A landing gear trailer for an eVTOL aircraft

Abstract

The utility model discloses a landing gear trailer of eVTOL aircraft relates to the field of aircraft. The landing gear trailer includes support frame structure and prop up connecting structure, and support frame structure is fixed and is welded by a plurality of crossbeam and stringer, and prop up connecting structure includes elevating system, chuck connecting piece and landing gear chuck, and elevating system bottom is fixed with support frame structure, and top is connected landing gear chuck through adjustable direction's chuck connecting piece, and landing gear chuck is used for supporting landing gear plate spring. The utility model discloses utilize landing gear trailer to make eVTOL aircraft get better mobility and flexibility in limited space, make its application in at the airport or maintenance facility or in aircraft manufacturing during in manufacturing workshop fast movement, the demand of test, and structural member all are designed to can be separately installed or disassembled to make the whole landing gear trailer's installation and maintenance process become simple and easy, and the convenient and efficient operation of remarkable improvement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aircraft technology, especially to a landing gear trailer of eVTOL aircraft. BACKGROUND

[0002] The landing gear of eVTOL aircraft (electric vertical take-off and landing) is not equipped with a power system for forward movement, so the landing gear trailer is particularly critical and indispensable for the rapid movement and testing of eVTOL aircraft in the airport, maintenance facilities, or workshop during aircraft manufacturing.

[0003] Although the existing landing gear trailer can meet the basic movement and testing requirements, it is often complex in structure, high in cost, and difficult to maintain. For example, some trailers use complex hydraulic systems to support and move the landing gear, which not only increases the difficulty of manufacturing and maintenance, but also increases the complexity of operation. In addition, due to design limitations, the parts of some trailers cannot be quickly replaced, resulting in prolonged maintenance time and affecting the efficiency of the aircraft.

[0004] To solve these problems, the utility model provides a landing gear trailer specially designed for eVTOL aircraft. SUMMARY

[0005] The utility model provides a landing gear trailer of eVTOL aircraft, include: support frame structure and prop up connecting structure, support frame structure by a plurality of crossbeam (11) and longitudinal beam (12) fixed welding, prop up connecting structure includes elevating system (21), chuck connecting piece (22) and landing gear chuck (23), elevating system (21) bottom and support frame structure are fixed, top is connected landing gear chuck (23) through adjustable direction's chuck connecting piece (22), landing gear chuck (23) is used for supporting landing gear leaf spring.

[0006] The landing gear trailer of eVTOL aircraft as described above, wherein the support frame structure includes a support frame and universal wheels (13), the support frame includes two symmetrically arranged crossbeams (11), and four longitudinal beams (12) fixedly welded between the two crossbeams (11); the four longitudinal beams (12) include two longitudinal beams close to the left side of the crossbeam and two longitudinal beams symmetrically close to the right side of the crossbeam; a plurality of universal wheels (13) are installed at the bottom of the two crossbeams (11), and the universal wheels (13) are fixedly connected with the longitudinal beams (12) through bolts.

[0007] The landing gear trailer of eVTOL aircraft as described above, wherein six universal wheels (13) are installed, respectively located at the bottom corners of the support frame and the middle of the crossbeam.

[0008] The landing gear trailer of the eVTOL aircraft as described above, wherein the bottom of the lifting mechanism (21) is fixed with the support frame structure through a support plate, the support plate comprises an upper support plate (141) and a lower support plate (142), the upper surfaces of the two longitudinal beams (12) on the left and right sides are respectively fixed with an upper support plate (141) through bolts, and the lower surfaces of the two longitudinal beams (12) on the left and right sides are respectively fixed with a lower support plate (142) through welding.

[0009] The landing gear trailer of the eVTOL aircraft as described above, wherein holes capable of placing the lifting mechanism (21) are formed in the two upper support plates (141) on the left and right sides, the two lifting mechanisms (21) on the left and right sides respectively pass through the holes in the two upper support plates (141) on the left and right sides, and are fixed at the connecting positions of the lifting mechanisms (21) and the upper support plates (141) through fasteners (143), after the bottoms of the two lifting mechanisms (21) on the left and right sides pass through the upper support plates (141), the mounting holes in the bottoms of the lifting mechanisms (21) are fixed with the upper surfaces of the lower support plates (142) through bolts.

[0010] The landing gear trailer of the eVTOL aircraft as described above, wherein the chuck connecting piece (22) comprises mounting components (221) and rotating components (222), the mounting components (221) are arranged in parallel and have central holes, the extension parts at the two ends of the rotating components (222) are inserted into the holes in the two mounting components (221), and the rotating components (222) can move between the two mounting components (221); recesses are formed in the bottoms of the rotating components (222), and the tops of the lifting mechanisms (21) are mounted in the recesses in the bottoms of the rotating components (222).

[0011] The landing gear trailer of the eVTOL aircraft as described above, wherein the mounting components (221) are fixedly connected with the bottoms of the landing gear chucks (23) through screws, and the tops of the landing gear chucks (23) are provided with clamping grooves for supporting the landing gear plate springs.

[0012] The landing gear trailer of the eVTOL aircraft as described above, wherein the lifting mechanism (21) is a jack.

[0013] The landing gear trailer of the eVTOL aircraft as described above, wherein the lifting mechanism (21) is a jack.

[0014] (1) The landing gear trailer is used to make the eVTOL aircraft have better mobility and flexibility in limited space, so that the eVTOL aircraft can be quickly moved, tested, applied in an airport or maintenance facility, or applied during aircraft manufacturing in a manufacturing workshop, and the main structural parts are welding parts and machined parts, which are simple and fast to process and low in cost.

[0015] (2) All structural parts are designed to be individually installed or removed, making the installation and maintenance of the entire landing gear trailer simple and easy, significantly improving the convenience and efficiency of operation, not only reducing maintenance costs, but also shortening maintenance time, thereby improving the efficiency and reliability of the eVTOL aircraft.

[0016] (3) It can ensure that the eVTOL aircraft can maintain the best operating state in various environments, and also provides great convenience for the operator, so that the operator can more efficiently complete daily maintenance and operation tasks. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0018] Figure 1 A landing gear trailer structure diagram of an eVTOL aircraft is provided for the embodiments of the present application.

[0019] Figure 2 It is a front view of the landing gear trailer.

[0020] Figure 3 It is a schematic view of the chuck connecting part and the landing gear chuck connecting structure.

[0021] Reference signs:

[0022] 11, cross beam; 12, longitudinal beam; 13, universal wheel; 141, upper support plate; 142, lower support plate; 143, fastener; 21, lifting mechanism; 22, chuck connecting part; 23, landing gear chuck; 221, mounting part; 222, rotating part. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] EMBODIMENT

[0025] As Figure 1 and Figure 2As shown, the utility model provides a kind of landing gear trailer of eVTOL aircraft, comprising: support frame structure and prop up connecting structure;Support frame structure is fixedly welded by multiple cross beams 11 and longitudinal beam 12, prop up connecting structure includes lifting mechanism 21, chuck connecting piece 22 and landing gear chuck 23, lifting mechanism 21 bottom is fixed with support frame structure, top is connected landing gear chuck 23 by adjustable direction chuck connecting piece 22, landing gear chuck 23 is used to support landing gear plate spring.

[0026] Specifically, support frame structure includes support frame and universal wheel 13, support frame includes two symmetrical cross beams 11, and four longitudinal beams 12 are fixedly welded between two cross beams 11, four longitudinal beams 12 include two longitudinal beams close to the left side of cross beam and two longitudinal beams close to the right side of cross beam symmetrically;The symmetrical arrangement of the cross beam 11 and longitudinal beam 12 of support frame structure ensures the stability and carrying capacity of trailer.

[0027] Multiple universal wheels 13 are installed at the bottom of two cross beams 11, and the movement of the trailer is completed by relying on multiple universal wheels 13 installed on the lower side of the two longitudinal beams 12 arranged symmetrically, and the universal wheels 13 are fixedly connected with the longitudinal beams 12 by bolts. Preferably, six universal wheels 13 are installed, respectively located at the bottom corners of the support frame and the middle of the cross beam 11, to provide support for the bottom of the support frame and the middle of the cross beam 11, and the six universal wheels 13 at the bottom of the landing gear trailer can enable the eVTOL aircraft to move quickly, and the arrangement of the six universal wheels 13 not only ensures the mobility of the trailer, but also provides good controllability and stability during operation.

[0028] The bottom of the lifting mechanism 21 is fixed with the support frame structure through a support plate, and the support plate includes an upper support plate 141 and a lower support plate 142. The upper surfaces of the two longitudinal beams 12 on the left and right sides are respectively fixed with an upper support plate 141 by bolts, and the bolt connection between the upper support plate 141 and the longitudinal beam 12 provides the necessary flexibility to adapt to the size and shape of the landing gear of different models of eVTOL aircraft. The lower surfaces of the two longitudinal beams 12 on the left and right sides are respectively fixedly welded with a lower support plate 142, and the welded fixation between the lower support plate 142 and the longitudinal beam 12 enhances the rigidity of the structure.

[0029] Holes are formed in the two upper support plates 141 on the left and right sides to accommodate the lifting mechanism 21, and the two lifting mechanisms 21 pass through the holes in the two upper support plates 141 on the left and right sides, respectively, and are fixed at the connection position between the lifting mechanism 21 and the upper support plate 141 by fasteners 143. After the bottom of the two lifting mechanisms 21 passes through the upper support plate 141, the mounting holes at the bottom of the lifting mechanism 21 are fixed with the upper surface of the lower support plate 142 by bolts. The symmetrical arrangement of the two lifting mechanisms 21 on the left and right sides and the bolt connection between the lifting mechanism 21 and the lower support plate 142 ensure the uniformity and synchronicity of the lifting process.

[0030] The supporting connection structure specifically comprises a lifting mechanism 21, a chuck connecting piece 22 and a landing gear chuck 23; the lifting mechanism 21 can be selected from a jack and other devices capable of lifting; the bottom of the lifting mechanism 21 is fixed with a supporting plate, and the top is provided with the chuck connecting piece 22, and the chuck connecting piece 22 is provided with the landing gear chuck 23 capable of adjusting the direction; the clamping groove of the landing gear chuck 23 is used for supporting the landing gear plate spring, and the position of the landing gear chuck 23 can be adjusted through the chuck connecting piece 22 capable of adjusting the direction; and the adjustable installation direction of the chuck connecting piece 22 allows an operator to adjust the installation angle of the chuck according to the actual situation, so as to adapt to the landing gear plate spring at different angles.

[0031] As shown in Figure 3 The chuck connecting piece 22 comprises an installation part 221 and a rotating part 222; the installation part 221 is provided in parallel with two middle holes; the extending parts at both ends of the rotating part 222 are inserted into the holes of the two installation parts 221, and the rotating part 222 can move between the two installation parts 221; the bottom of the rotating part 222 is provided with a groove, and the top of the lifting mechanism 21 is correspondingly installed in the groove at the bottom of the rotating part 222; the installation part 221 is fixedly connected with the bottom of the landing gear chuck 23 through screws, and the screw connection between the landing gear chuck 23 and the chuck connecting piece 22 ensures the stable clamping of the chuck on the landing gear plate spring, thereby guaranteeing the safety and reliability of the entire landing gear trailer system. The top of the landing gear chuck 23 is provided with a clamping groove for supporting the landing gear plate spring; the top clamping groove of the landing gear chuck 23 clamps the landing gear plate spring by repeatedly pressing the jack pressing rod.

[0032] The working principle of the utility model is as follows:

[0033] When the landing gear trailer works, first, the landing gear trailer is transported to the position below the eVTOL aircraft corresponding to the position of the aircraft landing gear, and the top clamping groove of the landing gear chuck 23 clamps the landing gear plate spring by repeatedly pressing the jack pressing rod; the jack continuously lifts until the main landing gear leaves the ground, and the six universal wheels 13 at the bottom of the landing gear trailer make the eVTOL aircraft move quickly. The landing gear trailer provided by the utility model can effectively assist the ground movement of the eVTOL aircraft, reduce the damage to the aircraft landing gear, and improve the efficiency of ground operation; through precise mechanical design and structural optimization, the eVTOL aircraft landing gear is quickly, safely and conveniently processed. In addition, the modular design of the landing gear trailer is also convenient for maintenance and upgrading to adapt to the development and changes of future eVTOL aircraft technology.

[0034] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that the present application can be implemented in other embodiments without departing from the spirit or essential characteristics of the present application. The embodiments should therefore not be considered to be exhaustive or limiting, the scope of the present application being defined by the appended claims rather than by the above description. It is therefore intended that all changes and modifications that come within the meaning and range of equivalency of the claims are resolvable by the following claims. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0035] In the description of the present application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For a person skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. An eVTOL aircraft's landing gear dolly, characterized in that, The utility model relates to a support frame structure and prop up connecting structure, and the support frame structure is fixedly welded by a plurality of cross beams (11) and longitudinal beams (12), and the prop up connecting structure comprises a lifting mechanism (21), chuck connecting piece (22) and undercarriage chuck (23), the bottom of lifting mechanism (21) is fixed with the support frame structure, and the top is connected with undercarriage chuck (23) through the chuck connecting piece (22) of adjustable direction, and undercarriage chuck (23) is used for supporting undercarriage plate spring. The support frame structure comprises a support frame and universal wheels (13), and the support frame comprises two symmetrical cross beams (11) and four longitudinal beams (12) fixedly welded between the two cross beams (11); the four longitudinal beams (12) comprise two longitudinal beams close to the left side of the cross beam and two longitudinal beams symmetrically close to the right side of the cross beam; a plurality of universal wheels (13) are installed at the bottom of the two cross beams (11), and the universal wheels (13) are fixedly connected with the longitudinal beams (12) through bolts.

2. A landing gear dolly for an eVTOL aircraft as claimed in claim 1 characterised in that, Six universal wheels (13) are installed at the bottom of the support frame, respectively at the four corners and the middle of the cross beam.

3. A landing gear dolly for an eVTOL aircraft as claimed in claim 2, characterised in that, The bottom of the lifting mechanism (21) is fixed with the support frame structure through a support plate, and the support plate comprises an upper support plate (141) and a lower support plate (142); the upper surfaces of the two longitudinal beams (12) on the left and right sides are fixed with one upper support plate (141) through bolts respectively, and the lower surfaces of the two longitudinal beams (12) on the left and right sides are fixedly welded with one lower support plate (142) respectively.

4. A landing gear dolly for an eVTOL aircraft as claimed in claim 2, characterised in that, Holes capable of placing the lifting mechanisms (21) are formed in the two upper support plates (141) on the left and right sides, and the two lifting mechanisms (21) on the left and right sides pass through the holes of the two upper support plates (141) on the left and right sides respectively, and are fixed at the connecting positions of the lifting mechanisms (21) and the upper support plates (141) through fasteners (143); after the bottoms of the two lifting mechanisms (21) on the left and right sides pass through the upper support plates (141), the mounting holes in the bottoms of the lifting mechanisms (21) are fixed with the upper surfaces of the lower support plates (142) through bolts.

5. An eVTOL aircraft's landing gear trailer as claimed in claim 4, characterised in that, The chuck connecting piece (22) comprises mounting components (221) and rotating components (222), the mounting components (221) are arranged in parallel and have holes in the middle portions, the extending portions at the two ends of the rotating components (222) are inserted into the holes of the two mounting components (221), and the rotating components (222) can move between the two mounting components (221); recesses are formed in the bottoms of the rotating components (222), and the tops of the lifting mechanisms (21) are installed in the recesses in the bottoms of the rotating components (222) correspondingly.

6. An eVTOL aircraft's landing gear dolly as claimed in claim 1 characterised in that, The mounting components (221) are fixedly connected with the bottom of the undercarriage chuck (23) through screws, and the top of the undercarriage chuck (23) is provided with a clamping groove for supporting the undercarriage plate spring.

7. An eVTOL aircraft's landing gear trailer as claimed in claim 6, characterised in that, The lifting mechanism (21) is a jack.

8. A landing gear dolly for an eVTOL aircraft as claimed in any one of claims 1 to 7, characterized in that, ​

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