Aircraft ground tow dolly

Abstract

This application relates to the field of aircraft technology and discloses an aircraft ground towing trailer. The aircraft ground towing trailer of this application is used for lifting and towing aircraft, including a towing unit and a frame unit that can move horizontally and vertically through the towing unit. The frame unit can enter and exit the area under the aircraft under the action of the towing unit. Multiple extension mechanisms on both sides of the frame unit can move away from or towards the frame unit and can rotate around the frame unit to connect the extension mechanisms to the aircraft's landing gear. This aircraft ground towing trailer of this application can easily enter the area under the aircraft, and through retractable and rotatable components, align the fixing device with the aircraft's landing gear to complete the towing operation, saving time and effort.

Description

Technical Field

[0001] This application relates to the field of aircraft technology, and more particularly to an aircraft ground traction trailer. Background Technology

[0002] The existing aircraft towing trailers need to be pushed under the aircraft. Usually, the multiple fixing devices of the trailer cannot be aligned with the fixing position of the aircraft at the same time. The position of the trailer needs to be adjusted multiple times to make its fixing devices aligned with the fixing position of the aircraft. Because the trailer is inconvenient to move under the aircraft, it causes a lot of trouble. Summary of the Invention

[0003] The purpose of this application is to provide a ground towing trailer for an aircraft. This ground towing trailer can easily enter the area below the aircraft and use a retractable and rotatable component to align the fixing device with the aircraft landing gear to complete the towing work of the aircraft, saving time and effort.

[0004] To address the aforementioned technical problems, this application provides a ground towing trailer for lifting and towing aircraft, comprising: a towing unit and a frame unit that can move horizontally and vertically through the towing unit; the frame unit can enter and exit the area below the aircraft under the action of the towing unit, and multiple extension mechanisms on both sides of the frame unit can move away from or towards the frame unit, and can rotate around the frame unit to align and connect the extension mechanisms with the landing gear of the aircraft.

[0005] Optionally, multiple extension mechanisms on both sides of the frame portion can move away from or close to the frame portion, and can rotate horizontally around the frame portion to fit the extension mechanisms onto the landing gear of the aircraft to form a fixed connection.

[0006] Optionally, the frame portion consists of a frame main body and the plurality of extension mechanisms. The extension mechanisms can move away from or near the frame main body and can rotate horizontally around the frame main body to mount the extension mechanisms onto the landing gear of the aircraft to form a fixed connection.

[0007] Optionally, the extension mechanism includes a telescopic part and a connecting device part. The telescopic part can move away from or towards the frame part, and the connecting device part is used to support the landing gear connected to the aircraft.

[0008] Optionally, the frame body has an inner cavity for accommodating the telescopic part, which can enter or extend into the inner cavity of the frame body.

[0009] Optionally, the frame body includes a threaded hole communicating with the inner cavity, and a threaded part mating with the threaded hole can be rotated into or out of the inner cavity to abut against the telescopic part.

[0010] Optionally, the telescopic part includes a first telescopic part and a second telescopic part, wherein the first telescopic part is rotatable horizontally relative to the second telescopic part.

[0011] Optionally, the connecting device includes a gripper and a sleeve that are connected to each other. The gripper extends through the telescopic part, and the sleeve is arranged around the landing gear of the aircraft.

[0012] Optionally, the gripper and the sleeve are detachably connected.

[0013] Optionally, the gripper includes a clamping part and a through-connecting part. The gripper has multiple protruding hooks on the inner side of the opposite gripper. The sleeve part has multiple through holes on both sides that correspond one-to-one with the protruding hooks. The clamping part can clamp the two sides of the sleeve part and insert the protruding hooks into the corresponding through holes to form a fixed connection.

[0014] The ground towing trailer for the aircraft described in this application can easily enter the area below the aircraft. By using retractable and rotatable components, the fixing device is aligned with and connected to the aircraft's landing gear to complete the towing work, saving time and effort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the aircraft ground towing trailer before it enters the area below the aircraft, according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram showing the structure of the aircraft after the ground towing trailer of the aircraft enters the area below the aircraft, according to an embodiment of this application.

[0017] Figure 3 Displayed as Figure 2 A magnified view of a portion of position A in the middle;

[0018] Figure 4 The diagram shown is a structural schematic of the ground towing trailer for an aircraft according to an embodiment of this application.

[0019] Figure 5 The image shown is a top view of the ground towing trailer for the aircraft according to an embodiment of this application;

[0020] Figure 6 Displayed as Figure 4 A magnified view of a portion of position B in the middle;

[0021] Figure 7 Displayed as Figure 4 A magnified view of the area at position C in the middle;

[0022] Figure 8 Displayed as Figure 4 A magnified view of another angle from position B in the middle;

[0023] Figure 9 The diagram shows the separated state of the gripper and the sleeve in an embodiment of this application. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0025] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0026] For the purpose of clearly describing this application, devices that are not relevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0027] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0028] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0029] Although the terms first, second, etc., are used in some instances herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, descriptions such as first interface and second interface, etc. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0030] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this application. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in the specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0031] Terms such as "below" and "above" indicating relative space are used to more easily explain the relationship of one device relative to another in the accompanying drawings. These terms refer not only to their meaning as shown in the drawings but also to other meanings or operations of the device in use. For example, if the device in the drawings is flipped, a device previously described as "below" another device may now be described as "above" another device. Therefore, the exemplary term "below" encompasses both above and below. The device may be rotated 90° or other angles, and the terms representing relative space are interpreted accordingly.

[0032] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the content of this present application, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0033] Embodiments of this application are described below with reference to the accompanying drawings, such as Figures 1 to 3As shown, this application embodiment provides an aircraft ground towing trailer 100, including: a towing part 1 and a frame part 2. The frame part 2 can move horizontally and vertically through the towing part 1. The frame part 2 can enter and exit the area below the aircraft 200 under the action of the towing part 1. Multiple extension mechanisms 21 on both sides of the frame part 2 can move away from or close to the aircraft 200, and can rotate around the frame part 2 to align and connect the extension mechanisms 21 with the fixed position of the aircraft 200.

[0034] Specifically, such as Figure 4 and Figure 5 As shown, the frame section 2 includes a frame main body 20 and multiple extension mechanisms 21, with four extension mechanisms 21 symmetrically arranged on both sides of the frame main body 20. Before the frame section 2 enters the area below the aircraft 200, the extension mechanisms 21 are in a retracted state to prevent interference between the frame section 2 and the landing gear 201 of the aircraft 200. After the frame section 2 enters the area below the aircraft 200, the extension mechanisms 21 can move away from the frame main body 20 and towards the landing gear 201 until they are aligned with the landing gear 201. Simultaneously, the extension mechanisms 21 can rotate around the frame main body 20, allowing for fine-tuning of their position to align and connect with the landing gear 201 of the aircraft 200.

[0035] Similarly, when it is necessary to remove the frame portion 2 from the area below the aircraft 200, the extension mechanism 21 can be retracted close to the frame body portion 20. In one embodiment, the extension mechanism 21 is not limited to the four shown in the figures, but may be six or other numbers. In one embodiment, the extension mechanism 21 may also be aligned and connected to other possible fixed positions of the aircraft 200, thereby raising the aircraft 200.

[0036] like Figure 6 As shown, the extension mechanism 21 includes a telescopic part 210 and a connecting device part 211. The telescopic part 210 can move away from the frame body 20 and toward the aircraft 200, and can also rotate around the frame body 20. The connecting device part 211 is used to support the landing gear 201 of the aircraft 200.

[0037] Specifically, such as Figure 7As shown, the frame body 20 has an inner cavity (not shown) that accommodates the telescopic part 210. The telescopic part 210 can enter or extend into the inner cavity of the frame body 20. The frame body 20 includes a threaded hole communicating with the inner cavity. A threaded member 220 mating with the threaded hole can be rotated into the inner cavity to hold the telescopic part 210, thereby fixing the telescopic part 210; or, the threaded member can be rotated out of the inner cavity to release the telescopic part 210, thereby allowing the telescopic part 210 to move. The telescopic part 210 includes a first telescopic part 210a and a second telescopic part 210b. The second telescopic part 210b can rotate horizontally relative to the first telescopic part 210a, thereby allowing for fine-tuning of the angle of the second telescopic part 210b to align and fix the landing gear 201 without moving the frame body 20.

[0038] Furthermore, such as Figure 8 and Figure 9 As shown, the connecting device 211 includes a gripper 211a and a sleeve 211b connected to each other, and the gripper 211a and the sleeve 211b are detachably connected. The sleeve 211b can be pre-installed around the landing gear 201 of the aircraft 200. The gripper 211a includes a clamping part 211aa and a through-connecting part 211ab connected to each other. The clamping part 211aa includes a pair of grippers that can be clamped relatively close to each other. The inner side of the opposing grippers is provided with a plurality of protruding hooks 212a. The upper part of both sides of the sleeve 211b includes a plurality of through holes 212b that correspond one-to-one with the protruding hooks 212a. The clamping part 211aa can clamp both sides of the sleeve 211b and insert the protruding hooks 212a into the corresponding through holes 212b, thereby forming a fixed connection. In practice, the ground is rarely perfectly flat, often resulting in a lack of effective clearance between the landing gear 201 and the ground, making it difficult for the connecting device 211 to grip the landing gear 201. In this embodiment, the connection position between the gripper 211a and the sleeve 211b is far from the ground, allowing the gripper 211a to be more easily installed onto the sleeve 211b from both sides, regardless of whether there is a clearance between the landing gear 201 and the ground.

[0039] The through-connector 211ab passes through and connects to the telescopic part 210. The telescopic part 210 has a nut (not shown in the figure) on the side away from the gripper 211a. By rotating the nut, the height of the through-connector 211ab can be adjusted, which in turn adjusts the height of the gripper 211a, allowing it to move up and down to align with the connecting sleeve 211b. Subsequently, the frame part 2, along with multiple extension mechanisms 21, is lifted by the traction unit 1. Simultaneously, the support wheels at the rear of the towing trailer 100 can also be raised accordingly, thus towing the transport aircraft 200.

[0040] Furthermore, such as Figure 8As shown, each extension mechanism 21 is also equipped with a pressure measuring device 22. The connecting device part 211 is located below the telescopic part 210, passing through the telescopic part 210 and connecting to the pressure measuring device 22. The pressure measuring device 22 is located on the side of the telescopic part 210 away from the gripper part 211a. When the extension mechanism 21 is connected to the landing gear 201, the extension mechanism 21 uses the pressure measuring device 22 to measure the pressure of the landing gear 201. There are four pressure measuring devices 22, which are symmetrically arranged on both sides of the frame part 2. The four pressure measuring devices 22 are connected to the control system and are used to calculate the center of gravity position of the aircraft based on the pressure values ​​of the four pressure measuring devices 22, thereby determining whether it meets the flight conditions, without the need for a lot of manual labor to move the aircraft to the electronic scale for weighing.

[0041] The ground towing trailer for the aircraft described in this application can easily enter the area below the aircraft. By using retractable and rotatable components, the fixing device is aligned with and connected to the aircraft's landing gear to complete the towing work, saving time and effort.

[0042] The above embodiments are merely illustrative of the principles and effects of this application. Any person skilled in the art can modify or alter the above embodiments without departing from the purpose of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the purpose disclosed in this application should still be covered by the claims of this application.

Claims

1. An aircraft ground towing dolly for lifting and towing an aircraft (200), characterized in that include: The traction unit (1) and the frame unit (2) can move horizontally and vertically through the traction unit (1); the frame unit (2) can enter and exit the area below the aircraft (200) under the action of the traction unit (1), and multiple extension mechanisms (21) on both sides of the frame unit (2) can move away from or close to the aircraft (200), and can rotate around the frame unit (2) to align and connect the extension mechanism (21) with the fixed position of the aircraft (200).

2. The aircraft ground towing trailer according to claim 1, characterized in that, Multiple extension mechanisms (21) on both sides of the frame (2) can move away from or close to the landing gear (201) of the aircraft (200), and can rotate horizontally around the frame (2) to fit the extension mechanism (21) onto the landing gear (201) of the aircraft (200) to form a fixed connection.

3. The aircraft ground towing trailer according to claim 1, characterized in that, The frame part (2) is composed of the frame main body part (20) and the plurality of extension mechanisms (21). The extension mechanism (21) can move away from or close to the frame main body part (20) and can rotate horizontally around the frame main body part (20) to fit the extension mechanism (21) onto the landing gear (201) of the aircraft (200) to form a fixed connection.

4. The aircraft ground towing trailer according to claim 1, characterized in that, The extension mechanism (21) includes a telescopic part (210) and a connecting device part (211). The telescopic part (210) can move away from or closer to the frame part (2). The connecting device part (211) is used to support the landing gear (201) that connects to the aircraft (200).

5. The aircraft ground towing trailer according to claim 4, characterized in that, The frame body (20) has an inner cavity for accommodating the telescopic part (210), which can enter or extend into the inner cavity of the frame body (20).

6. The aircraft ground towing trailer according to claim 5, characterized in that, The main body of the frame (20) includes a threaded hole communicating with the inner cavity, and a threaded part (220) mating with the threaded hole can be rotated in or out of the inner cavity to abut or release the telescopic part (210).

7. The aircraft ground towing trailer according to claim 4, characterized in that, The telescopic part (210) includes a first telescopic part (210a) and a second telescopic part (210b), wherein the first telescopic part (210a) is rotatable horizontally relative to the second telescopic part (210b).

8. The aircraft ground towing trailer according to claim 4, characterized in that, The connecting device (211) includes a gripper (211a) and a sleeve (211b) connected to each other. The gripper (211a) is connected through the telescopic part (210), and the sleeve (211b) is arranged around the landing gear (201) of the aircraft (200).

9. The aircraft ground towing trailer according to claim 8, characterized in that, The gripper (211a) and the sleeve (211b) are detachably connected.

10. The aircraft ground towing trailer according to claim 8, characterized in that, The gripper (211a) includes a clamping part (211aa) and a through connection part (211ab). The clamping part (211aa) has multiple protruding hooks (212a) on the inner side of the gripper opposite to each other. The sleeve part (211b) has multiple through holes (212b) on both sides that correspond one-to-one with the protruding hooks (212a). The clamping part (211aa) can clamp the two sides of the sleeve part (211b) and insert the protruding hooks (212a) into the corresponding through holes (212b) to form a fixed connection.

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