Aircraft towing dolly

Abstract

The application relates to the field of aircraft technology and discloses an aircraft towing trailer. The aircraft towing trailer for lifting and towing an aircraft comprises a towing part, a frame part and a plurality of connecting devices; the frame part is connected with the towing part and can move horizontally and up and down through the towing part to enter and exit an area below the aircraft; and the plurality of connecting devices are symmetrically arranged on both sides of the frame part and can move horizontally and in the height direction to approach and connect landing gears of the aircraft. The aircraft towing trailer can conveniently enter the area below the aircraft, especially in the case that the ground area is uneven, the movable connecting devices are used to realize quick disassembly and assembly with the landing gears of the aircraft, and the towing work of the aircraft is completed.

Description

Technical Field

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

[0002] The existing aircraft towing trailers need to be pushed under the aircraft. When the ground where the aircraft is located is not flat enough, the landing gear of the aircraft is at different heights from the ground, and the towing trailer cannot easily align and connect its multiple fixing devices to the aircraft, which causes a lot of trouble. Utility Model Content

[0003] The purpose of this application is to provide an aircraft towing trailer. This aircraft towing trailer can easily enter the area below the aircraft, especially in situations where the ground is uneven. It can quickly detach and detach from the aircraft landing gear through a movable connecting device to complete the towing work of the aircraft.

[0004] To address the aforementioned technical problems, this application provides an aircraft towing trailer for lifting and towing an aircraft, comprising: a towing unit, a frame unit, and multiple connecting devices; the frame unit is connected to the towing unit and can move horizontally and vertically through the towing unit to enter and exit the area below the aircraft; the multiple connecting devices are symmetrically arranged on both sides of the frame unit and can move horizontally and vertically to approach and connect to the landing gear of the aircraft.

[0005] Optionally, the connecting device includes a telescopic part and a hook connecting part. The hook connecting part includes a hook and a clamp part that are connected to each other. The hook is connected to the telescopic part and configured to move in the height direction. The clamp part is arranged around the landing gear of the aircraft.

[0006] Optionally, the hook is detachably mounted on the clamp and forms a connection.

[0007] Optionally, the clamp portion includes a load-bearing portion and a sleeve portion, wherein the load-bearing portion and the sleeve portion are combined to surround the landing gear.

[0008] Optionally, the load-bearing part includes a pair of hooks and a hook base plate, the pair of hooks being respectively connected to the hook base plate, and the hook being configured to be hung on the pair of hooks and form a connection.

[0009] Optionally, the hook is a T-shaped hook, which includes a T-shaped part and a threaded rod part. The T-shaped part is configured to be hung on the pair of hook parts. The threaded rod part passes through the telescopic part and has a nut part that engages with the threaded rod part on the side of the telescopic part away from the T-shaped part, so as to raise or lower the clamp part by rotating the nut part.

[0010] Optionally, the frame portion has an inner cavity for accommodating the telescopic portion, the telescopic portion being able to enter or extend into the inner cavity of the frame portion, the frame portion having a threaded hole communicating with the inner cavity, and a threaded part mating with the threaded hole being able to rotate in or out of the inner cavity to abut or release the telescopic portion.

[0011] Optionally, the telescopic part can move horizontally away from or towards the landing gear of the aircraft, and can rotate relative to the frame part to adjust the position of the hook connection part so that it can be looped around the landing gear of the aircraft.

[0012] Optionally, the telescopic part includes a first telescopic part and a second telescopic part. The first telescopic part can move horizontally away from or closer to the frame part, and the second telescopic part can rotate horizontally relative to the first telescopic part to adjust the position of the hook connection part so that it can be looped onto the landing gear of the aircraft.

[0013] Optionally, the second telescopic part is connected to the hook connection part, and the length of the second telescopic part is one-fifth of the length of the first telescopic part.

[0014] The aircraft towing trailer of this application can easily enter the area below the aircraft, especially in situations where the ground is uneven. It can quickly detach and detach from the aircraft landing gear through a movable connecting device to complete the towing work of the aircraft. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram showing the structure of the aircraft towing trailer after it has entered the position 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 an aircraft towing trailer according to an embodiment of this application.

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

[0020] Figure 6 Displayed as Figure 4 A magnified view of the area at position B in the middle. Detailed Implementation

[0021] The following embodiments further illustrate the technical solutions of this application. It should be understood that the specific embodiments described herein are merely for explaining this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all of them.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The term "aircraft" is defined as an air transport system of any size having at least one lift propeller as its propulsion source. The term "aircraft" can include both "manned" and "unmanned" air transport systems. A manned aircraft can mean an air transport system carrying one or more human passengers, none of whom have control over the aircraft. A manned aircraft can also mean an air transport system carrying one or more human passengers, some of whom, or one of whom, has partial or full control over the aircraft. An unmanned aircraft can mean an air transport system that does not carry any human passengers and flies autonomously or is remotely controlled by someone at a distance.

[0025] 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 towing trailer 100, which is used to tow and lift an aircraft. The towing trailer 100 includes: a towing part 1, a frame part 2, and a plurality of connecting devices 21. The frame part 2 is connected to the towing part 1. The frame part 2 can move horizontally and vertically through the towing part 1 to enter and exit the area below the aircraft 200. The plurality of connecting devices 21 are symmetrically arranged on both sides of the frame part 2 and can move horizontally and vertically to approach and connect to the landing gear 201 of the aircraft 200.

[0026] Specifically, such as Figure 4 and Figure 5 As shown, four connecting devices 21 are symmetrically arranged on both sides of the frame portion 2. The connecting devices 21 are in a retracted state before the frame portion 2 enters the area below the aircraft 200, so that the connecting devices 21 do not interfere with the landing gear 201. When the frame portion 2 enters the area below the aircraft 200, the four connecting devices 21 on both sides can move horizontally and vertically to approach and connect with the landing gear 201 of the aircraft 200, thereby aligning and connecting the connecting devices 21 with the landing gear 201. Similarly, when it is necessary to remove the frame portion 2 from the area below the aircraft 200, the connecting devices 21 can be retracted and brought closer to the frame portion 2.

[0027] In one embodiment, the connecting device 21 is not limited to the four shown in the figures, but may be six or other numbers. In one embodiment, the connecting device 21 may also be aligned and connected to other locations of the aircraft 200 to lift the aircraft 200. In one embodiment, the landing gear 201 of the aircraft 200 is not limited to the above-described type.

[0028] like Figure 3 As shown, the connecting device 21 includes a telescopic part 210 and a hook connecting part 211. The telescopic part 210 can move away from the frame part 2 and toward the aircraft 200, and can also rotate relative to the frame part 2. The hook connecting part 211 is used to connect to and lift the landing gear 201 of the aircraft 200.

[0029] Specifically, such as Figure 3 As shown, the hook connection 211 includes a hook 211a and a clamp 211b connected to each other. The hook 211a passes through and connects to the telescopic part 210 and is configured to move in the height direction. The clamp 211b can be pre-looped onto the landing gear 201 of the aircraft 200. In one embodiment, the hook 211a is detachably mounted on the clamp 211b and forms a connection.

[0030] Further, the telescopic section 210 includes a first telescopic section 210a and a second telescopic section 210b, which are horizontally rotatably connected. In one embodiment, one end of the first telescopic section 210a includes an extension arm, and the second telescopic section 210b overlaps the extension arm and can rotate relative to the first telescopic section 210a. Of course, other connection methods are also possible, and this application embodiment does not specifically limit the connection. The second telescopic section 210b can rotate horizontally relative to the first telescopic section 210a, thereby adjusting the angle of the second telescopic section 210b so that the hook 211a can be aligned with and connected to the clamp portion 211b on the landing gear 201 without moving the frame portion 2.

[0031] The second telescopic portion 210b is much smaller than the length of the first telescopic portion 210a, thereby reducing the risk of breakage at the connection between the second telescopic portion 210b and the first telescopic portion 210a. In one embodiment, the length of the second telescopic portion 210b is one-fifth the length of the first telescopic portion 210a, thereby reducing the risk of breakage of the second telescopic portion 210b. In another embodiment, the length of the second telescopic portion 210b is no more than 10 cm, thereby reducing the risk of breakage of the second telescopic portion 210b.

[0032] Furthermore, such as Figure 6 As shown, the frame portion 2 has an inner cavity for accommodating the telescopic portion 210. The telescopic portion 210 can enter or extend into the inner cavity of the frame portion 2. The frame portion 2 is provided with a threaded hole communicating with the inner cavity. A threaded member 220 that mates with the threaded hole can be rotated into the inner cavity to hold the telescopic portion 210. When it is necessary to release the telescopic portion 210, the threaded member can be rotated out of the inner cavity to release the telescopic portion 210.

[0033] Furthermore, such as Figure 6 As shown, the clamp portion 211b includes a load-bearing portion 212b and a sleeve portion 213b, which are combined together to surround the landing gear 201. Specifically, the load-bearing portion 212b includes a pair of hook portions 214b and a hook base plate 215b. The pair of hook portions 214b are both connected to the surface of the hook base plate 215b and arranged side by side. Preferably, the pair of hook portions 214b and the hook base plate 215b are integrally formed. The sleeve portion 213b is fitted and wrapped around the landing gear 201, thereby increasing its contact area with the landing gear, improving the stability of the aircraft during transportation, and reducing the probability of landing gear damage.

[0034] The hook 211a is configured to be attached to and connected to a pair of hook portions 214b. In one embodiment, the hook 211a is a T-shaped hook, comprising an interconnected T-shaped portion 212a and a threaded shank portion 213a. The T-shaped portion 212a is configured to be attached to the pair of hook portions 214b. The threaded shank portion 213a passes through the second telescopic portion 210b, and a nut portion 214a is provided on the side of the second telescopic portion 210b away from the T-shaped portion 212a. The nut portion 214a is threadedly connected to the threaded shank portion 213a, thereby raising or lowering the clamp portion 211b by rotating the nut portion 214a.

[0035] In this embodiment, the clamp portion 211b can be pre-mounted around the landing gear 201. The hook 211a is moved above the clamp portion 211b by the telescopic portion 210. Then, the nut portion 214a is rotated to lower the hook 211a, while simultaneously the second telescopic portion 210b is rotated horizontally back and forth to engage the T-shaped portion 212a with the hook of the hook portion 214b. The nut portion 214a is then used to raise the hook 211a, thus attaching the hook 211a to a pair of hook portions 214b and forming a connection. Similarly, when disconnection is required, the nut portion 214a is rotated in conjunction with the second telescopic portion 210b to disengage the T-shaped portion 212a from the hook portion 214b, thereby achieving quick assembly and disassembly of the hook 211a and the clamp portion 211b. Subsequently, the frame 2, along with multiple connecting devices 21, is lifted by the traction unit 1, and the support mechanism 3 at the rear of the towing trailer 100 can also be lifted accordingly, thereby towing and transporting the aircraft 200.

[0036] In one embodiment, such as Figure 4 As shown, the rear of the towing trailer 100 is equipped with two support mechanisms 3. Each support mechanism 3 includes an actuating component and a support wheel. The actuating component can drive the support wheel to move up and down with the towing unit 1, raising or lowering it. The actuating component includes an electric hydraulic pump and a hydraulic rod. The electric hydraulic pump receives instructions from the control device built into the towing unit 1 and adjusts the corresponding height, thereby ensuring that the frame unit 2 remains horizontal even on uneven road surfaces.

[0037] like Figure 4 As shown, this embodiment of the application also includes a level measuring device 4. A control device (not shown) is installed inside the traction unit 1. The traction unit 1 moves up and down, creating a height difference between the front and rear ends of the towing trailer 100. The support mechanism 3 adjusts its height accordingly based on the level measuring device 4 to keep the frame part 2 level. Specifically, the electric hydraulic pump of the actuating component of the support mechanism 3 receives instructions from the control device inside the traction unit 1 to adjust the height accordingly. This ensures that the frame part 2 remains level even on uneven surfaces. In this embodiment, the rear support mechanism is electrically driven and can move forward and backward and up and down with the traction unit to complete the towing work of the aircraft.

[0038] In the embodiments of this application, the towed aircraft are all large-volume aircraft, usually more than 5 meters in length. At this time, due to the long distance between the front and rear, it is not possible to use the support mechanism 3 driven by the conventional direct linkage structure, but only the support mechanism 3 controlled by the electric hydraulic pump and hydraulic rod can be used.

[0039] In practice, the ground environment for aircraft parking can be quite complex, and there is often insufficient clearance between the landing gear 201 and the ground to use conventional gripper structures for hoisting the landing gear 201. In this embodiment, the connection position between the hook 211a and the clamp 211b is far from the ground, allowing the hook 211a to be quickly and easily connected to the clamp 211b, unaffected by complex ground conditions.

[0040] The aircraft towing trailer of this application can easily enter the area below the aircraft, especially in situations where the ground is uneven. It supports and connects to the aircraft's landing gear through a movable connecting device to complete the towing work of the aircraft.

[0041] In some embodiments, each connecting device 21 may also be equipped with a pressure measuring device (not shown in the figure). The pressure measuring device may be located between the second telescopic part 210b and the nut part 214a, with the threaded rod part 213a passing through the second telescopic part 210b and the pressure measuring device. When the connecting device 21 is connected to the landing gear 201, the connecting device 21 uses the pressure measuring device to measure the pressure of the landing gear 201. Each connecting device 21 is provided with a pressure measuring device 22, which is 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, thereby determining whether it meets the flight conditions, without the need for a large amount of manual labor to move the aircraft to the electronic scale for weighing.

[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 towing trailer for lifting and towing an aircraft (200), characterized in that, include: The system comprises a traction unit (1), a frame unit (2), and multiple connecting devices (21); the frame unit (2) is connected to the traction unit (1) and can move horizontally and vertically via the traction unit (1) to enter and exit the area below the aircraft (200); the multiple connecting devices (21) are symmetrically arranged on both sides of the frame unit (2), each connecting device (21) including a telescopic part (210) and a hook connecting part (211), the hook connecting part (211) including a hook (211a) and a clamp part (211b) connected to each other, the clamp part (211b) including a pair of hook parts (214b), the hook... (211a) is a T-shaped hook and includes a T-shaped part (212a) and a threaded rod part (213a). The T-shaped part (212a) is configured to be mounted on the pair of hook parts (214b). The threaded rod part (213a) passes through the telescopic part (210) and has a nut part (214a) on the side of the telescopic part (210) away from the T-shaped part (212a) so as to raise or lower the clamp part (211b) by rotating the nut part (214a). Each of the connecting devices (21) can move horizontally and vertically to approach and connect to the landing gear (201) of the aircraft (200).

2. The aircraft towing trailer according to claim 1, characterized in that, The hook (211a) is detachably mounted on the clamp (211b) and forms a connection.

3. The aircraft towing trailer according to claim 1, characterized in that, The clamping part (211b) includes a load-bearing part (212b) and a sleeve part (213b), which together surround the landing gear (201).

4. The aircraft towing trailer according to claim 3, characterized in that, The load-bearing part (212b) includes a pair of hook parts (214b) and a hook base plate (215b), the pair of hook parts (214b) are respectively connected to the hook base plate (215b), and the hook (211a) is configured to be hung on the pair of hook parts (214b) and form a connection.

5. The aircraft towing trailer according to claim 1, characterized in that, The frame part (2) has an inner cavity for accommodating the telescopic part (210). The telescopic part (210) can enter or extend into the inner cavity of the frame part (2). The frame part (2) is provided with a threaded hole communicating with the inner cavity. A threaded part (220) mating with the threaded hole can rotate in or out of the inner cavity to hold or release the telescopic part (210).

6. The aircraft towing trailer according to claim 1, characterized in that, The telescopic part (210) can move horizontally away from or near the landing gear (201) of the aircraft (200), and can rotate relative to the frame part (2) to adjust the position of the hook connection part (211) so that it can be looped around the landing gear (201) of the aircraft (200).

7. The aircraft towing trailer according to claim 6, characterized in that, The telescopic part (210) includes a first telescopic part (210a) and a second telescopic part (210b). The first telescopic part (210a) can move horizontally away from or closer to the frame part (2). The second telescopic part (210b) can rotate horizontally relative to the first telescopic part (210a) to adjust the position of the hook connection part (211) so that it can be looped around the landing gear (201) of the aircraft (200).

8. The aircraft towing trailer according to claim 7, characterized in that, The second telescopic part (210b) is connected to the hook connecting part (211), and the length of the second telescopic part (210b) is one-fifth the length of the first telescopic part (210a).

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