阅读说明：本技术 一种无人机油箱 (Unmanned aerial vehicle oil tank ) 是由 罗靓 杜洁琼 王丹丹 栾东 程珊珊 王征 杜之亮 于 2020-09-30 设计创作，主要内容包括：本发明公开了一种无人机油箱。通过在油箱安装架安装多个子油箱,能够根据无人机不同续航时间和任务载荷需求而实现无人机油箱的灵活拆卸和换装。另外,子油箱拆卸和换装操作简单,损坏后可直接更换,有效降低成本。(The invention discloses an unmanned aerial vehicle oil tank. Through installing a plurality of sub-oil tanks at the oil tank mounting bracket, can realize the nimble dismantlement and the repacking of unmanned aerial vehicle oil tank according to the different time of endurance of unmanned aerial vehicle and task load demand. In addition, the oil tank is simple to disassemble and replace, and can be directly replaced after being damaged, so that the cost is effectively reduced.)

1. An unmanned aerial vehicle oil tank, comprising:

the oil tank mounting frame (3) is fixedly mounted on the body of the unmanned aerial vehicle and comprises a plurality of mounting positions for mounting the oil tank; and

a plurality of sub-tanks (1, 2) for making up the unmanned aerial vehicle oil tank, wherein each sub-tank is independently mounted or dismounted on one of the plurality of mounting locations, respectively.

2. Unmanned aerial vehicle fuel tank of claim 1, characterized in that the fuel tank mounting bracket (3) comprises: a plurality of pairs of reinforcing frames (6) and a plurality of pairs of reinforcing beams (7), wherein each pair of reinforcing frames (6) and each pair of reinforcing beams (7) jointly enclose a reinforcing enclosure frame (8) to form one of the installation positions.

3. Unmanned aerial vehicle oil tank according to claim 1, characterized in that, the sub-oil tank (1, 2) is internally provided with a plurality of parallel ribs (5) for reinforcing the rigidity of the sub-oil tank (1, 2).

4. The unmanned aerial vehicle oil tank of claim 1, characterized in that a rubber pad (12) is provided between the sub-oil tank (1, 2) and the oil tank mounting bracket (3) for buffering the load transferred to the sub-oil tank (1, 2) by the unmanned aerial vehicle.

5. Unmanned aerial vehicle tank as claimed in claim 1, characterized in that the tank comprises a plurality of locking devices (4), wherein each locking device (4) comprises a bolt (9), an insert (10) and a filler (11), the insert (10) and the filler (11) being mounted inside the tank, the bolt (9) being mounted outside the tank and being configured to exert a corresponding locking torque on the tank.

6. Unmanned aerial vehicle tank of any one of claims 1 to 5, characterized in that the plurality of sub tanks (1, 2) are connected end to end via through holes in the tank mount side wall, wherein an oil through valve is provided between two adjacent sub tanks (1, 2), and for adjacent first and second sub tanks (1, 2) of the plurality of sub tanks (1, 2), the oil through valve opens to reduce oil pressure in the second sub tank (2) when the oil pressure difference between the first sub tank (1) close to the unmanned aerial vehicle engine and the second sub tank (2) far from the engine is higher than the oil pressure threshold of the oil through valve between the first sub tank (1) and the second sub tank (2).

7. The unmanned aerial vehicle tank of claim 6, further comprising,

a plurality of oil pressure detectors respectively installed inside one of the plurality of sub-tanks for detecting oil pressures in the corresponding sub-tanks;

the oil pressure comparator is arranged in an electric control system of the unmanned aerial vehicle and used for receiving oil pressure information from the plurality of oil pressure detectors and comparing oil pressure difference between adjacent first sub oil tanks (1) and adjacent second sub oil tanks (2) in the plurality of sub oil tanks (1, 2); and

and the valve drivers are respectively arranged near the corresponding oil through valves and are used for forcibly opening the oil through valves under the condition that the oil pressure difference obtained by comparison is larger than the oil pressure threshold value of the corresponding oil through valve and the oil through valves are not opened.

8. The unmanned aerial vehicle tank of claim 6,

threshold value P of the oil pressure close to the oil valve of the engine_iThreshold value P of oil pressure of oil passing valve adjacent to and far from engine_i+1Satisfy the following relationships_：

P_i＝K×P_i+1

Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the number of oil through valves, P_iIs the oil pressure threshold of the oil passing valve, and K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1.

9. The unmanned aerial vehicle sump of claim 8,

threshold value P of the oil pressure close to the oil valve of the engine_iThreshold value P of oil pressure of oil passing valve adjacent to and far from engine_i+1Also satisfies the following relationship_：

P_i＝K×M^1/3×P_i+1

Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the sequence of oil through valvesNumber, P_iIs the oil pressure threshold of the oil through valve, K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1, and M is the ratio of the volume of the sub-oil tank corresponding to the ith oil through valve to the volume of the sub-oil tank corresponding to the (i + 1) th oil through valve.

Technical Field

The invention relates to the field of machinery, in particular to an unmanned aerial vehicle oil tank.

Background

A drone is an unmanned aircraft that is operated with a radio remote control device and self-contained program control, or is operated autonomously, either completely or intermittently, by an onboard computer.

Drones tend to be more suitable for tasks that are too "fool, dirty, or dangerous" than are manned aircraft. Unmanned aerial vehicles can be classified into military and civil applications according to the application field. For military use, unmanned aerial vehicles divide into reconnaissance aircraft and target drone. In the civil aspect, the unmanned aerial vehicle + industry application is the real just-needed requirement of the unmanned aerial vehicle, and the application in the fields of aerial photography, agriculture, plant protection, miniature autodyne, express delivery transportation, disaster relief, wild animal observation, infectious disease monitoring, surveying and mapping, news reporting, electric power inspection, disaster relief, movie and television shooting, romantic manufacturing and the like is realized at present, so that the application of the unmanned aerial vehicle is greatly expanded. In the above-mentioned applications, the duration of the flight and the loading of the mission load of the drone are important aspects in evaluating the performance of the drone. The endurance of the drone is limited by the amount of fuel loaded, in short, to increase it requires more fuel to be loaded.

However, to these unmanned aerial vehicle's oil tank, its design adopts monolithic structure oil tank or soft oil tank more, and these oil tanks occupy organism platform's space great, influence the carrying on of bulky load, the unmanned aerial vehicle platform multitask function's of not being convenient for realization.

Disclosure of Invention

The invention aims to provide an unmanned aerial vehicle oil tank which can solve the problem that the oil tank occupies a large platform space of a machine body so as to influence large-volume load loading in the related technology.

According to an aspect of the invention, there is provided a fuel tank for a drone, comprising: the oil tank mounting frame (3) is fixedly mounted on the body of the unmanned aerial vehicle and comprises a plurality of mounting positions for mounting the oil tank; and a plurality of sub-tanks (1, 2) for constituting the unmanned aerial vehicle oil tank, wherein each sub-tank is independently mounted or dismounted on one of the plurality of mounting positions.

Preferably, the tank mount (3) comprises: a plurality of pairs of reinforcing frames (6) and a plurality of pairs of reinforcing beams (7), wherein each pair of reinforcing frames (6) and each pair of reinforcing beams (7) jointly enclose a reinforcing enclosure frame (8) to form one of the installation positions.

Preferably, a plurality of parallel ribs (5) are arranged inside the sub-fuel tanks (1, 2) and used for enhancing the rigidity of the sub-fuel tanks (1, 2).

Preferably, the sub-oil tank (1, 2) and be equipped with rubber pad (12) between oil tank mounting bracket (3) for the buffering unmanned aerial vehicle transmits the load of sub-oil tank (1, 2).

Preferably, the fuel tank comprises a plurality of locking devices (4), wherein each locking device (4) comprises a bolt (9), an insert (10) and a filler (11), the insert (10) and the filler (11) are mounted inside the fuel tank, and the bolt (9) is mounted outside the fuel tank and is used for applying a corresponding locking torque to the fuel tank.

Preferably, a plurality of sub-tanks (1, 2) via the through-hole of oil tank mounting bracket lateral wall and end to end, wherein be equipped with logical oil valve between two adjacent sub-tanks (1, 2), for adjacent first sub-tank (1) and second sub-tank (2) in a plurality of sub-tanks (1, 2), when being close to unmanned aerial vehicle's engine first sub-tank (1) with keep away from the engine oil pressure difference between second sub-tank (2) is higher than first sub-tank (1) with when the oil pressure threshold value of logical oil valve between second sub-tank (2), logical oil valve opens to reduce the oil pressure in the second sub-tank (2).

Preferably, the unmanned aerial vehicle oil tank further comprises a plurality of oil pressure detectors respectively installed inside one of the plurality of oil tanks for detecting the oil pressure in the corresponding oil tank; the oil pressure comparator is arranged in an electric control system of the unmanned aerial vehicle and used for receiving oil pressure information from the plurality of oil pressure detectors and comparing oil pressure difference between adjacent first sub oil tanks (1) and adjacent second sub oil tanks (2) in the plurality of sub oil tanks (1, 2); and the valve drivers are respectively arranged near the corresponding oil through valves and are used for forcibly opening the oil through valves under the condition that the oil pressure difference obtained by comparison is larger than the oil pressure threshold value of the corresponding oil through valve and the oil through valves are not opened.

Preferably, a threshold value P of the oil pressure close to the oil passage valve of said engine_iThreshold value P of oil pressure of oil passing valve adjacent to and far from engine_i+1Satisfy the following relationships_：P_i＝K×P_i+1Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the number of oil through valves, P is_iIs the oil pressure threshold of the oil passing valve, and K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1.

Preferably, a threshold value P of the oil pressure close to the oil passage valve of said engine_iThreshold value P of oil pressure of oil passing valve adjacent to and far from engine_i+1Also satisfies the following relationship_：P_i＝K× M^1/3×P_i+1Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the number of oil through valves, P is_iIs the oil pressure threshold of the oil through valve, K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1, and M is the ratio of the volume of the sub-oil tank corresponding to the ith oil through valve to the volume of the sub-oil tank corresponding to the (i + 1) th oil through valve.

According to another aspect of the invention, there is provided a drone comprising a drone fuel tank according to any one of the above.

According to the invention, the plurality of sub-oil tanks are arranged on the oil tank mounting frame, so that the flexible disassembly and replacement of the oil tank of the unmanned aerial vehicle can be realized according to the carrying requirements of the unmanned aerial vehicle, and the problem that the oil tank occupies a large platform space of a machine body in the related technology is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic illustration of an unmanned engine oil sump according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a reinforcement frame and a reinforcement beam according to an embodiment of the present invention;

FIG. 3 is a schematic view of a locking device according to an embodiment of the invention;

FIG. 4 is a first schematic view of the installation of the sub-tank according to example 1; and

FIG. 5 is a second schematic view of the installation of the sub-tank according to example 2.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The embodiment of the invention provides an unmanned aerial vehicle oil tank. Fig. 1 is a schematic view of an unmanned aerial vehicle oil tank according to an embodiment of the present invention, and as shown in fig. 1, the unmanned aerial vehicle oil tank includes a plurality of sub oil tanks 1, 2 and an oil tank mounting bracket 3, wherein the oil tank mounting bracket 3 is fixedly mounted on a body of the unmanned aerial vehicle and includes a plurality of mounting positions for mounting the oil tanks, and the plurality of sub oil tanks (1, 2) are used for forming the unmanned aerial vehicle oil tank, and each sub oil tank is independently mounted or dismounted on one of the plurality of mounting positions.

In the related art, the oil tank occupies a large platform space of the engine body. In the embodiment of the invention, the plurality of sub oil tanks are arranged on the oil tank mounting frame, so that the flexible disassembly and replacement of the oil tank of the unmanned aerial vehicle can be realized according to different endurance time and task load requirements of the unmanned aerial vehicle. In addition, the oil tank is simple to disassemble and replace, and can be directly replaced after being damaged, so that the cost is effectively reduced.

According to an embodiment of the invention, see fig. 1, the tank 1, 2 is internally provided with a plurality of parallel ribs 5 for stiffening the tank 1, 2. According to the embodiment of the invention, the sub-fuel tanks 1 and 2 are formed by adopting a composite material, and the wall thickness of the fuel tank is designed according to the loading fuel oil quantity and the airplane overload coefficient.

Fig. 2 is a schematic view of a reinforcing frame and a reinforcing beam according to an embodiment of the present invention. As shown in fig. 2, the tank mount 3 includes: a plurality of pairs of reinforcing frames 6 and a plurality of pairs of reinforcing beams 7, wherein each pair of reinforcing frames 6 and each pair of reinforcing beams 7 jointly enclose a reinforcing enclosure frame 8 to form the mounting position. In this embodiment, through the combination of reinforcing frame 6 and reinforcing beam 7, can strengthen the fixed of fuel tank, avoid a plurality of fuel tanks to extrude the influence each other.

FIG. 3 is a schematic view of a locking device according to an embodiment of the invention. As shown in fig. 3, the fuel tank includes a plurality of locking devices 4, wherein each locking device 4 includes a bolt 9, an insert 10 and a filler 11, the insert 10 and the filler 11 are installed inside the fuel tank, and the bolt 9 is installed outside the fuel tank and is used for applying a corresponding locking torque to the fuel tank to ensure the fuel tank is locked. In addition, be equipped with rubber pad 12 between this fuel tank 1, 2 and this fuel tank mounting bracket 3 for the load that this unmanned aerial vehicle transmits this fuel tank 1, 2 is given in the buffering. In this embodiment, the locking device 4 and the rubber pad 12 are combined to enhance the fixation of the sub-tank to the tank mounting bracket, so as to buffer the load transferred to the sub-tank by the unmanned aerial vehicle body and protect the safety of the sub-tank structure.

According to an embodiment of the present invention, the sub-tanks 1, 2 are connected end to end through the through hole of the tank mounting sidewall, wherein an oil passing valve is disposed between two adjacent sub-tanks 1, 2, and for a first sub-tank 1 and a second sub-tank 2 adjacent to each other among the sub-tanks 1, 2, when an oil pressure difference between the first sub-tank 1 close to an engine of the unmanned aerial vehicle and the second sub-tank 2 far from the engine is higher than an oil pressure threshold of the oil passing valve between the first sub-tank 1 and the second sub-tank 2, the oil passing valve is opened to reduce an oil pressure in the second sub-tank 2.

Unmanned aerial vehicles generally require that the amount of each oil tank be kept uniform, keeping the balance of unmanned aerial vehicle flight. Particularly, this embodiment is balanced each sub-tank oil mass through logical oil valve, avoids appearing the too big situation of oil mass difference.

According to an embodiment of the present invention, the unmanned aerial vehicle oil tank further includes a plurality of oil pressure detectors respectively installed inside one of the plurality of oil tanks, for detecting an oil pressure in the corresponding oil tank; the oil pressure comparator is arranged in an electric control system of the unmanned aerial vehicle and used for receiving oil pressure information from the plurality of oil pressure detectors and comparing oil pressure difference between the adjacent first sub oil tank 1 and the second sub oil tank 2 in the plurality of sub oil tanks 1 and 2; and the valve drivers are respectively arranged near the corresponding oil through valves and are used for forcibly opening the oil through valves under the condition that the oil pressure difference obtained by comparison is larger than the oil pressure threshold value of the corresponding oil through valve and the oil through valves are not opened.

In consideration of the aging and damage of the oil through valve, in the present embodiment, if the oil pressure cannot push the oil through valve to open, the oil through valve may also be forcibly opened by the valve driver. The forced opening utilizes an oil pressure detector and an oil pressure comparator, so that the reliability and the stability of the opening of the oil through valve can be ensured.

The embodiment of the invention also provides two setting modes of the oil pressure threshold value so as to further balance the oil quantity of each oil tank through the oil through valve.

In a first mode

A threshold value Pi for the oil pressure close to the oil passage valve of the engine and a threshold value P for the oil pressure of the oil passage valve immediately adjacent to the oil passage valve far from the engine_i+1Satisfy the following relationships_：

P_i＝K×P_i+1

Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the number of oil through valves, P_iIs the oil pressure threshold of the oil passing valve, and K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1.

Mode two

Oil pressure threshold value P close to oil through valve of engine_iThreshold value P of oil pressure of oil passing valve adjacent to and far from engine_i+1Also satisfies the following relationship_：

P_i＝K×M^1/3×P_i+1

Wherein, i is 1, 2, 3 … n-1, n is the number of sub-tanks, n is greater than or equal to 2, i is the number of oil through valves, P_iIs the oil pressure threshold of the oil through valve, K is the proportionality coefficient of the oil pressure threshold and is between 1 and 1.1, and M is the ratio of the volume of the sub-oil tank corresponding to the ith oil through valve to the volume of the sub-oil tank corresponding to the (i + 1) th oil through valve.

It can be seen that the difference between the first and second modes is that the second mode also takes into account this parameter of the volume of the oil tank. Specifically, the volume to the power of one third can accurately correct the oil pressure error caused by the difference of the volumes of the oil tanks.

In order to illustrate the structure of the oil tank, the invention also provides two specific embodiments.

FIG. 4 is a first schematic view of the installation of a sub-tank according to example 1. As shown in FIG. 4, this unmanned aerial vehicle installs a plurality of sub-oil tanks of dismantling, and these sub-oil tanks are installed side by side, through leading to the oil valve to balance each sub-oil tank oil mass, avoid appearing the too big situation of oil mass difference.

FIG. 5 is a second schematic view of the installation of the sub-tank according to example 2. As shown in FIG. 5, this unmanned aerial vehicle installs a large integral oil tank, and this large oil tank can be dismantled and change for a plurality of sub-oil tanks of dismantling, and performance unmanned aerial vehicle multitask advantage satisfies the operation requirement.

The invention also provides the unmanned aerial vehicle. This unmanned aerial vehicle can include the unmanned aerial vehicle oil tank of any kind above-mentioned.

In summary, according to the embodiments of the invention, the plurality of sub-oil tanks are mounted on the oil tank mounting frame, so that the oil tank of the unmanned aerial vehicle can be flexibly detached and replaced according to different endurance time and task load requirements of the unmanned aerial vehicle. In addition, the oil tank is simple to disassemble and replace, and can be directly replaced after being damaged, so that the cost is effectively reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.