing tires and brake drums on civil aircraft. It is made of Q355 low-alloy high-strength structural steel, and its technical parameters are as follows:

[0062] 1. The tooling is made of Q355 low alloy high strength structural steel.

[0063] (1) Yield strength: ≥355MPa. This means that the stress value at which the steel begins to produce obvious plastic deformation under stress is above 355MPa.

[0064] (2) Tensile strength: 470-630MPa. This indicates that the steel can withstand the maximum stress value within this range before breaking.

[0065] (3) Elongation: ≥21%. This reflects the plastic deformation capacity of steel. The higher the value, the better the plasticity.

[0066] 2. The expected parameters for the tooling are:

[0067] (1) A large, stable (non-tilting under load) base frame and tooling, weighing approximately 100KG, with external dimensions of 1100mm*1100mm*1400mm and a volume of 2.0m³. 3 .

[0068] (2) The tooling can bear a load of over 700kg and is equipped with interchangeable lifting devices capable of lifting tires and rims up to 250kg. During rim replacement, a rim support adapter can be installed to protect the rim from impact and ensure stability. The rim adapter bracket can bear a load of 170kg, and the adapter bracket itself weighs 4kg. It is also equipped with soft slings for rim lifting protection; the sling length is adjustable and the slings are made of carbon fiber woven material.

[0069] (3) Adjustable by sliding lifting arm, suitable for all machine wheel sizes (up to A380 model), tiltable support arm, which is safer by tilting.

[0070] (4) Universal wheels (with lock switch).

[0071] (5) Add a fixing belt or fixing rope.

[0072] (6) Equipped with a foot / manual hydraulic lifting arm, which can be finely adjusted up and down and left and right during disassembly and installation to quickly put the wheel hub and tire into place. The foot / manual hydraulic lifting arm can be folded up.

[0073] (iv) Tooling Verification

[0074] Due to the multi-angle lifting mechanism, the Department of Physics at Beijing University of Aeronautics and Astronautics will be invited to analyze the physical stress data for this equipment. The equipment will withstand 10-20% of the theoretical stress, and various alloy materials will be procured for repeated stress tests. Fatigue tests will also be conducted on the hydraulic system. Simultaneously, the 5721 Research Institute of AVIC will be invited to conduct experimental verification of the overall tooling structure to ensure service life and operational safety.

[0075] The working principle of the tooling provided by this utility model is as follows: First, the tooling is placed near the aircraft tire, and the position and height of the support are adjusted to adapt to the size and working conditions of the aircraft tire and brake drum. Then, by operating the hydraulic device, the hydraulic cylinder extends, pushing the lifting arm upward to raise the aircraft tire and brake drum to the required height. During the lifting process, the angle and length of the lifting arm can be adjusted as needed to ensure the stability of the tire and brake drum. After the tire and brake drum are raised to the appropriate height, they can be rotated using the rotating device for inspection, maintenance, or replacement. After the work is completed, the hydraulic device is operated to retract the hydraulic cylinder, the lifting arm descends, and the tire and brake drum are returned to their original position.

[0076] The lifting arm of this tooling is adjustable for tires of different sizes, allowing one device to be used by multiple machine models. The connecting arm can be adjusted at the angle after lifting, reducing the risk of tire tipping and accidents. It is reinforced by 10%-20% above the maximum force limit for the heaviest tire. It requires no electricity for charging, is primarily operated by the rear control lever, is foldable to save space, and has a low barrier to entry, requiring no training costs. This tooling fundamentally revolutionizes the scope and environment of application. Once a marketable product is developed, it will continuously reduce costs and increase efficiency.

[0077] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tooling for replacing tires and brake drums of civil aircraft, characterized in that: Includes a support frame, hydraulic system, and two lifting arms; The hydraulic device is fixed on the bracket, and the two lifting arms are spaced apart on the bracket. The distance between the two lifting arms is adjustable, and the lifting arms are raised and lowered under the action of the hydraulic device. The support includes a base, a support column, and a crossbar. There are two support columns, which are mounted on the base. A track is provided on the side of the support column, and a crossbar is slidably mounted on the track. The lifting arm is slidably connected to the crossbar, and the output end of the hydraulic device is connected to the crossbar. The lifting arm includes a connecting arm and a lower support arm. The connecting arm and the lower support arm are fixed to form an L-shaped structure. In its natural state, the lower support arm is perpendicular to the support column. The outer side of the crossbeam is provided with a slide rail, and the end of the connecting arm is provided with a connecting block, which is slidably mounted on the slide rail. The lifting arm can also be angle-adjusted. By connecting the connecting arm and the connecting block of the lifting arm with a pivot pin, the lifting arm can perform circular motion within a certain angle range.

2. The tooling for replacing tires and brake drums of civil aircraft according to claim 1, characterized in that: The hydraulic device includes a hydraulic cylinder, a connecting plate, and a connecting rod. The connecting rod is connected to the hydraulic cylinder through the connecting plate. The output end of the hydraulic cylinder is connected to the crossbeam. The connecting rod and the lifting arm are located on both sides of the crossbeam.

3. The tooling for replacing tires and brake drums of civil aircraft according to claim 2, characterized in that: The base has a U-shaped structure, and the support column is located on the side of the base away from the opening end, and the support column and the base are an integral structure; In its natural state, the lifting arm extends in the same direction as the opening of the base.

4. The tooling for replacing tires and brake drums of civil aircraft according to claim 2, characterized in that: The base is equipped with multiple rollers at its bottom.

Images