CN216969998U - Unmanned transport plane - Google Patents

Abstract

The utility model relates to an unmanned transport plane, this unmanned transport plane include organism and transport case, and the organism includes aircraft nose and fuselage, and the lower surface of at least part fuselage is higher than the lower surface of aircraft nose to form the breach that is used for holding the transport case between fuselage and the aircraft nose, be provided with first connection structure on the organism, be provided with second connection structure on the transport case, first connection structure is connected with second connection structure detachably. In foretell unmanned transport plane, transport case detachably installs in the fuselage below, can carry out preloading to the article in the transport case, and the transport case that will load again and have article is connected with the organism fast when the organism is berthhed to save unmanned transport plane's berth time, improve conveying efficiency. And, can install the transport case of different grade type on the organism fast according to the transportation scene of difference.

Description

Unmanned transport plane

Technical Field

The disclosure relates to the field of unmanned transportation, in particular to an unmanned transporter.

Background

With the gradual increase of unmanned transportation demand, unmanned transport plane gradually enters people's life to realize the cargo transportation function in various scenes. The existing unmanned transport plane is usually improved from a traditional manually-driven transport plane, namely, goods are loaded in a cabin body of the unmanned transport plane, and the mode ensures that the unmanned transport plane needs to be parked on the ground and then loaded and unloaded with the goods, thereby reducing the transport efficiency of the unmanned transport plane.

SUMMERY OF THE UTILITY MODEL

An object of the present disclosure is to provide an unmanned transport vehicle to solve technical problems occurring in the related art.

In order to realize the above-mentioned purpose, this disclosure provides an unmanned cargo airplane, including organism and transport case, the organism includes aircraft nose and fuselage, at least part the lower surface of fuselage is higher than the lower surface of aircraft nose, so that the fuselage with form between the aircraft nose and be used for holding the breach of transport case, be provided with first connection structure on the organism, be provided with second connection structure on the transport case, first connection structure with second connection structure detachably connects.

Optionally, the first connecting structure is disposed on the body, the first connecting structure is a hook structure, the second connecting structure is a hanging ring structure, and the hook structure can be hooked with or released from the hanging ring structure.

Optionally, the suspension loop structure comprises a suspension loop;

the hook structure comprises a hook, an elastic part and a fixed shaft, the fixed shaft is fixed on the machine body, the hook is rotatably arranged on the fixed shaft and comprises a hook part for being hooked with the hanging ring, the hanging ring can push the hook part to rotate upwards in the upward moving process so as to enable the hook part and the hanging ring to be staggered mutually, and the elastic part is used for applying elastic force for enabling the hook part to rotate downwards to the hook when the hook part and the hanging ring are staggered mutually so as to enable the hook part to penetrate through the hanging ring and be hooked with the hanging ring;

the hook structure further comprises a locking assembly used for locking the hook in an unlocking mode, the locking assembly is provided with a locking state and an unlocking state, the locking assembly enables the hook to be locked at a position where the hook portion is connected with the hanging ring in an hanging mode, and the locking assembly releases the hook to enable the hook portion to rotate downwards and separate from the hanging ring in the downward moving process of the hanging ring.

Optionally, the locking assembly includes a driving element, a limiting element and a rotation stopping element, the limiting element is rotatably connected to the fixed shaft, the hook further includes a limiting portion formed on the hook portion, the limiting portion rotatably penetrates through the limiting element and is located on a side of the limiting element away from the hook portion, a through hole is formed in the rotation stopping element, one end of the limiting element away from the fixed shaft can be inserted into the through hole, and the driving element is connected with the rotation stopping element and is used for driving the rotation stopping element to move;

in the locking state, the driving member drives the rotation stopping member to move towards the direction close to the limiting member and enables one end, far away from the fixed shaft, of the limiting member to be inserted into the through hole so as to limit the downward rotation of the limiting member, the limiting portion abuts against the limiting member, and in the unlocking state, the driving member drives the rotation stopping member to move towards the direction far away from the limiting member so as to enable one end, far away from the fixed shaft, of the limiting member to be separated from the through hole.

Optionally, the elastic element is a torsion spring, the torsion spring sleeve is disposed on the fixing shaft and includes a first torsion arm and a second torsion arm, and the limiting element and the limiting portion are located between the first torsion arm and the second torsion arm.

Optionally, a plurality of pairs of the first connecting structures are arranged on the body at intervals along the front-rear direction of the body, and each pair of the first connecting structures is symmetrical with respect to the central axis of the body.

Optionally, a pressing member is further disposed on the body, and the pressing member is used for abutting against the upper surface of the transport box to limit the transport box from moving upwards.

Optionally, a first rotor and a second rotor are further disposed on the body, and the first rotor is located in front of the second rotor;

the rotor radius of first rotor with the rotor radius of second rotor is the same, the position of second rotor is higher than the position of first rotor, just the second rotor with first rotor is in the difference in height in the upper and lower direction of organism is 0.15 times rotor radius is to 0.35 times between the rotor radius.

Optionally, unmanned vehicles still includes avionics and flight control device, power battery, motor power and cooling device, avionics and flight control device install in the aircraft nose, power battery, motor power and cooling device install in the fuselage.

Optionally, a first rotor and a second rotor are further disposed on the body, and the first rotor is located in front of the second rotor;

unmanned cargo airplane still includes drive mechanism and motor power, drive mechanism includes first transmission assembly and second transmission assembly, first transmission assembly is located first rotor with just between the second rotor connect respectively at the both ends of first transmission assembly first rotor with the second rotor, first transmission assembly includes diaphragm shaft coupling and a plurality of transmission shaft, every adjacent two pass through diaphragm coupling joint between the transmission shaft, motor power passes through second transmission assembly and arbitrary the transmission shaft is connected.

In the above unmanned transport plane, since at least a part of the lower surface of the body is higher than the lower surface of the head, a gap for accommodating the transport box is formed between the body and the head, and the transport box can be connected through the second connection structure and the first connection structure of the body to be installed in the gap below the body. Because the space has been reserved for the installation of transport case in the below of fuselage, connect in the organism at the transport case after, the transport case is equivalent to inlaying in the organism, compare in traditional mode that hangs the transport case bottom the organism, make the transport case expose in the organism, the transport case that this disclosure imbeds the organism can avoid transport case and the structure in the surrounding environment to collide as far as possible in unmanned cargo airplane's flight process, and because the mounted position of transport case is located the rear of aircraft nose, can reduce the frictional resistance between transport case and the air, improve unmanned cargo airplane's flight stability and duration.

And, because transport case detachably installs in the below of organism, the dismouting mode of transport case and organism is simple, only needs to connect or remove the relation of connection between first connection structure and the second connection structure, can realize being connected or separating between transport case and the organism for unmanned transport aircraft can be applicable to the transport case of quick replacement different grade type.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a perspective view of an unmanned transport plane provided in an exemplary embodiment of the present disclosure, in which a transport box is installed at a machine body;

fig. 2 is a perspective view of an unmanned transport aircraft provided in an exemplary embodiment of the present disclosure, wherein the transport box is not mounted to the airframe;

FIG. 3 is a top view of an unmanned transport aircraft with transport boxes mounted to the airframe provided by an exemplary embodiment of the present disclosure;

FIG. 4 is a side view of an unmanned transport aircraft with transport boxes mounted to the airframe provided by an exemplary embodiment of the present disclosure;

FIG. 5 is an enlarged view of portion "A" of FIG. 4;

FIG. 6 is an enlarged view of portion "B" of FIG. 4;

fig. 7 is a perspective view of a first connection structure and a second connection structure of an unmanned transport aircraft, in which the first connection structure and the second connection structure are connected to each other, provided by an exemplary embodiment of the present disclosure;

fig. 8 is a side view of first and second connection structures of an unmanned aerial vehicle provided in an exemplary embodiment of the present disclosure, wherein the first and second connection structures are not connected to each other;

fig. 9 is a side view of a first connection structure and a second connection structure of an unmanned aerial vehicle provided in an exemplary embodiment of the present disclosure, wherein a hook portion of the first connection structure and a suspension loop of the second connection structure are in a mutually staggered position;

fig. 10 is a side view of first and second connection structures of an unmanned aerial vehicle according to an exemplary embodiment of the present disclosure, wherein the first and second connection structures are connected to each other;

FIG. 11 is a side view of first and second connection structures of an unmanned transport vehicle with a latch assembly in an unlocked position provided in an exemplary embodiment of the present disclosure;

fig. 12 is a schematic view of a transmission, a power motor, a first rotor, and a second rotor of an unmanned transport aircraft provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1-body; 11-a machine head; 12-a fuselage; 121-notch; 13-a first connecting structure; 14-hook structure; 141-a hook; 1411-hook portion; 1412-a limiting part; 15-an elastic member; 151-torsion spring; 1511-first torsion arm; 1512-a second torque arm; 16-a fixed shaft; 17-a locking assembly; 171-a drive member; 172-a stop; 173-rotation stop; 1731-a through hole; 2-a transport box; 21-a second connecting structure; 22-a hanging ring structure; 23-hanging ring; 24-a mounting seat; 3-a pressing piece; 31-a fixed support; 32-torsion bar; 33-a compression section; 41-a first rotor; 42-a second rotor; 5-a transmission mechanism; 51-a first transmission assembly; 511-diaphragm coupling; 512-a drive shaft; 52-a second transmission assembly; 6-power motor.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of the terms of orientation such as "upper, lower, left, right, front, and rear" means upper, lower, left, right, front, and rear as shown in fig. 1, and "inner and outer" means inner and outer of the profile of the relevant component. In addition, it should be noted that terms such as "first", "second", and the like are used for distinguishing one element from another, and have no order or importance. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements.

As shown in fig. 1 to 12, the present disclosure provides an unmanned transport plane, which includes a plane body 1 and a transport box 2, wherein the plane body 1 includes a machine head 11 and a machine body 12, at least a portion of the lower surface of the machine body 12 is higher than the lower surface of the machine head 11, so that a gap 121 for accommodating the transport box 2 is formed between the machine body 12 and the machine head 11, a first connection structure 13 is provided on the plane body 1, a second connection structure 21 is provided on the transport box 2, and the first connection structure 13 is detachably connected with the second connection structure 21.

The machine body 1 can fly alone when the transport box 2 is not connected thereto, and can also fly together with the transport box 2 when the transport box 2 is connected thereto.

In the above-mentioned unmanned aerial vehicle, since at least a portion of the lower surface of the body 12 is higher than the lower surface of the head 11, a gap 121 for accommodating the transport case 2 is formed between the body 12 and the head 11, and the transport case 2 can be connected to the first connecting structure 13 of the body 1 through the second connecting structure 21 so as to be mounted in the gap 121 below the body 12. Because the space has been reserved for transport case 2's installation in the below of fuselage 12, connect in organism 1 back at transport case 2, transport case 2 inlays in organism 1 in other words, compare in traditional mode that hangs the transport case bottom the organism, make the transport case expose in the organism, this open transport case 2 that imbeds organism 1 can avoid transport case 2 and the structure in the surrounding environment to collide as far as possible in unmanned cargo airplane's flight process, and because transport case 2's mounted position is located the rear of aircraft nose 11, can reduce the frictional resistance between transport case 2 and the air, improve unmanned cargo airplane's flight stability and duration.

Moreover, as the transport case 2 is detachably mounted below the machine body 1, the transport case 2 and the machine body 1 are simple to disassemble and assemble, and the transport case 2 and the machine body 1 can be connected or separated only by connecting or disconnecting the first connecting structure 13 and the second connecting structure 21, so that the unmanned transport machine can be suitable for rapidly replacing the transport cases 2 of different types.

Here, the transport case 2 may be a modular container or a pre-loaded container, etc., that is, the transport case 2 may be pre-loaded with goods when not being mounted to the machine body 1, and after the machine body 1 is parked on the ground, the transport case 2 pre-loaded with goods may be directly connected to the first connecting structure 13 of the machine body 1 through the second connecting structure 21, and the transport case 2 pre-loaded with goods may be directly assembled to the machine body 1. Compare in prior art in the unmanned transport plane be in the mode of landing the state and again load with cargo handling to unmanned transport plane, unmanned transport plane in this disclosure allows transport case 2 to load in advance, and unmanned transport plane only needs to connect transport case 2 or dismantle the loading and the uninstallation that can accomplish the goods to save handling time by a wide margin, improve unmanned transport plane's conveying efficiency.

The articles contained in the transport case 2 can be pre-installed or directly integrated with the transport case 2 according to different application scenarios, for example, as an application scenario, the unmanned transport machine can be used for transporting emergency and disaster relief supplies, the transport case 2 can be pre-loaded with emergency and disaster relief supplies, such as food, medicines or life saving equipment, and when the supplies are required to be transported, the machine body 1 can be quickly connected with the loaded transport case 2 and transport the transport case 2 to a designated place. As another application scenario, medical equipment can be preloaded or integrated in the transport box 2, and when the unmanned transport plane needs to perform a rescue task, the transport box 2 with the preloaded or integrated medical equipment can be quickly connected to the machine body 1, so that rescue time is saved.

The transport case 2 can be detachably connected with the machine body 1 through various connection modes, such as clamping, bolt connection, magnetic attraction or hanging connection, which is not limited by the disclosure. To transport case 2 through the mode of magnetism suction connection in the condition of organism 1, first connection structure 13 can be for setting up the electro-magnet on organism 1, and second connection structure 21 can be for the piece is inhaled to the magnetism, and when transport case 2 and organism 1 were connected, the electro-magnet circular telegram and inhale the piece with magnetism suction to make transport case 2 can stable connection in organism 1. And when dismantling transport case 2, only need make the electro-magnet outage, the effect of inhaling is disappeared to the magnetism between electro-magnet and the magnetism piece, and transport case 2 can take place to break away from with organism 1.

For the condition that the transportation box 2 is connected to the machine body 1 by a hanging manner, the first connection structure 13 may be disposed on the machine body 12 or the machine head 11, optionally, the first connection structure 13 is disposed on the machine body 12, the first connection structure 13 is a hook structure 14, the second connection structure 21 may be a hanging ring structure 22, and the hook structure 14 can be hung or released from the hanging ring structure 22.

In order to achieve the hooking and releasing of the hook structure 14 and the hanging ring structure 22, optionally, as shown in fig. 6 to 11, the hanging ring structure 22 may include a hanging ring 23, the hook structure 14 may include a hook 141, an elastic member 15, and a fixing shaft 16, the fixing shaft 16 is fixed to the body 12, wherein the fixing shaft 16 may extend in a front-rear direction or a left-right direction of the unmanned aerial vehicle, the fixing shaft 16 may be directly fixed to the body 12, or may be stably connected to the body 12 through a mounting bracket, which is not specifically limited in this disclosure. The hook 141 is rotatably mounted on the fixed shaft 16, the hook 141 includes a hook portion 1411 for hooking with the hanging ring 23, the hanging ring 23 can push the hook portion 1411 to rotate upwards in the upward moving process, so that the hook portion 1411 and the hanging ring 23 are mutually staggered, and the elastic member 15 is used for applying an elastic force to the hook 141 to enable the hook portion 1411 to rotate downwards when the hook portion 1411 and the hanging ring 23 are mutually staggered, so that the hook portion 1411 can pass through the hanging ring 23 and be hooked with the hanging ring 23. The hook structure 14 further includes a locking assembly 17 for unlockably locking the hook 141, the locking assembly 17 having a locked state in which the locking assembly 17 locks the hook 141 at a position where the hook portion 1411 is hooked with the hanging ring 23, and an unlocked state in which the locking assembly 17 releases the hook 141 so that the hook portion 1411 can be rotated downward and separated from the hanging ring 23 in the process of downward movement of the hanging ring 23.

In the above-described embodiment, when the body 12 of the unmanned transport aircraft and the transport box 2 are connected, the transport box 2 is located below the body 12 and gradually approaches the lower surface of the body 12, as shown in fig. 8, the hook portion 1411 of the hook 141 can be pushed by the hanging ring 23 on the transport box 2 during the upward movement, so that the hook portion 1411 of the hook 141 can be rotated upward around the fixed shaft 16. As shown in fig. 9, when the hook 1411 is rotated upward to a position offset from the hanging ring 23, the elastic member 15 applies an elastic force to the hook 141 to rotate the hook 1411 downward, so that the hook 1411 is rotated downward and passes through the hanging ring 23, thereby achieving the hooking between the hook 141 and the hanging ring 23. At this time, as shown in fig. 10, the locking assembly 17 is in a locked state, and the hook 141 is kept in a position hooked with the hanging ring 23, thereby ensuring that the transport box 2 and the body 12 can be fixedly connected.

When the body 12 of the unmanned transport plane and the transport box 2 are separated from each other, the locking assembly 17 is in an unlocked state, and the transport box 2 can drive the hanging ring 23 to move downwards under the action of gravity, so that the hook portion 1411 of the hook 141 can rotate downwards and be separated from the hanging ring 23, and unloading of the transport box 2 is realized. As an application scenario, when the unmanned transport plane airdrops the transport case 2, the locking assembly 17 is controlled to be in the unlocking state, so that the hook portion 1411 of the hook 141 and the hanging ring 23 can be separated, the transport case 2 is separated from the body 12 under the action of gravity, and can drop from a gap below the body 12, and the unmanned transport plane can airdrop the transport case 2 in the process of sailing. Through the hook structure 14, the hanging ring structure 22 and the locking assembly 17, the automatic connection and separation of the transport box 2 and the machine body 12 can be realized, the loading and unloading time is saved, and the transport efficiency of the unmanned transport machine is improved. Meanwhile, the hook structure 14 and the hanging ring structure 22 are connected stably, separation or shaking is not easy to occur between the transport case 2 and the machine body 12, stability and safety of the transport case 2 in the navigation process of the unmanned transport machine are guaranteed, and separation of the hook and the hanging ring can be achieved due to the fact that the locking assembly 17 is in the unlocking state, so that the separation mode between the transport case 2 and the machine body 12 is simple and rapid, air drop of the unmanned transport machine to the transport case 2 can be achieved, and the unmanned transport machine can be applied to more transport scenes.

The locking assembly 17 can limit the rotation of the hook 141 by abutting or clamping, for example, the locking assembly 17 can include a stop member and a stop driving member, and when the locking assembly 17 is in a locking state, the stop driving member can drive the stop member to stop the hook portion of the hook, so as to limit the downward rotation of the hook portion of the hook. When the locking assembly 17 is in the unlocked state, the stop drive can drive the stop away from the hook, allowing the hook portion of the hook to rotate downward.

As another embodiment, as shown in fig. 10 and 11, the locking assembly 17 may include a driving element 171, a limiting element 172, and a rotation stopping element 173, the limiting element 172 is rotatably connected to the fixed shaft 16, the hook 141 further includes a limiting portion 1412 formed on the hook portion 1411, the limiting portion 1412 rotatably passes through the limiting element 172 and is located on a side of the limiting element 172 away from the hook portion 1411, a through hole 1731 is formed on the rotation stopping element 173, one end of the limiting element 172 far away from the fixed shaft 16 can be inserted into the through hole 1731, and the driving element 171 is connected to the rotation stopping element 173 and is used for driving the rotation stopping element 173 to move.

In the locked state, as shown in fig. 10, the driving element 171 can drive the rotation stopping element 173 to move toward the direction approaching to the limiting element 172 and enable one end of the limiting element 172 far from the fixing shaft 16 to be inserted into the through hole 1731, so as to limit the downward rotation of the limiting element 172, the limiting portion 1412 can rotatably penetrate through the limiting element 172 and is located at one side of the limiting element 172 away from the hook portion 1411, and the limiting portion 1412 can abut against the limiting element 172, so that the hook 141 cannot rotate toward the hook portion 1411, thereby limiting the downward rotation of the hook portion 1411 of the hook 141, and ensuring that the hanging ring 23 can be stably hung on the hook 141. In this state, since the end of the limiting part 1412 facing away from the hook 1411 abuts against the end of the limiting part 172 facing away from the hook 1411, and the end of the limiting part 1412 facing away from the hook 1411 is not limited, the hook 1411 of the hook 141 can still rotate upward, that is, the limiting part 172 does not limit the upward rotation of the hook 1411 of the hook 141, so that the hook 1411 of the hook 141 can be automatically clamped with the suspension loop.

In the unlocked state, as shown in fig. 11, the driving element 171 can drive the rotation stopping element 173 to move towards the direction away from the limiting element 172, so that one end of the limiting element 172 away from the fixed shaft 16 is separated from the through hole 1731, at this time, both the limiting element 172 and the hook 141 can freely rotate around the fixed shaft 16, and under the action of gravity of the transportation box 2, the hook portion 1411 of the hook 141 rotates downward until the hanging ring 23 and the hook 141 are separated from each other, thereby achieving separation of the transportation box 2 and the machine body 1. The driving member 171 may be a linear motor, and an output shaft of the linear motor is connected to the rotation stopping member 173, or the driving member 171 may also be a screw nut driving device, which is not limited in this disclosure.

The elastic element 15 may be an elastic block, a spring, a shrapnel, or the like, alternatively, the elastic element 15 may be a torsion spring 151, the torsion spring 151 is sleeved on the fixed shaft 16 and includes a first torsion arm 1511 and a second torsion arm 1512, and the position-limiting element 172 and the position-limiting portion 1412 are located between the first torsion arm 1511 and the second torsion arm 1512. As shown in fig. 8 and 9, the hanging ring 23 on the transport case 2 can push the hook portion 1411 of the hook 141 to rotate upward during the upward movement, and at the same time, the position-limiting portion 1412 of the hook 141 rotates in a direction away from the position-limiting member 172, so as to push the second torque arm 1512 away from the first torque arm 1511. When the hook 1411 rotates upwards to a position staggered with the hanging ring 23, the second torsion arm 1512 of the torsion spring 151 pushes the stopper 1412 of the hook 141 to approach the first torsion arm 1511, thereby pushing the hook 1411 of the hook 141 to rotate downwards, so that the hook 1411 rotates downwards and penetrates through the hanging ring 23, and the hanging between the hook 141 and the hanging ring 23 is realized.

In order to ensure the connection stability of the transportation box 2 and the machine body 1, a plurality of first connection structures 13 may be disposed on the machine body 12, optionally, as shown in fig. 3, a plurality of pairs of first connection structures 13 disposed at intervals along the front-back direction of the machine body 12 are disposed on the machine body 12, each pair of first connection structures 13 is symmetrical with respect to the central axis of the machine body 12, the transportation box 2 and the machine body 1 can be connected with each other through the plurality of pairs of first connection structures 13 and second connection structures 21, and the connection positions are symmetrical with respect to the central axis of the machine body 12, so that the transportation box 2 is prevented from shaking during the navigation process of the unmanned transportation machine, and the transportation stability and the safety are improved.

In the embodiment of the hook structure 14 and the hanging ring structure 22, in order to prevent the hanging ring 23 from moving upwards and separating from the hook 141, optionally, a pressing member 3 may be further disposed on the body 12, and the pressing member 3 is configured to abut against the upper surface of the transport box 2 to limit the transport box 2 from moving upwards, so as to prevent the hanging ring 23 from separating from the hook 141, and ensure the connection stability of the hook 141 and the hanging ring 23. The pressing member 3 herein may include a fixing bracket 31, a torsion bar 32, and a pressing portion 33 formed below the torsion bar 32, wherein a thread is formed on the torsion bar 32, a threaded hole is formed on the fixing bracket 31, the torsion bar 32 is inserted into the threaded hole, and a relative position between the torsion bar 32 and the fixing bracket 31 can be adjusted by rotating the torsion bar 32, so as to adjust a height of the pressing portion 33 in an upper and lower position, thereby ensuring that the pressing portion 33 can stably abut against the transportation box 2.

In order to realize vertical take-off and landing of the unmanned transport plane, the unmanned transport plane may adopt a tandem twin-rotor unmanned plane, and in order to avoid rotor interference of the twin rotors, as an exemplary embodiment, as shown in fig. 4, a first rotor 41 and a second rotor 42 may be disposed on the machine body 1, and the first rotor 41 is located in front of the second rotor 42; the rotor radius of first rotor 41 is the same as the rotor radius of second rotor 42, the position of second rotor 42 is higher than the position of first rotor 41, and the difference H in height between second rotor 42 and first rotor 41 in the up-down direction of airframe 1 is between 0.15 times rotor radius and 0.35 times rotor radius. In this embodiment, first rotor 41 and second rotor 42 stagger each other in the up-down direction to reduced the aerodynamic interference of first rotor 41 and second rotor 42 in the rotation process, avoided between first rotor 41 and the second rotor 42 owing to wave the produced collision danger of hinge and shimmy hinge, guarantee unmanned cargo airplane security and stability in the navigation.

In the case of an unmanned transport aircraft comprising a plurality of rotors, the power motor 6 of the unmanned transport aircraft is generally required to drive the plurality of rotors through the drive shaft 512, in the embodiment in which airframe 1 includes first rotor 41 and second rotor 42, optionally, as shown in fig. 12, first rotor 41 is located in front of second rotor 42, unmanned aerial vehicle further includes transmission mechanism 5 and power motor 6, transmission mechanism 5 includes first transmission assembly 51 and second transmission assembly 52, first transmission assembly 51 is located between first rotor 41 and second rotor 42 and both ends of first transmission assembly 51 are connected to first rotor 41 and second rotor 42, respectively, first transmission assembly 51 includes diaphragm coupling 511 and a plurality of transmission shafts 512, every two adjacent transmission shafts 512 are connected by diaphragm coupling 511, and power motor 6 is connected to any one transmission shaft 512 by second transmission assembly 52.

In the above embodiment, power motor 6 transmits power to first transmission assembly 51 through second transmission assembly 52, and first transmission assembly 51 transmits power through a plurality of transmission shafts 512 and diaphragm coupling 511, and under the condition of transmitting the same torque, the torsional deformation generated by a single transmission shaft 512 can be reduced, so as to avoid the excessive phase difference between rotation of first rotor 41 and second rotor 42 caused by the torsional deformation of transmission shaft 512, and ensure the operation stability of first rotor 41 and second rotor 42.

Wherein, power motor 6 can be a plurality of, for example, power motor can be two, and two power motors can be distributed in the both sides of second rotor 42, and power motor can drive arbitrary transmission shaft 512 simultaneously through second transmission assembly 52 to drive first rotor 41 and second rotor 42 and rotate.

The unmanned transport plane also comprises structures such as an avionic and flight control device, a power battery, a power motor 6, a cooling device and the like, and because a notch 121 is reserved below the plane body 12 for installing the transport box 2, in order to facilitate the installation of the internal structure of the unmanned transport plane, optionally, the avionic and flight control device can be installed in the plane head 11, and the power battery, the power motor 6 and the cooling device are installed in the plane body 12.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. The utility model provides an unmanned cargo airplane, its characterized in that, includes organism (1) and transport case (2), organism (1) includes aircraft nose (11) and fuselage (12), at least part the lower surface of fuselage (12) is higher than the lower surface of aircraft nose (11), so that fuselage (12) with form between aircraft nose (11) and be used for holding breach (121) of transport case (2), be provided with first connection structure (13) on organism (1), be provided with second connection structure (21) on transport case (2), first connection structure (13) with second connection structure (21) detachably connects.

2. Unmanned aerial vehicle according to claim 1, characterized in that the first connecting structure (13) is arranged on the fuselage (12), the first connecting structure (13) being a hook structure (14), the second connecting structure (21) being a link structure (22), the hook structure (14) being capable of hooking with or releasing the link structure (22).

3. The unmanned aerial vehicle of claim 2,

the hanging ring structure (22) comprises a hanging ring (23);

the hook structure (14) comprises a hook (141), an elastic piece (15) and a fixed shaft (16), the fixed shaft (16) is fixed on the machine body (12), the hook (141) is rotatably mounted on the fixed shaft (16), the hook (141) comprises a hook part (1411) for hooking with the hanging ring (23), the hanging ring (23) can push the hook part (1411) to rotate upwards in the upward moving process so that the hook part (1411) and the hanging ring (23) are staggered with each other, and the elastic piece (15) is used for applying elastic force for enabling the hook part (1411) to rotate downwards to the hook (141) when the hook part (1411) and the hanging ring (23) are staggered with each other so that the hook part (1411) can pass through the hanging ring (23) and hook with the hanging ring (23);

the hook structure (14) further comprises a locking assembly (17) used for locking the hook (141) in an unlocking mode, the locking assembly (17) is in a locking state and an unlocking state, the locking assembly (17) locks the hook (141) at a position enabling the hook portion (1411) to be connected with the hanging ring (23), and the locking assembly (17) releases the hook (141) in the unlocking state, so that the hook portion (1411) can rotate downwards in the downward moving process of the hanging ring (23) and can be separated from the hanging ring (23).

4. The unmanned transport machine of claim 3, wherein the locking assembly (17) comprises a driving member (171), a limiting member (172) and a rotation stopping member (173), the limiting member (172) is rotatably connected to the fixed shaft (16), the hook (141) further comprises a limiting portion (1412) formed on the hook portion (1411), the limiting portion (1412) rotatably penetrates through the limiting member (172) and is located on a side of the limiting member (172) facing away from the hook portion (1411), a through hole (1731) is formed on the rotation stopping member (173), one end of the limiting member (172) far away from the fixed shaft (16) can be inserted into the through hole (1731), and the driving member (171) is connected with the rotation stopping member (173) and is used for driving the rotation stopping member (173) to move;

in the locked state, the driving element (171) drives the rotation stopping element (173) to move towards the direction close to the limiting element (172) and enables one end, far away from the fixed shaft (16), of the limiting element (172) to be inserted into the through hole (1731) so as to limit the downward rotation of the limiting element (172), the limiting part (1412) abuts against the limiting element (172), and in the unlocked state, the driving element (171) drives the rotation stopping element (173) to move towards the direction far away from the limiting element (172) so as to enable one end, far away from the fixed shaft (16), of the limiting element (172) to be separated from the through hole (1731).

5. The unmanned aerial vehicle of claim 4, wherein the elastic member (15) is a torsion spring (151), the torsion spring (151) is sleeved on the fixed shaft (16) and comprises a first torsion arm (1511) and a second torsion arm (1512), and the position limiting member (172) and the position limiting portion (1412) are located between the first torsion arm (1511) and the second torsion arm (1512).

6. An unmanned aerial vehicle according to any of claims 2 to 5, wherein the fuselage (12) is provided with a plurality of pairs of the first connecting structures (13) spaced apart in a fore-and-aft direction of the fuselage (12), each pair of the first connecting structures (13) being symmetrical about a central axis of the fuselage (12).

7. The unmanned transport aircraft of any one of claims 2-5, characterized in that the fuselage (12) is further provided with a pressing member (3), and the pressing member (3) is used for abutting against the upper surface of the transport box (2) so as to limit the transport box (2) from moving upwards.

8. An unmanned aerial vehicle according to any of claims 1-5, wherein the airframe (1) is further provided with a first rotor (41) and a second rotor (42), the first rotor (41) being located forward of the second rotor (42);

the rotor radius of first rotor (41) with the rotor radius of second rotor (42) is the same, the position of second rotor (42) is higher than the position of first rotor (41), just second rotor (42) with first rotor (41) is in the difference in height in the upper and lower direction of organism (1) is 0.15 times rotor radius is to 0.35 times between the rotor radius.

9. An unmanned aerial vehicle according to any of claims 1-5, further comprising an avionics and flight control device mounted in the nose (11), a power battery, a power motor (6) and a cooling device mounted in the fuselage (12).

10. An unmanned aerial vehicle according to any of claims 1-5, wherein the airframe (1) is further provided with a first rotor (41) and a second rotor (42), the first rotor (41) being located forward of the second rotor (42);

unmanned cargo airplane still includes drive mechanism (5) and motor power (6), drive mechanism (5) include first transmission assembly (51) and second transmission assembly (52), first transmission assembly (51) are located first rotor (41) with between second rotor (42) and the both ends of first transmission assembly (51) are connected respectively first rotor (41) with second rotor (42), first transmission assembly (51) include diaphragm coupling (511) and a plurality of transmission shaft (512), every adjacent two connect through diaphragm coupling (511) between transmission shaft (512), motor power (6) pass through second transmission assembly (52) with arbitrary transmission shaft (512) are connected.

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