Motor mounting structure of electric vertical take-off and landing aircraft and electric vertical take-off and landing aircraft

Abstract

The utility model provides a kind of motor mounting structure of electric vertical take-off and landing aircraft and electric vertical take-off and landing aircraft, and motor mounting structure is set in motor arm.Just including: installation framework, constitutes frame;Skin, is set to installation framework;And fastener, connects installation framework and skin, installation framework includes: end frame, extends along up-down direction, is fixed in motor arm;Seal frame, extends along up-down direction, with end frame is oppositely arranged in front-rear direction with interval apart;Motor base, is fixed in end frame and seal frame, extends along front-rear direction, for motor installation;Longitudinal stringer, is fixed in end frame and seal frame, extends along front-rear direction, is arranged below motor base with interval apart in up-down direction;And connecting half frame, with end frame and seal frame are separated, and motor base and longitudinal stringer are connected between end frame and seal frame.Adopting the utility model, the rigidity of motor mounting structure can be improved, and the force structure is more reasonable, and the path of load transmission is more direct.

Description

Technical Field

[0001] This application relates to a motor mounting structure and an electric vertical takeoff and landing (eVTOL) aircraft. More specifically, it relates to an eVTOL aircraft lift motor mounting structure and an eVTOL aircraft equipped with the motor mounting structure. Background Technology

[0002] In current electric vertical takeoff and landing aircraft (hereinafter, sometimes referred to as eVTOL, or eVTOL aircraft), the motor mount for the power supply is made of metal and reinforced with ribs to increase strength.

[0003] Furthermore, to withstand loads from the front, back, left, right, and diagonal directions, the motor mount needs to be reinforced in all four directions, making the manufacturing process relatively complex. Patent Document 1 describes a 3D-printed, integral motor mount, but this still requires replacing the reference datum during manufacturing. Moreover, even with the existing cage-like structure, cracks can still develop due to high-frequency fatigue loads, necessitating replacement of the entire motor mount. The integral structure in existing technologies makes replacement difficult and increases maintenance costs. Therefore, there is room for improvement in terms of structural rationality, ease of manufacturing, and maintainability.

[0004] To simplify manufacturing, a cage-like structure for the motor mount was also considered. For example, in Patent Document 2, a motor is mounted on the motor mount body, which includes a base plate. The four sides of the base plate are connected to the motor mount connecting edges, and reinforcing ribs are installed on the connecting edges. In Patent Document 2, the reinforcing ribs and connecting edges are all on one side of the motor mount, resulting in a single-sided machined structure. This eliminates the need to change the reference datum during manufacturing, leading to higher precision and lower manufacturing difficulty. However, this structure still has room for improvement in terms of load-bearing capacity, and Patent Document 2 does not further explore maintainability.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: CN222892183U

[0008] Patent Document 2: CN219779894U Utility Model Content

[0009] The purpose of this application is to provide a novel motor mounting structure for an electric vertical takeoff and landing (eVTOL) aircraft and an eVTOL aircraft equipped with the motor mounting structure. The motor mounting structure has greater rigidity, a more rational stress structure, and a more direct load transmission path.

[0010] One technical solution of this application provides a motor mounting structure for an electric vertical takeoff and landing (EVTOL) aircraft. The motor mounting structure is characterized in that it is disposed on the motor arm of the EVTOL aircraft, and a motor for driving the aircraft propeller is mounted on the motor mounting structure. The motor provides lift to the EVTOL aircraft. The motor mounting structure includes: a mounting frame forming the framework of the motor mounting structure; a skin stretched onto the mounting frame; and fasteners connecting the mounting frame and the skin. The mounting frame includes: an end frame extending along the vertical direction of the fuselage of the EVTOL aircraft, and the end frame is fixed to the motor arm. A sealing frame extending in the vertical direction, the sealing frame and the end frame being disposed opposite each other in the front-rear direction of the machine body at a distance; a motor mount fixed to the end frame and the sealing frame, extending between the end frame and the sealing frame in the front-rear direction for mounting the motor; a longitudinal stringer fixed to the end frame and the sealing frame, extending between the end frame and the sealing frame in the front-rear direction, the longitudinal stringer and the motor mount being disposed below the motor mount at a distance in the vertical direction; and a connecting half-frame separated from the end frame and the sealing frame, connecting the motor mount and the longitudinal stringer between the end frame and the sealing frame.

[0011] Preferably, the motor mount is plate-shaped with an opening in the middle portion, and the motor is mounted on the motor mount such that it enters the opening and has a gap between it and the opening.

[0012] Preferably, the skin includes an upper skin and a lower skin that are independent of each other. The upper skin includes a front cover and a rear cover that are independent of each other. The front cover is detachably attached to the front of the upper part of the mounting frame, the rear cover is detachably attached to the rear of the upper part of the mounting frame, and the lower skin is detachably attached to the lower part of the mounting frame.

[0013] Preferably, the lower skin and the front cover are connected by a connecting plate, and / or, the lower skin is provided with a removable wire harness mounting cover.

[0014] Preferably, the end frame, the sealing frame, the motor base, the longitudinal stringer, and the connecting half-frame are separate structures.

[0015] Preferably, when viewed along the vertical direction, the connecting half-frame overlaps with the motor.

[0016] Preferably, when viewed along the vertical direction, the connecting half-frame overlaps with the motor connection portion, which is the part of the motor mount that connects to the motor.

[0017] Preferably, the connecting half-frame is arc-shaped or U-shaped, and there are multiple connecting half-frames.

[0018] Preferably, multiple fixing holes are provided in the end frame, the motor base, and the connecting half frame at the portion for the skin to be stretched. The skin is fixed to the mounting frame by fastening the fasteners into the fixing holes.

[0019] Preferably, the mounting frame further includes a plurality of strip-shaped skin supports, which extend along the arrangement direction of the plurality of fixing holes and are disposed at the location for the skin to be stretched. The skin is fixed to at least the end frame and the motor base by means of the skin supports.

[0020] Preferably, the end frame is provided with a high-voltage wire through hole and a low-voltage wire through hole, the high-voltage wire through hole being disposed on one side in the vertical direction relative to the motor base, and the low-voltage wire through hole being disposed on the other side in the vertical direction relative to the motor base.

[0021] Another technical solution of this application provides an electric vertical take-off and landing aircraft, which has the motor mounting structure of an electric vertical take-off and landing aircraft as described in any of the above technical solutions.

[0022] By adopting the technical solution of this application, the rigidity of the motor mounting structure can be improved, the stress structure can be made more reasonable, and the load transmission path can be more direct. Attached Figure Description

[0023] Figure 1 An isometric view of the motor mounting structure of the electric vertical takeoff and landing (eVTOL) aircraft of this application connected to the eVTOL aircraft.

[0024] Figure 2 This is an exploded view of the motor mounted on the mounting structure body according to this application.

[0025] Figure 3 This is an exploded view of the mounting structure body of the motor mounting structure of this application.

[0026] Figure 4 This is an exploded view of the skin of the motor mounting structure of this application.

[0027] Figure 5 This is an exploded view of the frame of the motor mounting structure of this application.

[0028] Figure 6 This is an isometric view of the motor mount of the motor mounting structure of this application.

[0029] Figure 7 This is an isometric view of the end frame of the motor mounting structure of this application.

[0030] Explanation of reference numerals in the attached figures

[0031] 1. Motor mounting structure; 2. Fuselage; 10. eVTOL aircraft; 11. Mounting structure body; 111. Mounting frame; 1111. Skin circumferential bracket; 1112. Skin longitudinal bracket; 1113. End frame; 11131. High voltage line through hole; 11132. Low voltage line through hole; 11133. Connecting flange; 11134. Weight reduction hole; 1114. Motor mount; 11141. Motor connection part; 11142. Reinforcing rib; 11143. External connecting flange; 1115. Longitudinal stringer; 1116. Connecting half frame; 1117. Sealing frame; 112. Skin; 1121. Rear cover; 1122. Front cover; 1123. Lower skin; 1124. Connecting plate; 1125. Wiring harness mounting cover; 113. Fasteners; 12. Motor Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings. Of course, the embodiments described below are only some embodiments, not all embodiments. Those skilled in the art can make appropriate changes to the embodiments described below without contradiction, including the substitution, addition, or omission of constituent elements.

[0033] <Structure of an Electric Vertical Takeoff and Landing Aircraft>

[0034] exist Figure 1 The overall structure of the electric vertical takeoff and landing aircraft 10 is schematically shown in the image. (For example...) Figure 1 As shown, the electric vertical takeoff and landing aircraft 10 has a fuselage 2 extending in the longitudinal direction X, and a main wing and a tail wing extending from the fuselage 2 in the left and right directions respectively. A motor arm 3 extending in the longitudinal direction is provided on the main wing, and a propeller is provided on the motor arm 3 to provide lift for the electric vertical takeoff and landing aircraft 10.

[0035] exist Figure 1 In this configuration, the propellers mounted on the motor arms 3 are located on the front and rear sides of the main wing, and the motor arms 3, close to the fuselage 2, are connected to the tail fin. However, the structure of the electric vertical takeoff and landing aircraft 10 is not limited to this.

[0036] <Motor mounting structure>

[0037] The following is based on Figures 1-7 The mounting structure of the motor described in this application will be explained.

[0038] like Figure 1As shown, the electric vertical takeoff and landing aircraft 10 of this application has a motor mounting structure 1, which is used to install the motor arm 3 of the electric vertical takeoff and landing aircraft 10. The motor for driving the aircraft propeller is mounted on the motor mounting structure 1, and the motor drives the propeller to provide lift for the electric vertical takeoff and landing aircraft 10.

[0039] exist Figure 2 The figure shows an exploded perspective view (exploded perspective view) of the mounting structure body 11 for mounting the motor 12 and the power supply 12 for driving an aircraft propeller according to this application. The mounting structure body 11 is, for example, the front part of the motor arm 3, but it may also be other parts of the motor arm 3 for mounting the motor 12.

[0040] Furthermore, the motor 12 described herein refers to the motor assembly, that is, it includes not only the motor itself, but also related supporting components. The mounting structure body 11 of this application can be used to mount the motor and related supporting components.

[0041] exist Figure 3 An exploded view of the mounting structure body 11 is shown. (See attached image.) Figure 3 As shown, the mounting structure body 11 includes: a mounting frame 111, which forms the frame of the motor mounting structure 1. The mounting frame 111 has a portion extending in the front-rear direction X and a portion extending in the vertical direction Y, and the whole is a cage structure; a skin 112, which is stretched on the mounting frame 111; and a fastener 113, which connects the mounting frame 111 and the skin 112, that is, the skin 112 is fixed to the mounting frame 111 by the fastener 113.

[0042] <Structure of the mounting frame>

[0043] exist Figure 5 The specific structure of the mounting frame 111 is shown in the figure. For example... Figure 5As shown, the mounting frame includes: an end frame 1113, which extends vertically along the fuselage 2 of the electric vertical takeoff and landing aircraft, and is fixed to other parts of the motor arm 3 at the rear of the motor mounting structure 1; a sealing frame 1117, which extends vertically, and is spaced apart from the end frame 1113 in the longitudinal direction of the fuselage 2, with the sealing frame 1117 positioned in front of the end frame 1113; and a motor mount 1114, which is fixed to the end frame 1113 and the sealing frame 1117, and extends longitudinally between the end frame 1113 and the sealing frame 1117. Extending in the direction, the motor 12 is installed; a longitudinal stringer 1115, which is fixed to the end frame 1113 and the sealing frame 1117, extends in the front-back direction between the end frame 1113 and the sealing frame 1117, and the longitudinal stringer 1115 is arranged below the motor base 1114 at intervals in the vertical direction; and a connecting half frame 1116, which is separated from the end frame 1113 and the sealing frame 1117 in the front-back direction X, and connects the motor base 1114 and the longitudinal stringer 1115 between the end frame 1113 and the sealing frame 1117.

[0044] like Figure 5 As shown, the sealing frame 1117 is positioned in front of the end frame 1113. The area of ​​the sealing frame 1117 is smaller than that of the end frame 1113, and the sealing frame 1117 has a roughly semi-circular shape with a straight upper end and an arc-shaped lower end and both sides. Therefore, after fixing the skin 112, the motor arm 3 is formed into a shape that tapers towards the sealing frame 1117 from the end frame 1113. One end of the motor base 1114 is fixedly connected to the upper end of the sealing frame 1117, and the other end of the motor base 1114 is fixedly connected to the middle end of the end frame 1113. One end of the longitudinal stringer 1115 is fixedly connected to the lower end of the sealing frame 1117, and the other end of the longitudinal stringer 1115 is fixedly connected to the lower end of the end frame 1113.

[0045] exist Figure 6 The figure shows an isometric view of the plate-shaped motor mount 1114. Figure 6 This is a perspective view obtained from the inside of the motor mount 1114. The outside of the motor mount 1114 is shown in... Figure 5 In the outer periphery of the motor mount 1114, the front and rear ends are straight, while the sides are curved. Furthermore, in addition to the front end, external connecting flanges 11143 are formed on both sides and the rear end. The width of the front end of the motor mount 1114 without the external connecting flanges 11143 is approximately the same as the upper width of the sealing frame 1117. Therefore, the front end of the motor mount 1114 can be fixedly connected to the upper end of the sealing frame 1117 in a roughly aligned left-right direction, and the external connecting flanges 11143 on both sides of the motor mount 1114 can be fitted against the two sides of the sealing frame 1117 in the left-right direction, further strengthening the connection between the motor mount 1114 and the sealing frame 1117.

[0046] In addition, the rear end of the motor mount 1114 is fixedly connected to the end frame 1113 by means of its external connecting flange 11143 fitting against the end frame 1113. At the fixed connection between the motor mount 1114 and the end frame 1113, L-shaped fasteners 1118 are used to fix the surface of the motor mount 1114 and the end frame 1113 respectively to further strengthen the fixation between the motor mount 1114 and the end frame 1113.

[0047] like Figure 6 As shown, an opening 11144 is provided in the middle portion of the motor mount 1114. An inner flange 11145 surrounds this opening 11144. Multiple motor connection portions 11141 protrude from the inner flange 11145 toward the inside of the opening 11144. These motor connection portions 11141 are the parts of the motor mount 1114 that connect to the motor 12. Holes are formed in the motor connection portions 11141. When the motor 12 is installed in the motor mount 1114, a portion of the motor 12 enters the opening 11144 and is installed in the motor connection portion 11141. The holes in the mounting portion of the motor 12 are aligned with the holes in the motor connection portion 11141. A fastener passes through these holes to securely fix the motor 12 to the motor mount 1114. Furthermore, it is preferable to have a gap between the installed motor 12 and the edge of the opening 11144 of the motor mount 1114, that is, so that the motor 12 does not completely block the opening 11144, thereby allowing airflow to pass through the gap to cool the motor 12.

[0048] like Figure 6 As shown, reinforcing ribs 11142 are formed at multiple locations between the inner flange 11145 and the outer connecting flange 11143 to enhance the rigidity of the motor base 1114.

[0049] like Figure 5 As shown, the longitudinal girder 1115 has two elongated members, the two ends of which are connected to the end frame 1117 and the end frame 1113 respectively. The cross-section of the elongated members can be, for example, T-shaped. The front ends of the two elongated members of the longitudinal girder 1115 can be fixedly connected to the end frame 1117 respectively, or the front ends of the two elongated members can be formed as one piece before being fixedly connected to the end frame 1117. The front end of the longitudinal girder 1115 can have an arc that matches the arc of the lower end of the end frame 1117 to better fix and connect the longitudinal girder 1115 and the end frame 1117.

[0050] exist Figure 5 In the design, two connecting half-frames 1116, spaced apart in the front-to-back direction, are formed between the end frame 1117 and the end frame 1113. The connecting half-frames 1116 are separately positioned from both the end frame 1117 and the end frame 1113. Figure 5Two connecting half-frames 1116 are shown, but there can be one or more connecting half-frames 1116.

[0051] like Figure 5 As shown, the connecting half-frame 1116 is arc-shaped or U-shaped. Both ends of the connecting half-frame 1116 are fixedly connected to the left and right sides of the bottom surface of the motor base 1114, respectively. The middle portion between the two ends of the connecting half-frame 1116 is fixedly connected to two long strip-shaped members of the longitudinal stringer 1115. Furthermore, the connecting half-frame 1116 also has an inner flange and an outer connecting flange, and reinforcing ribs are formed at multiple locations between the inner flange and the outer connecting flange to enhance the rigidity of the connecting half-frame 1116.

[0052] Preferably, when viewed vertically, the connecting half-frame 1116 overlaps with the motor 12. More preferably, when viewed vertically, the connecting half-frame 1116 overlaps with the motor connection portion 11141.

[0053] Figure 7 This is the isometric view of end frame 1113, as shown below. Figure 7 As shown, a low-voltage line through-hole 11132 and a high-voltage line through-hole 11131 are provided in the end frame 1113 to allow the low-voltage line used for signal transmission and the high-voltage line used for power supply to pass through respectively. In the middle region of the end frame 1113 in the vertical direction, there is a part for fixing the power supply base 1114. The high-voltage line through-hole 11131 is disposed on one side of the vertical direction relative to this part, and the low-voltage line through-hole 11132 is disposed on the other side of the vertical direction relative to this part. That is, the high-voltage line through-hole 11131 and the low-voltage line through-hole 11132 are respectively disposed on two opposite sides of the vertical direction relative to this part.

[0054] exist Figure 7 In the end frame 1113, two low-voltage line through-holes 11132 and two high-voltage line through-holes 11131 are provided. However, the number of low-voltage line through-holes 11132 and high-voltage line through-holes 11131 is not limited to these; it can be one or more. Furthermore, the number of low-voltage line through-holes 11132 and high-voltage line through-holes 11131 can also be different. In addition, a weight-reducing hole 11134 is provided on the upper part of the end frame 1113. The location of this weight-reducing hole 11134 is not limited; it can be located on the lower part of the end frame 1113, or it can be located on both the upper and lower parts of the end frame 1113.

[0055] In addition, such as Figure 7As shown, a connecting flange 11133 is also formed on the outer periphery of the end frame 1113. The connecting flange 11133 extends from the periphery of the surface of the end frame 1113 (the surface on which the power supply base 1114 is fixed) toward the opposite side of the motor base 1114. The connecting flange 11133 can be used to fix the end frame 1113 to other parts of the motor arm 3. In addition, the connecting flange 11133 also provides a part for fixing the skin 112. It is also preferable that a reinforcing rib is formed on the back side of the end frame 1113.

[0056] Preferably, the end frame 1113, the sealing frame 1117, the motor base 1114, the longitudinal stringer 1115, and the connecting half-frame 1116 are manufactured independently of each other, which is a split structure.

[0057] <Structure of Skin>

[0058] Figure 4 This is an exploded view of the skin 112 of this application. (See attached image.) Figure 4 As shown, the skin 112 includes an independent (i.e., separate) upper skin and a lower skin 1123. The upper skin includes an independent (i.e., separate) front cover 1122 and a rear cover 1121. The front cover 1122 is detachably attached to the front of the upper portion of the mounting frame 111, and the rear cover 1121 is detachably attached to the rear of the upper portion of the mounting frame 111. The lower skin 1123 is detachably attached to the lower portion of the mounting frame 111. The lower skin 1123 and the front cover 1122 are connected by a connecting plate 1124, and the lower skin 1123 is provided with a detachable wire harness mounting cap 1125.

[0059] Regarding fasteners, components such as bolts can be selected, such as... Figure 5 As shown, multiple fixing holes 11119 are provided at the end frame 1113, motor base 1114, and connecting half frame 1116 of the mounting frame 111 for the skin 112 to be stretched. By fastening the fasteners 113 into the fixing holes, the skin 112 is fixed to the end frame 1113, motor base 1114, connecting half frame 1116, and other parts of the mounting frame 111.

[0060] Preferably, the motor mounting structure 1 also has multiple strip-shaped skin supports, including a circumferential skin support 1111 and a longitudinal skin support 1112, such as... Figure 5As shown, multiple strip-shaped circumferential skin supports 1111 can extend, for example, along the arrangement direction of multiple fixing holes in the end frame 1113, and multiple strip-shaped longitudinal skin supports 1112 can extend, for example, along the arrangement direction of multiple fixing holes in the motor mount 1114. Furthermore, the multiple strip-shaped circumferential skin supports 1111 are arranged along the outer periphery of the end frame 1113, and the multiple strip-shaped longitudinal skin supports 1112 are arranged along the outer periphery of the motor mount 1114. The skin bracket can be L-shaped strips to fit the motor mount 1114, end frame 1113, longitudinal stringer 1115 and other components. Each skin circumferential bracket 1111 and each skin longitudinal bracket 1112 also has fixing holes 11118. Therefore, each skin bracket can be fitted to the mounting frame 111 with the fixing holes 11118 and 11119 aligned. In this state, the skin 112 is fixedly installed on the mounting frame 111 (and each skin bracket) as a detachable structure for easy maintenance.

[0061] <Effect>

[0062] The mounting frame of this application adopts a cage structure, with structures designed in both the circumferential (vertical) and longitudinal (front-back) directions. Furthermore, a connecting half-frame is designed at the lower part of the motor base. Thus, the tensile force generated by the motor is directly transmitted downwards to the connecting half-frame. The force transmission path is direct, the force-bearing structure is reasonable, and it can effectively withstand the load transmitted from the motor, thereby bearing the complex forces on the motor.

[0063] Specifically, when viewed vertically, the overlapping of the connecting half-frame and the motor allows for better load transfer. Furthermore, when the connecting half-frame overlaps with the motor connection point, the load from the motor is directly transferred to the motor mount through the motor connection point. Therefore, the overlapping connecting half-frame can more directly bear and transfer the load. It should be noted that this overlap includes both complete and partial overlap.

[0064] By providing an opening in the motor mount and positioning the motor so that it enters the opening, and by creating a gap between the motor and the opening, airflow can pass through the gap, thereby aiding in the cooling of the motor.

[0065] By dividing the skin into an independent upper skin and a lower skin, further dividing the upper skin into an independent front cover and a rear cover, and making both the upper and lower skins detachable, maintenance personnel can easily inspect and maintain the motor.

[0066] By using a connecting plate to connect the lower skin and the front cover together, the separation of the independent lower skin and front cover can be avoided. Furthermore, by providing a removable wiring harness mounting cover on the lower skin, the wiring harness within the motor mounting structure can be inspected and maintained by removing the wiring harness mounting cover.

[0067] By manufacturing the end frame, sealing frame, motor base, longitudinal stringer, and connecting half-frame independently, each component can be processed independently, simplifying the overall processing of the motor mounting structure. Furthermore, even if a component of the motor mounting structure cracks due to fatigue, it can be replaced individually by disassembly, resulting in low maintenance costs.

[0068] By connecting the semi-frames in an arc or U shape, it is possible to connect the motor base and the longitudinal stringer, as well as to connect two (or more) long strip-shaped components of the longitudinal stringer to each other, thereby further improving the overall rigidity of the motor mounting structure.

[0069] By setting multiple fixing holes on the end frame, motor base, and connecting half-frame, which mainly perform load transfer functions, and fixing the skin to the mounting frame, a cage structure is formed by the skin and the mounting frame. The overall structure of the skin, end frame, motor base, and connecting half-frame has high rigidity and high modal efficiency, which avoids the structural modes from coinciding with the propeller rotation frequency and prevents structural resonance.

[0070] By including the skin support in the mounting frame and extending the skin support along the direction of the mounting holes, the skin rigidity can be improved.

[0071] By positioning the high-voltage line through-hole in the end frame on one side of the vertical direction relative to the motor base, and the low-voltage line through-hole in the end frame on the other side of the vertical direction relative to the motor base, a certain distance is created between the high-voltage line through-hole and the low-voltage line through-hole, thereby separating the high and low voltages and avoiding electromagnetic interference.

[0072] For fasteners, mechanical connection methods such as threaded fasteners can be used, which are not affected by the temperature rise of the motor itself, thus ensuring a reliable connection.

[0073] See Figure 1 The motor mounting structure installed on the front side of the motor arm 3 has been described above. However, the motor can also be installed on the rear side or in the middle of the motor arm 3, where a substantially the same or similar motor mounting structure can be used. At least some parts of the front and rear motor mounting structures can be interchanged for use.

Claims

1. A motor mounting structure for an electric vertical takeoff and landing (EVTOL) aircraft, characterized in that, The motor mounting structure is used to mount the motor arm of the electric vertical takeoff and landing (EVTOL) aircraft. A motor for driving the aircraft propeller is mounted on the motor mounting structure, and the motor provides lift to the EVTOL aircraft. The motor mounting structure includes: The mounting frame constitutes the framework of the motor mounting structure; Skin, which is stretched onto the mounting frame; and Fasteners that connect the mounting frame and the skin. The mounting frame includes: An end frame extends vertically along the fuselage of the electric vertical takeoff and landing aircraft and is fixed to the motor arm; A sealing frame extends along the vertical direction, and the sealing frame and the end frame are arranged opposite each other at a distance in the front-rear direction of the machine body; A motor mount, which is fixed to the end frame and the sealing frame, extends along the front-rear direction between the end frame and the sealing frame for mounting the motor; A longitudinal stringer, fixed to the end frame and the sealing frame, extends along the front-rear direction between the end frame and the sealing frame; the longitudinal stringer and the motor mount are spaced apart in the vertical direction and disposed below the motor mount; and A connecting half-frame, which is separated from the end frame and the sealing frame, connects the motor base and the longitudinal stringer between the end frame and the sealing frame.

2. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The motor mount is plate-shaped and has an opening in the middle portion. The motor is mounted in the motor mount such that it enters the opening and has a gap between it and the opening.

3. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The skin comprises an upper skin and a lower skin, which are independent of each other. The upper skin comprises a front cover and a rear cover that are independent of each other. The front cover is detachably attached to the front of the upper part of the mounting frame, the rear cover is detachably attached to the rear of the upper part of the mounting frame, and the lower skin is detachably attached to the lower part of the mounting frame.

4. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 3, characterized in that, The lower skin and the front cover are connected by a connecting plate, and / or the lower skin is provided with a removable wire harness mounting cover.

5. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The end frame, the sealing frame, the motor base, the longitudinal stringer, and the connecting half-frame are separate structures.

6. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, When viewed along the vertical direction, the connecting half-frame overlaps with the motor.

7. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 6, characterized in that, When viewed along the vertical direction, the connecting half-frame overlaps with the motor connection part, which is the part of the motor mount that connects to the motor.

8. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The connecting half-frame is arc-shaped or U-shaped, and there are multiple connecting half-frames.

9. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, Multiple fixing holes are provided at the locations on the end frame, the motor base, and the connecting half-frame where the skin is to be stretched. The skin is secured to the mounting frame by fastening the fasteners into the fixing holes.

10. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 9, characterized in that, The mounting frame also includes multiple strip-shaped skin supports, which extend along the arrangement direction of the multiple fixing holes and are positioned at the locations where the skin is stretched. The skin is fixed to at least the end frame and the motor mount by means of the skin bracket.

11. The motor mounting structure of the electric vertical takeoff and landing aircraft according to claim 1, characterized in that, The end frame is provided with high-voltage line through-holes and low-voltage line through-holes. The high-voltage line through-hole is located on one side in the vertical direction relative to the motor mount. The low-voltage wire through hole is located on the opposite side in the vertical direction relative to the motor mount.

12. An electric vertical takeoff and landing aircraft, characterized in that, The electric vertical takeoff and landing aircraft has the motor mounting structure of the electric vertical takeoff and landing aircraft as described in any one of claims 1 to 11.

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