Aviation undercarriage tire and hub separation device

Abstract

The utility model relates to a tire and hub separating device for an aviation undercarriage, which belongs to the technical field of undercarriage wheel maintenance, is used for separating an aviation hub from a tire and comprises a rack, a pressure plate and a jack, the pressure plate and the jack are arranged on the rack, the jack is vertically and fixedly arranged at the top of the rack, and the pressure plate is arranged at the output end of the jack. The opening part of the pressure plate is vertically downward, the bottom of the pressure plate is fixedly connected with the output end of the jack, and the jack drives the pressure plate to move downwards so as to push the tire to be separated from the hub. The pressure plate applies uniform and stable force to the tire to deform the tire, smooth separation of the hub and the tire is realized, additional rotating torque is not generated in the tire release process, and the tire and hub separation device is prevented from being fixed, so that tire release operation can be performed on sites such as a parking apron or a hangar, and the tire release efficiency is improved. And the use convenience of the tire and hub separation device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of landing gear wheel maintenance technology, specifically relating to an aircraft landing gear tire hub separation device. Background Technology

[0002] Landing gear wheels are part of an aircraft's landing gear, used to support the aircraft's weight during landing and taxiing, and to assist in its movement on the ground. Landing gear wheels bear significant pressure and friction during takeoff, landing, and taxiing. To ensure smooth takeoff and landing, not only are routine inspections of the landing gear wheel tires necessary, but they must also be replaced when severely worn. When replacing landing gear wheel tires, the old tire must be removed from the rim. Landing gear wheel rims are often two-piece structures, and the aircraft tire forms a tight seal with the rim. Disassembly requires overcoming the strong bond between the tire and the rim. Separating the tire from the rim is generally done by using tools to pry the tire off piece by piece from the outside of the rim. However, while prying the tire, the condition of the rim must be constantly monitored to avoid deformation and damage.

[0003] Currently, when removing tires from landing gear wheels, various tools are used to separate the tire from the rim, such as screw-type tire pressers. These tools use a rotating screw to synchronously move a pressure plate, squeezing the tire off the rim to separate it from the rim, effectively preventing rim deformation and damage. However, this type of tire presser requires significant force from the pressure plate to separate the tire from the rim, resulting in a large rotational torque. This torque, in turn, acts on the tire presser itself, causing displacement and requiring it to be secured. However, this makes it difficult to remove tires on the tarmac or in hangars, reducing the ease of use of the tire presser. Summary of the Invention

[0004] In view of this, the present invention provides an aircraft landing gear tire hub separation device to overcome the shortcomings of the prior art. The present invention can realize the smooth separation of the hub and the tire, and will not generate additional rotational torque during the tire removal process, thus avoiding the need to fix the tire hub separation device and improving the ease of use of the tire hub separation device.

[0005] The technical solution of this utility model is: an aircraft landing gear tire hub separation device for separating aircraft hubs from tires. The separation device includes a frame and a pressure plate and a jack mounted on the frame. The jack is vertically fixed to the top of the frame with its output end facing downwards. The pressure plate is mounted on the output end of the jack with its opening facing downwards. The bottom of the pressure plate is fixedly connected to the output end of the jack. The hub and tire are placed directly below the pressure plate, and the edge of the opening of the pressure plate abuts against the tire on the outside of the hub. The jack drives the pressure plate to move downwards to push the tire away from the hub.

[0006] Preferably, the jack is a scissor jack.

[0007] Preferably, the side wall of the pressure plate is provided with multiple through holes at equal intervals around its circumference.

[0008] Preferably, it also includes: two crossbars, which are horizontally arranged directly below the pressure plate, and the two crossbars are parallel to each other and fixedly connected to the frame respectively.

[0009] Compared with the prior art, the present invention provides an aircraft landing gear tire-rim separation device that uses a pressure plate on the frame in conjunction with a jack. The jack drives the pressure plate to move vertically up and down, providing sufficient force for the pressure plate to squeeze the tire on the outside of the rim. This allows the pressure plate to apply a uniform and stable force to the tire, causing it to deform and smoothly separate from the rim. Furthermore, no additional rotational torque is generated during the tire removal process, eliminating the need to fix the tire-rim separation device. This allows for tire removal operations on the apron or in hangars, improving the ease of use of the tire-rim separation device. Attached Figure Description

[0010] Figure 1 This is a perspective view of the tire-hub separation device of this utility model;

[0011] Figure 2 This is an isometric drawing of the tire-hub separation device of this utility model;

[0012] Figure 3 This is a front view of the tire-hub separation device of this utility model;

[0013] Figure 4 This is a bottom view of the tire-hub separation device of this utility model. Detailed Implementation

[0014] This utility model provides an aircraft landing gear tire hub separation device, which is described below in conjunction with... Figure 1 and Figure 4 The present invention will be described in the structural schematic diagram.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 technical solution 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 this utility model.

[0016] Landing gear wheels are part of an aircraft's landing gear, used to support the aircraft's weight during landing and taxiing, and to assist in its movement on the ground. Landing gear wheels bear significant pressure and friction during takeoff, landing, and taxiing. To ensure smooth takeoff and landing, not only are routine inspections of the landing gear wheel tires necessary, but they must also be replaced when severely worn. For example, during maintenance of a CESSNA 172 aircraft, when replacing landing gear wheel tires, the old tires must be removed from the rims. Landing gear wheel rims are often two-piece structures, and the aircraft tire forms a tight seal with the rim. Disassembly requires overcoming the strong bond between the tire and the rim. When separating the tire from the rim, tools are typically used to pry the tire off piece by piece from the outside of the rim, gradually separating the tire from the rim. However, while prying the tire, the condition of the rim must be constantly monitored to avoid deformation and damage.

[0017] Currently, when removing tires from landing gear wheels, various tools are used to separate the tire from the rim, such as screw-type tire pressers. These tools use a rotating screw to synchronously move a pressure plate, squeezing the tire off the rim to separate it from the rim, effectively preventing rim deformation and damage. However, this type of tire presser requires significant force from the pressure plate to separate the tire from the rim, resulting in a large rotational torque. This torque, in turn, acts on the tire presser itself, causing displacement and requiring it to be secured. However, this makes it difficult to remove tires on the tarmac or in hangars, reducing the ease of use of the tire presser.

[0018] To address the aforementioned issues, this utility model provides an aircraft landing gear tire-rim separation device. This device utilizes a pressure plate on the frame in conjunction with a jack. The jack drives the pressure plate to move vertically up and down, providing sufficient force to compress the tire on the outside of the rim. This allows the pressure plate to apply a uniform and stable force to the tire, causing it to deform and smoothly separate from the rim. Furthermore, no additional rotational torque is generated during the tire removal process, eliminating the need to fix the device. This allows for tire removal operations on the apron or in hangars, improving the ease of use of the tire-rim separation device. This utility model's tire-rim separation device is effective, easy to use, and highly practical, making it worthy of promotion.

[0019] Figure 1 This is a perspective view of the tire separation device in this embodiment. Figure 4 This is a bottom view of the tire separation device in this embodiment, as shown. Figure 1 , Figure 4 As shown, an aircraft landing gear tire-hub separation device is disclosed to separate the aircraft wheel hub from the tire. The separation device includes a frame 1 and a pressure plate 2 and a jack 3 mounted on the frame 1. The jack 3 is vertically fixed to the top of the frame 1 with its output end facing downward. The pressure plate 2 is mounted on the output end of the jack 3 with its opening facing downward. The bottom of the pressure plate 2 is fixedly connected to the output end of the jack 3. The wheel hub and the tire are placed directly below the pressure plate 2. The edge of the opening of the pressure plate 2 abuts against the tire on the outside of the wheel hub. The jack 3 drives the pressure plate 2 to move downward to push the tire away from the wheel hub.

[0020] Figure 3 This is a front view of the tire separation device in this embodiment, as shown. Figure 3 As shown in the figure, in this embodiment of the aircraft landing gear tire-rim separation device, the jack 3 on the frame 1 can drive the pressure plate 2 to move up and down, placing the rim and tire to be separated directly below the pressure plate 2. The jack 3 drives the pressure plate 2 to move downward, and the edge of the pressure plate 2 abuts against the top of the tire on the outside of the rim. When the jack 3 drives the pressure plate 2 to move downward and squeeze the tire, it can provide sufficient force to the pressure plate 2, so that the pressure plate applies a uniform and stable force to the tire, causing it to deform. The tire deforms and moves downward relative to the rim, while the rim gradually extends deeper into the pressure plate 2 relative to the tire, thereby achieving smooth separation of the rim and tire. At the same time, no additional rotational torque is generated during the entire tire removal process, and the tire-rim separation device does not shift. The tire-rim separation device in this embodiment does not require additional force from personnel to resist it and keep it stable or fixed, thus enabling tire removal operations to be carried out on-site at the apron or hangar, improving the ease of use of the tire-rim separation device.

[0021] In this embodiment, when performing tire removal operations on tires and rims of different sizes, pressure plates 2 of different sizes can be selected according to the size of the tires and rims. The inner diameter of the pressure plate 2 is larger than the outer diameter of the rim and smaller than the outer diameter of the tire, so that the pressure plate 2 can stably squeeze the tire to deform it, thereby achieving smooth separation of the rim and the tire.

[0022] In the above embodiments, when selecting different models of pressure plates 2 and output torque jacks 3, the frame can be set according to the dimensions of the wheel hub, tire, pressure plate, and jack 3 to facilitate the normal use of the tire separation device. As a further optimization, in this embodiment, the jack 3 is a scissor jack.

[0023] In this embodiment, the aircraft landing gear tire hub separation device provides power to the pressure plate using a scissor jack. The scissor jack utilizes the lever principle to greatly reduce labor intensity and further improve the ease of use of the tire hub separation device. As a further optimization, in this embodiment, multiple through holes are evenly spaced around the side wall of the pressure plate 2.

[0024] The aircraft landing gear tire-hub separation device in this embodiment, by opening multiple through holes on the side wall of the pressure plate 2, not only reduces the weight of the entire separation device and facilitates its movement, but also, the through holes, which are symmetrically distributed around the pressure plate, can be used as observation holes. During the tire-hub separation process, the condition of the hub can be observed at all times, preventing the hub from deforming under stress and increasing the safety and reliability of aircraft maintenance.

[0025] Figure 2 This is an isometric view of the tire separation device in this embodiment, as shown below. Figure 2 As shown, as a further optimization, this embodiment also includes two crossbars 11, which are horizontally arranged directly below the pressure plate 2. The two crossbars 11 are parallel to each other and are fixedly connected to the frame 1 respectively.

[0026] In this embodiment, the two crossbars 11 can support the tire and rim to be separated, and the tray 2 improves its stability when the tire and rim are squeezed apart.

[0027] The above-disclosed embodiments are merely preferred embodiments of the present utility model. However, the embodiments of the present utility model are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An aircraft landing gear tire-hub separation device for separating the aircraft wheel hub from the tire, characterized in that, The separation device includes: The frame (1) and the pressure plate (2) and jack (3) are mounted on the frame (1). The jack (3) is vertically fixed on the top of the frame (1) with the output end of the jack (3) facing downward. The pressure plate (2) is mounted on the output end of the jack (3) with the opening of the pressure plate (2) facing downward. The bottom of the pressure plate (2) is fixedly connected to the output end of the jack (3). The wheel hub and the tire are placed directly below the pressure plate (2). The edge of the opening of the pressure plate (2) abuts against the tire on the outside of the wheel hub. The jack (3) drives the pressure plate (2) to move downward to push the tire away from the wheel hub.

2. An aircraft landing gear wheel and hub separation device according to claim 1, characterised in that, The jack (3) is a scissor jack.

3. An aircraft landing gear wheel and hub separation device according to claim 1, wherein, The pressure plate (2) has multiple through holes that are equally spaced around its side wall.

4. An aircraft landing gear wheel and hub separation device as claimed in claim 1, wherein, Also includes: Two crossbars (11) are horizontally positioned directly below the pressure plate (2). The two crossbars (11) are parallel to each other and are fixedly connected to the frame (1).

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