Patent Description:
Nowadays, unmanned aerial vehicles are slowly coming into view of common consumers, and unmanned aerial vehicles are applied to more and more various industries, such as transportation, patrol security tasks etc. However, most of existing unmanned aerial vehicles can only operate in the air, and can only take off and land on the ground. They cannot realize the functions of floating on a water area, taking off and landing or moving on the water area. Because the existing water unmanned aerial vehicles mainly use an open water area as a taking off and landing site and do not have the function of water collection. Therefore, when carrying out some special tasks, such as fulfilling rescue tasks above the fire site, current UAV uses only non-reusable fire-extinction equipment without water storage equipment installed, and the equipment cannot be reused. At present, most of the UAV cannot perform the rescue task of repeatedly collection water and emission water to extinguish the fire. In addition, the UAV will encounter in severe convective weather, the water flow in the sealed cabin will have a certain impact on the UAV, but the existing UAV does not have measure to slow down the occurrence of this situation. Therefore, it is necessary to provide an improvement to the existing UAV. <CIT> relates to an amphibious fire extinguishing drone with oil-electric hybrid power. <CIT> relates to a fixed-wing unmanned aerial vehicle with a vertical takeoff and landing (VTOL) function. <CIT> relates to a fire protection device installed on a helicopter.

The purpose of this invention is to provide an unmanned aerial vehicle, which can reuse collection and emission equipment to collect water and discharge water, carrying out rescue tasks above the fire site with this equipment. Meanwhile, certain impact on the unmanned aerial vehicle caused by severe shaking of water flow in the sealed cabin due to the conditions of strong convection weather etc., can be mitigated by the unmanned aerial vehicle of this invention. It is also possible to float and move on the water surface of the water when fetching water, so that the unmanned aerial vehicle can be moved to a clean water source if the water is not clean.

To solve the above technical problem, the present invention provides an unmanned aerial vehicle for collection and emission water, including:.

Comparing with prior art, the embodiment of this invention has additionally been equipped with water collection and emission equipment for unmanned aerial vehicle. Water can be placed into unmanned aerial vehicle's sealed cabin by water collection and emission equipment. The unmanned aerial vehicle is also configured with the buoyancy units, which can make the unmanned aerial vehicle float on the water used for water extraction.

In a preferred embodiment, propellers can be connected to the buoyancy unit. Then, the unmanned aerial vehicle can also realize the function of moving on the water used for water extraction by using the propellers connected to the buoyancy units.

In addition, since at least one concave part towards the inner cavity is additionally set in the sealed cabin, it can act as a pseudo wave board to slow down the severe shaking of water flow during the flight of unmanned aerial vehicle.

In a further preferred embodiment, the sealed cabin can be removably connected to the fuselage.

In a further preferred embodiment, the sealed cabin can be provided with a compartment, and the water pump can be arranged inside the compartment of the sealed cabin.

In a further preferred embodiment, the buoyancy units can comprise a first buoyancy unit placed beneath the landing gear; a second buoyancy unit and/ or a third buoyancy unit, the second buoyancy unit and the third buoyancy unit being placed below the vertical fins respectively.

In a further preferred embodiment, the first, second and third buoyancy unit can have a propeller detachably connected to one of their end faces respectively.

In a further preferred embodiment, the first, second and third buoyancy unit can have a propeller detachably connected inside the buoyancy unit respectively.

In a further preferred embodiment, the first, second and third buoyancy units can comprise a hollow structure.

In a further preferred embodiment, the sealed cabin can be a watertight chamber construction.

In a further preferred embodiment, the cross-section of the concave part can be rectangle.

In a further preferred embodiment, the quantity of concave part can be five.

The invention has the beneficial effects that:
The invention provides the reusage water collection and emission equipment for unmanned aerial vehicle additionally. Water can be placed into unmanned aerial vehicle's sealed cabin by water collection and emission equipment. The unmanned aerial vehicle is also configured with the buoyancy units, which can make the unmanned aerial vehicle float on the water used for water extraction.

In a preferred embodiment, propellers can be connected to the buoyancy unit. Then, the unmanned aerial vehicle can also realize the function of moving on water used for water extraction by using the propellers connected to the buoyancy units.

In addition, since at least one concave part towards the inner cavity is additionally set in the sealed cabin, it can act as a fake wave-proof plate to slow down the severe shaking of water flow during the flight of unmanned aerial vehicle.

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the invention more clear, the technical solutions of the embodiments of the invention will be further described in detail in combination with the attached drawings. Obviously, the described embodiments are only part of the embodiments of the invention, not all of them. Based on the embodiment of the invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the invention.

The invention provides the following specific technical solutions:.

The cross-section of the concave part <NUM> is rectangle or circle.

The sealed cabin <NUM> is removably connected to the fuselage <NUM>.

The sealed cabin <NUM> is provided with a compartment, and the water pump is arranged inside the compartment of the sealed cabin <NUM>.

The buoyancy units comprise a first buoyancy unit <NUM> placed beneath the landing gear; a second buoyancy unit <NUM> and a third buoyancy unit <NUM>, the second buoyancy unit <NUM> and the third buoyancy unit <NUM> being placed below the vertical fin <NUM> respectively.

The first <NUM>, second <NUM> and third <NUM> buoyancy unit has a propeller <NUM> detachably connected to one of their end faces respectively.

The first <NUM>, second <NUM> and third <NUM> buoyancy unit has a propeller <NUM> detachably connected inside the buoyancy unit respectively.

The first <NUM>, second <NUM> and third <NUM> buoyancy units comprise a hollow structure.

The sealed cabin <NUM> is a watertight chamber construction.

The quantity of concave part <NUM> is five.

As shown in <FIG>, the invention generally depicts the basic structure of an unmanned aerial vehicle.

On the one hand, the invention provides an unmanned aerial vehicle, which generally includes a fuselage <NUM> and a water collection and emission equipment, which is designed to enable the unmanned aerial vehicle to collect water in open waters and extinguish fire above corresponding fire sites.

In one embodiment, the unmanned aerial vehicle has wings <NUM> symmetrically arranged at both sides of the fuselage <NUM>, which provides the smooth flight for the unmanned aerial vehicle.

In addition, the unmanned aerial vehicle is provided with linear reinforcements <NUM>. The linear reinforcement <NUM> parallel to the central axis of the fuselage <NUM> are arranged on two sides of the fuselage <NUM>. The cross-section of the linear reinforcements <NUM> present a certain shape, for example, it can be round, square, diamond or any other shapes. Moreover, the linear reinforcements <NUM> are made of materials with certain stiffness, such as carbon fiber, which can provide a high enough stiffness for the body of the unmanned aerial vehicle to resist the twisting torque caused by various factors in flight.

In an example helpful in understanding of the invention, the unmanned aerial vehicle can also be provided with linear reinforcements <NUM>, which has a certain curvature and is arranged on both sides of the unmanned aerial vehicle's fuselage <NUM>. The cross-section of the linear reinforcements <NUM> presents a certain shape, for example, it can be round, square, diamond or any other shapes. Furthermore, the linear reinforcements <NUM> are made of materials with certain stiffness, such as carbon fiber, which can provide a high enough stiffness for the fuselage of the unmanned aerial vehicle to resist the twisting torque caused by various factors in flight.

The unmanned aerial vehicle also comprises a landing gear, which is connected to the fuselage <NUM>. Of course, the unmanned aerial vehicle can also comprise a landing gear, which is connected to the front end of the unmanned aerial vehicle's fuselage <NUM>. The end or bottom of the landing gear can be connected with rollers to facilitate the unmanned aerial vehicle taxiing on the ground.

Similarly, the unmanned aerial vehicle also has two vertical fins <NUM>, which are set on the end part of each linear reinforcement <NUM>. The end of the vertical fin <NUM> can be connected with a base of the vertical fin <NUM>, and the base of the vertical fin <NUM> can be connected with a roller to facilitate the unmanned aerial vehicle taxiing on the ground.

The unmanned aerial vehicle comprises the water collection and emission equipment. The equipment includes a sealed cabin <NUM>.

The sealed cabin <NUM> can be a watertight structure, especially in case of severe weather, strong storm and extreme airflow, a good sealing structure can keep water in the sealed cabin <NUM> from leaking during the high altitude flight.

The side wall of the sealed cabin <NUM> in its length direction includes at least one concave part <NUM> towards the direction of the inner cabin. It is used to slow down the swaying of water.

The cross-section of the concave part <NUM> is rectangle or the cross-section of the concave part <NUM> is circle.

The concave part <NUM> towards the direction of the inner cabin is additionally arranged on the side wall of the sealed cabin, which can act as a fake wave-proof plate. The function of the fake wave-proof plate is to slow down the severe shaking of the water flow during the flight of the unmanned aerial vehicle.

The number of concave parts <NUM> can be five, two on one side and three on the opposite side.

Moreover, the water collection and emission equipment includes a water pump (not shown in the figure).

Moreover, the water collection and emission device includes a water collection and emission pipe (not shown in the figure). The water collection and emission pipe has certain flexibility and can be inserted into the sealed cabin <NUM>, so that the water pump can take water through the water collection and emission pipe and inject it into the sealed cabin <NUM>.

The water collection and emission pipe has two functions. On the one hand, when the unmanned aerial vehicle is floating and stopped on the water surface, the water collection and emission pipe inserted into the water surface to take water and put the water into the sealed cabin <NUM>. When the water intake is completed, the unmanned aerial vehicle takes off from the water surface and flies to the fire site. After reaching the upper part of the fire site, it discharges the water through the water collection and emission pipe to extinguish fire and does rescue operations.

It can be understood that the sealed cabin <NUM> is provided with a quick connection device for quick connection to the unmanned aerial vehicle's fuselage <NUM> detachably. For example, the quick connection device can be a hook.

There are several carrying parts under the unmanned aerial vehicle's fuselage <NUM>.

At the same time, the sealed cabin <NUM> is provided with several hook devices corresponding to the carrying parts one by one to realize the quick connection function between the sealed cabin <NUM> and the unmanned aerial vehicle's fuselage <NUM>.

The quick connection device can also be a clamping device. A number of protrusions are arranged under the unmanned aerial vehicle's fuselage <NUM>, and a number of sunken parts corresponding to the protrusions are arranged on the sealed cabin <NUM>, realizing the quick connection between the sealed cabin <NUM> and the unmanned aerial vehicle's fuselage <NUM>.

Of course, whether the sealed cabin <NUM> is connected to the unmanned aerial vehicle's fuselage <NUM> depends on the actual needs. when the unmanned aerial vehicle needs to reach the fire area to carry out fire extinguishing rescue, it is necessary to connect the sealed cabin <NUM> to the unmanned aerial vehicle's fuselage <NUM>, control the unmanned aerial vehicle to fly above the water area where the water needs to be taken, and then use buoyancy units to make the unmanned aerial vehicle float on the water surface, and then the water collection/emission pump starts to work. The water collection/emission pipe inserted into the water surface to pump water, and the water is loaded into the sealed cabin <NUM>. After the water collection, the unmanned aerial vehicle takes off on the water surface and flies to the fire site. After reaching the upper part of the fire site, the water is discharged through the water collection/emission pipe for fire extinguishing rescue.

Besides that, a compartment (not shown in the figure) can be set inside the sealed cabin <NUM>, which has a good sealing performance to facilitate the placement of water pumps in the compartment. Because the compartment has a good sealing performance, the water pumps can operate safely and stably.

The sealed cabin <NUM> can also be a watertight chamber structure.

A good sealing structure can keep the water in the sealed cabin <NUM> from leaking during the high altitude flight of the unmanned aerial vehicle, especially in case of in bad weather, strong storms and extreme airflow.

Other embodiments provide the unmanned aerial vehicles with water collection and emission equipment, which includes a sealed cabin <NUM>. The side wall of the sealed cabin <NUM> in its length direction includes at least one concave part <NUM> towards the direction of the inner cabin, which acts as a fake wave-proof plate to slow down the shaking of water flow.

During the flight of the unmanned aerial vehicle, it will encounter unstable airflow or bad weather, which will bring turbulence to the unmanned aerial vehicle in flight. However, the turbulence of the unmanned aerial vehicle will cause severe shaking to the water flow in the sealed cabin <NUM>. The shaking force generated by the water flow will act on the sealed cabin <NUM>, causing more severe shaking to the unmanned aerial vehicle, therefore, the side wall of the sealed cabin <NUM> in its length direction includes at least one concave part <NUM> towards the inner cavity's direction, in order to balance the flow shaking force caused by the turbulence of the unmanned aerial vehicle.

Moreover, the water collection and emission device includes buoyancy units.

In an embodiment provided in the present invention, the buoyancy unit comprises a first buoyancy unit <NUM>, which is connected below the landing gear. The second buoyancy unit <NUM> and the third buoyancy unit <NUM> are respectively connected below the vertical fins <NUM>. The buoyancy unit can provide buoyancy for the unmanned aerial vehicle to float on the water surface for water intake.

In another embodiment provided in the present invention, one end face of the first buoyancy unit <NUM>, the second buoyancy unit <NUM> and the third buoyancy unit <NUM> can also be detachably connected with a propeller <NUM>.

It should be understood that although the buoyancy unit can provide buoyancy for the unmanned aerial vehicle to float on the water surface for water intake, it cannot move the unmanned aerial vehicle over the water surface. By setting propeller <NUM> at the end surface of each buoyancy unit, when the water is not clean at one place, the unmanned aerial vehicle can sway to the area with cleaner water for water intake.

In other embodiments provided in this invention, the first buoyancy unit <NUM>, the second buoyancy unit <NUM> and the third buoyancy unit <NUM> are detachably connected with a propeller <NUM> inside each buoyancy unit. Certainly, each buoyancy unit can also comprise a hollow structure, so that the propeller <NUM> can be placed inside each buoyancy unit, which can provide more thrust for the unmanned aerial vehicle.

The above describes the implementation mode of the invention through specific embodiments. Those skilled in the art can easily understand the other advantages and effects of the invention from the contents disclosed in the description. The invention can also be implemented or applied in different specific embodiments, and various details in the specification can also be modified or changed based on different views and invention systems without departing from the purpose of the invention.

With reference to the drawings, the present invention gives a detailed description of the embodiments of the invention, so that those skilled in the art to which the present invention belongs can easily implement it. The invention can be embodied in a variety of different forms, and is not limited to the embodiments described herein.

In order to clearly explain the invention, devices irrelevant to the description are omitted, and the same reference symbols are given to the same or similar constituent elements throughout the description.

In the entire description, when a device is said to be "connected" with another device, this includes not only the case of "direct connection", but also the case of "indirect connection" when other elements are placed between them. In addition, when a device "includes" certain constituent elements, as long as there is no record to the contrary, it does not exclude other constituent elements, but means that it can also include other constituent elements.

When a device is said to be "above" another device, it can be directly on the other device, but it can also be accompanied by other devices. When a device is "directly" on another device, it is not accompanied by other devices.

Although in some instances the terms first, second, and the like are used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one component from another. For example, the first interface and the second interface are described. Furthermore, as used herein, the singular forms "one", "a" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the existence of the described features, steps, operations, elements, components, items, categories, and/or groups, but do not exclude the existence, presence, or addition of one or more other features, steps, operations, elements, components, items, categories, and/or groups. The terms "or" and "and/or" as used herein are interpreted to be inclusive or to mean any one or any combination thereof. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition occur only when combinations of components, functions, steps, or operations are inherently mutually exclusive in some ways.

The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the invention. The singular form used here also includes the plural form, as long as the statement does not clearly express the opposite meaning. The meaning of "including" used in the specification is to specify a particular characteristics, regions, integers, steps, operations, elements and/or components, not to exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and/or components.

The terms indicating relative space such as "down" and "up" can be used to easily explain the relationship between one device illustrated in the drawings and another device. This term refers not only in the sense referred to in the drawings, but also in other senses or operations of devices in use. For example, if the device in the drawing is turned over, a device that was described as "under" other devices is described as "on" other devices. Therefore, the so-called "under" exemplary terms all include upper and lower. The device can be rotated by <NUM> °or other angles, and the terms representing relative space are also interpreted accordingly.

Although they are not defined differently, they include technical terms and scientific terms used herein. All terms have the same meaning as those generally understood by those skilled in the technical field to which the invention belongs. The terms defined in commonly used dictionaries are added with meanings consistent with relevant technical literature and current prompts. As long as they are not defined, they shall not be over interpreted in a desirable or very formulaic meanings.

Claim 1:
An unmanned aerial vehicle, comprising:
a fuselage (<NUM>);
wings (<NUM>), which are symmetrically arranged on two sides of the fuselage (<NUM>) along the central axis of the fuselage (<NUM>);
linear reinforcements (<NUM>), the linear reinforcements (<NUM>) parallel to the central axis of the fuselage (<NUM>) are arranged on two sides of the fuselage (<NUM>);
a landing gear, connected to the fuselage (<NUM>);
two vertical fins (<NUM>), one vertical fin (<NUM>) is arranged at the end of each linear reinforcement (<NUM>) of the unmanned aerial vehicle;
a water collection and emission equipment, comprising a sealed cabin (<NUM>) connected to the fuselage (<NUM>);
the water collection and emission equipment further comprises buoyancy units (<NUM>, <NUM>, <NUM>) connected to the fuselage (<NUM>);
the water collection and emission equipment further comprises a water pump arranged in the sealed cabin (<NUM>);
the water collection and emission equipment further comprises a water collection and emission pipe connected with the water pump;
a side wall of the sealed cabin (<NUM>) in its length direction comprises at least one concave part (<NUM>), which is used for slowing down the swaying of the water.