阅读说明：本技术 多层多轴无人机 (Multi-layer multi-shaft unmanned aerial vehicle ) 是由 覃松 张春丽 于 2019-09-30 设计创作，主要内容包括：本发明涉及无人机技术领域,公开了一种多层多轴无人机,包括飞行控制系统、定位系统、供电系统和通讯系统。其特征在于：包括主上升机构和副上升机构,主上升机构包括连接架,连接架的端部均固定有由电机驱动的下螺旋桨；副上升机构包括宽度小于连接架宽度的固定架,固定架的顶部固定有由电机驱动的上螺旋桨,上螺旋桨的外周设置有固定在固定架上的上整流罩,上螺旋桨与下螺旋桨错开；连接架与固定架之间设置有若干连接杆,连接杆的端部分别固定在连接架和固定架上。本发明结构简单,利用上层的螺旋桨和下层的螺旋桨能够进行稳定的吸顶或辅助空中平台作业。(The invention relates to the technical field of unmanned aerial vehicles, and discloses a multi-layer multi-axis unmanned aerial vehicle which comprises a flight control system, a positioning system, a power supply system and a communication system. The method is characterized in that: the lifting mechanism comprises a main lifting mechanism and an auxiliary lifting mechanism, wherein the main lifting mechanism comprises a connecting frame, and lower propellers driven by a motor are fixed at the end parts of the connecting frame; the auxiliary lifting mechanism comprises a fixed frame with the width smaller than that of the connecting frame, an upper propeller driven by a motor is fixed at the top of the fixed frame, an upper fairing fixed on the fixed frame is arranged on the periphery of the upper propeller, and the upper propeller and the lower propeller are staggered; a plurality of connecting rods are arranged between the connecting frame and the fixed frame, and the end parts of the connecting rods are respectively fixed on the connecting frame and the fixed frame. The invention has simple structure, and can stably suck the top or assist the aerial platform to work by utilizing the upper propeller and the lower propeller.)

1. Multilayer multiaxis unmanned aerial vehicle, including flight control system, positioning system, power supply system and communication system, its characterized in that: the lifting mechanism comprises a main lifting mechanism and an auxiliary lifting mechanism, wherein the main lifting mechanism comprises a connecting frame, and lower propellers driven by a motor are fixed at the end parts of the connecting frame;

the auxiliary lifting mechanism comprises a fixed frame with the width smaller than that of the connecting frame, an upper propeller driven by a motor is fixed at the top of the fixed frame, an upper fairing fixed on the fixed frame is arranged on the periphery of the upper propeller, and the upper propeller and the lower propeller are staggered;

a plurality of connecting rods are fixed between the connecting frame and the fixed frame.

2. The multi-layer multi-axis drone of claim 1, wherein: and a rubber ring is arranged at the top of the upper fairing.

3. The multi-layer multi-axis drone of claim 2, wherein: the periphery of the lower spiral is fixed with a lower fairing.

4. The multi-layer multi-axis drone of claim 3, wherein: be provided with the stiffener in the radome fairing down, the both ends of stiffener are fixed respectively on radome fairing and link down.

5. The multi-layer multi-axis unmanned aerial vehicle of any one of claims 1-4, wherein: the connecting rod is a telescopic rod.

6. The multi-layer multi-axis drone of claim 5, wherein: the bottom of link is fixed with the fixed plate, and the bottom of fixed plate is fixed with the frame that falls to the ground.

7. The multi-layer multi-axis drone of claim 1, wherein: the periphery of the fixing frame is vertically and slidably connected with a protection shaft, and the bottom of the protection shaft is provided with an elastic part which is abutted against the connecting rod.

8. The multi-layer multi-axis drone of claim 7, wherein: and a protective layer is fixed at the top of the protective shaft.

9. The multi-layer multi-axis drone of claim 1, wherein: a plurality of connecting shafts are arranged between two adjacent connecting rods.

10. The multi-layer multi-axis drone of claim 9, wherein: and a folding mechanism used for folding the lower propeller is arranged on the connecting frame.

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a multilayer multi-axis unmanned aerial vehicle.

Background

There are many structures of houses and bridges where there is decoration, inspection or maintenance work. If the object top plate is too high from the ground, a support and a platform need to be set up for checking or overhauling, or a lifter is adopted. The disadvantages of the erection of the support platform are as follows: 1) the setting period is long; 2) the device can be dismantled after being used once, and the transition cost is high; 3) safety problems are easy to occur; 4) the occupied field is long, and other work development is influenced; disadvantages of using an elevator: 1) the lifting height is limited, the movable type generally rises to 20 meters, and the fixed type can reach 30 meters; 2) people work on the lift platform and are in overhead operation, so that potential safety hazards exist; 3) the foundations of the elevators must be placed in a stable and reliable place, and the use of the elevators is severely limited for outdoor use.

There is also traditional unmanned aerial vehicle, individual layer multiaxis screw unmanned aerial vehicle promptly, utilizes screw lift, withstands the roof, forms the vacuum effect, can stop a period. The problem that exists is that need reduce unmanned aerial vehicle's power and even shut down the rotation of screw, make the vacuum effect lose, unmanned aerial vehicle just can leave the roof, no longer withstands the roof. After the unmanned aerial vehicle leaves the roof, the screw is again accelerated to rotate or the screw is restarted to rotate, so that the lift force is greater than the descending force, and the normal flight of the unmanned aerial vehicle in the air can be guaranteed. The process has high requirements on operation technology, can cause crash accidents without attention, causes property loss, has extremely low reliability, and cannot be used for a stable platform under the condition of roof suction.

Disclosure of Invention

The invention aims to provide a multi-layer multi-axis unmanned aerial vehicle, so as to reduce the probability that the existing unmanned aerial vehicle is easy to crash after being subjected to ceiling suction work.

In order to achieve the purpose, the invention provides the following technical scheme: a multi-layer multi-shaft unmanned aerial vehicle comprises a flight control system, a positioning system, a power supply system and a communication system, and comprises a main lifting mechanism and an auxiliary lifting mechanism, wherein the main lifting mechanism comprises a connecting frame, and lower propellers driven by a motor are fixed at the end parts of the connecting frame;

the auxiliary lifting mechanism comprises a fixed frame with the width smaller than that of the connecting frame, an upper propeller driven by a motor is fixed at the top of the fixed frame, an upper fairing fixed on the fixed frame is arranged on the periphery of the upper propeller, and the upper propeller and the lower propeller are staggered;

a plurality of connecting rods are fixed between the connecting frame and the fixed frame.

The principle and the beneficial effects of the invention are as follows:

(1) the lower screw of main rising mechanism provides main lifting force, main rising mechanism makes unmanned aerial vehicle rise behind the relevant position, form the vacuum between mechanism and the roof through vice rising, the airflow that the screw produced carries out the rectification on the concrete cowling of going up, make and form the vacuum between last screw and the roof, thereby reach the purpose of stably inhaling the top, the power of main rising mechanism is adjusted again, make main rising go up the mechanism configuration and become the holding power to multilayer multiaxis unmanned aerial vehicle, vice rising machine configuration is the suction to the roof, in order to reach multilayer multiaxis unmanned aerial vehicle's stability.

(2) The main lifting mechanism and the auxiliary lifting mechanism are connected through the connecting rod, so that enough space is reserved between the main lifting mechanism and the auxiliary lifting mechanism, and mechanical arms and the like used in operation can be installed in the corresponding space, so that high-altitude work is facilitated.

Compared with the prior art, to sum up, the stability of single-deck propeller structure's unmanned aerial vehicle on the one hand inhaling the top is not enough, and when the weight that bears was too big moreover, was difficult to reach the purpose of inhaling the top, and on the other hand inhales when the top stops, and it requires high to close the back restart to unmanned aerial vehicle, causes unmanned aerial vehicle unnecessary crash easily.

In this scheme, utilize double-deck propeller structure, not only can provide sufficient effort and bear heavier work piece, simultaneously, receive the effect of lower screw and last screw when inhaling the top for multilayer multiaxis unmanned aerial vehicle is whole stable. Secondly, when stopping to inhale the top, when going up the screw promptly and losing, main elevating system can provide corresponding kinetic energy, has reduced the probability that the condition of unmanned aerial vehicle crash takes place.

Further, the upper fairing is provided with a rubber ring.

Has the advantages that: when the auxiliary lifting mechanism carries out top plate ceiling suction, the upper fairing can collide with the top plate to a certain degree, the upper fairing is correspondingly protected through the rubber ring, and the upper fairing can also protect the upper propeller to a certain degree.

Further, a lower fairing is fixed to the periphery of the lower propeller.

Has the advantages that: the lower fairing rectifies the airflow generated by the lower propeller so that the lower propeller can work stably, and meanwhile, the upper propeller and the lower propeller are staggered due to the fact that the upper propeller and the lower propeller are staggered, the upper fairing is matched with the lower fairing, the airflow of the upper propeller and the airflow of the lower propeller are staggered, and the probability of interference between the upper propeller and the lower propeller is reduced.

Furthermore, a reinforcing rod is arranged in the lower fairing, and two ends of the reinforcing rod are respectively fixed on the lower fairing and the connecting frame.

Has the advantages that: the stiffener is to ensure the stability of the lower fairing.

Further, the connecting rod is a telescopic rod.

Has the advantages that: the telescopic link can stretch out and draw back different length, the relative position of adjustable mount and link to screw and lower screw's relevant position in the regulation, and carry out corresponding regulation to the space between the connecting rod, can improve the unprecedented of connecting rod, thereby improve thereby reach the purpose of adjusting the connecting rod according to the demand.

Furthermore, a fixed plate is fixed at the bottom of the connecting frame, and a floor frame is fixed at the bottom of the fixed plate.

Has the advantages that: when multilayer multiaxis unmanned aerial vehicle stop work, the frame of falling to the ground can carry out steady support, and the frame of falling to the ground simultaneously can also regard as the attachment piece, comes to adhere to the work piece.

Further, the periphery of mount vertical sliding connection has the protection axle, and the bottom of protection axle is provided with the elastic component that offsets with the connecting rod.

Has the advantages that: the protection shaft can be correspondingly positioned, and the positioning accuracy during the top suction can be improved. The protection shaft is abutted to the top plate, so that the upper propeller and the upper fairing are prevented from being directly abutted to the top plate, and the probability of damage to the upper propeller and the upper fairing is reduced.

Further, a protective layer is fixed on the top of the protective shaft.

Has the advantages that: the protective layer wraps the protective shaft, and the protective shaft is prevented from damaging the top plate when the protective shaft abuts against the top plate.

Furthermore, a plurality of connecting shafts are arranged between two adjacent connecting rods.

Has the advantages that: set up the connecting axle between the connecting rod, stabilize the connecting rod through the connecting axle, strengthen the stability of connecting rod simultaneously.

Further, a folding mechanism used for folding the lower propeller is arranged on the connecting frame.

Has the advantages that: through folding mechanism, fold lower screw to reduce the area of main rising mechanism, thereby be convenient for transport.

Drawings

Fig. 1 is an isometric view of a multi-layer multi-axis drone in accordance with an embodiment of the present invention;

fig. 2 is a top view of a multi-layer multi-axis drone according to an embodiment of the present invention;

fig. 3 is a front view of a multi-layer multi-axis drone according to an embodiment of the invention;

fig. 4 is a partial cross-sectional view of the guard shaft.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the connecting device comprises a connecting frame 1, a connecting rod 2, a fixing block 21, a protective shaft 3, a rubber layer 31, a fixing frame 4, an upper fairing 5, an upper motor 6, an upper propeller 7, a connecting block 8, a connecting shaft 9, a lower fairing 10, a reinforcing rod 11, a fixing plate 12, a floor stand 13, a lower motor 14, a lower propeller 15, a rotating sheet 16, a fixing nail 161, a rotating shaft 162 and a rotating nail 153.