JPH08163946A - Apparatus for spraying chemical by unmanned helicopter - Google Patents

Abstract

PURPOSE: To simplify the preparation and arrangement of chemicals spraying work with an apparatus for spraying chemicals by an unmanned helicopter by carrying out the attaching and detaching work of a chemical tank for holding chemicals to the helicopter main body simultaneously with the connection and disconnection work of the chemical tank and a chemicals supplying means for supplying the chemicals to a spraying means. CONSTITUTION: This chemicals spraying apparatus mounted on a helicopter main body 1 operated by remote operation is composed of a tank having a chemicals discharging part 23, a spraying means 6 for spraying chemical liquid supplied from the tank 2 and supplying means 3, 4, 5 to supply the chemical liquid from the tank 2 to the spraying means 6 through a chemicals introducing part 3 placed at the upstream side. The tank 2 is detachably attached to the helicopter main body 1 through an engaging part 16 attached to the helicopter main body 1 and the chemicals discharging part 23 of the tank 2 is connected to the chemicals introducing part 3 of the supplying means when the tank 2 is engaged with the engaging part 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying apparatus for spraying chemicals such as pesticides in the air by an unmanned helicopter operated by radio remote control.

[0002]

2. Description of the Related Art When a large-scale spray of a pesticide such as a pest control agent is applied to a large area of forest or farmland, it is said that the agent is sprayed in the air using a small airplane or helicopter on which the operator is aboard. However, such aerial spraying of drugs by manned air vehicles is difficult to apply to small areas, and the charter fees for airplanes are also expensive. There has been conventionally known a technique in which a radio-controlled helicopter that can be used is used, and a drug spraying device is attached to the radio-controlled helicopter to remotely spray the drug in the air. (See Japanese Utility Model Publication No. 55-27189, Japanese Utility Model Publication No. 2-28762, etc.)

[0003]

By the way, in any of the above-mentioned conventional chemical spraying devices using unmanned helicopters, the work of mounting the tank filled with the chemicals on the machine body and Since the work of connecting the medicine discharging portion of the tank to the feeding means for feeding to the spraying means is separately performed, the preparatory work prior to the chemical spraying is complicated and troublesome.

An object of the present invention is to eliminate the above-mentioned inconvenience of the conventional chemical spraying device using an unmanned helicopter, and more specifically, the main body of the chemical tank for filling the chemicals. Can be attached to and detached from, and connection and disconnection of the medicine feeding means for feeding the medicine to the spraying means and the medicine tank can be performed at the same time, and the preparation and organizing work for medicine spraying can be simplified. It is an object of the present invention to provide a drug spraying device using an unmanned helicopter.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the object, the present invention relates to a body of a helicopter operated by remote control as described in claim 1 above. , A tank provided with a medicine discharge part, a spraying means for spraying the medicine sent from the tank, and a feeding means for sending the medicine from the tank to the spraying means through the medicine introducing part provided at the upstream end. In a drug spraying device provided with a feeding means, the tank is detachably attached to the machine body via a locking part attached to the machine body side, and the tank is locked to the locking part. In this case, the medicine discharging portion of the tank is connected to the medicine introducing portion of the feeding means.

Further, in the chemical spraying device by the unmanned helicopter according to the above-mentioned claim 1, the above-mentioned claim 2
As described in (1), the engaging portion that engages with the locking portion on the machine body side is provided on the side surface of the tank, and the abutting portion that abuts the tank side surface below the engaging portion is the engagement on the machine body side. It is characterized in that it is provided below the stopper, and further, in such a chemical spraying device by an unmanned helicopter, as described in the above-mentioned claim 3, the tanks are provided on both sides of the machine body. Are arranged in a pair, and contact portions to the side surface of the tank are respectively formed at both ends of the frame member extending below the machine body in the width direction across the machine body.

Further, in the chemical spraying device by the unmanned helicopter according to the above-mentioned claim 1, the above-mentioned claim 4
As described above, the tank is attached / detached in the up / down direction, and the medicine introducing portion provided at the upstream end of the feeding means is
The container has a bowl-shaped receiving portion that opens upward, and the medicine discharge portion provided in the tank is a spout that projects downward from the tank and can be inserted into the bowl-shaped receiving portion. The introduction part is provided with a valve element so that the spout is opened when the spout is fitted in the receiving part and is closed when the spout is disengaged from the receiving part. .

Further, in the chemical spraying device by the unmanned helicopter according to the above-mentioned claim 1, the above-mentioned claim 5
As described in (1), a lock mechanism is provided for locking the tank to the locking portion on the machine body side and automatically locking the locked state at the same time. In such a chemical spraying device using an unmanned helicopter, as described in claim 6, a grip portion of a release lever for unlocking the lock mechanism is arranged at or near a handle portion formed in the tank. It is characterized by being present.

[0009]

[Operation] With the structure as set forth in claim 1 above, it is only necessary to perform one simple operation of locking the tank to the locking portion, and at the same time as mounting the tank on the body of the body, The connection between the discharge part and the drug introduction part of the feeding means is automatically completed, and by simply removing the tank from the locking part, at the same time as separating the tank from the machine body, The connection of the medicine introducing section of the feeding means is automatically released.

According to the structure as described in claim 2, the tank is engaged only by performing the work at one place where the engaging portion on the machine body side and the engaging portion on the side surface of the tank are engaged. It will be supported in a stable state with respect to the machine body at two points, the stop part and the contact part. Moreover, even if the dimensional accuracy between the locking part and the contact part on the machine body side is somewhat poor, the tank There is no problem in wearing.

Further, according to the structure described in claim 3, the left and right parts are provided with respect to the abutting portions formed at both ends of the frame member arranged so as to cross the machine body in the width direction. Since the loads of approximately the same size from the tank are applied in the opposite directions, other frame members for connecting the frame member to the body of the machine or those by simply receiving a simple compressive load in the axial direction of the frame member. The load of the tank hardly acts on the connecting part of.

According to the structure as described in claim 4, the heavy tank filled with the medicine is moved only in the direction in which gravity acts (vertical direction), and the tank is locked on the main body side. When the tank is attached to and detached from the body of the machine, the medicine discharge portion of the tank is automatically opened and closed by the valve body.

When the tank is detached from the body of the machine, the tank is detached in the vertical direction and the bowl-shaped receiving portion is located below, so that a small amount of medicine leaks from the medicine discharge portion of the tank. In some cases, the leaked medicine is caught by the bowl-shaped receiving portion and does not fall onto the ground or the like.

Further, when the tank is detached from the machine body, the valve body provided in the medicine introducing portion of the feeding means is automatically closed, so that only one of the tanks disposed on the left and right of the machine body is closed. Even if the medicine remains in the other tank when it is removed, the medicine is introduced from the medicine introduction part of the feeding means on the side where the tank is removed to the other tank through the feeding means that connects the tanks on both sides of the machine body. The remaining drug will not leak out.

According to the structure described in claim 5, the locking state of the tank with respect to the main body of the machine is automatically locked only by locking the tank with the locking portion of the main body of the machine. Further, according to the configuration described in claim 6, when the tank is removed by holding the handle portion,
When the grips of the release lever are simultaneously gripped and grasped, the lock in the tank locked state is released.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a chemical spraying device using an unmanned helicopter according to the present invention will be described below with reference to the drawings.

1 and 2 show the whole of an unmanned helicopter in which the chemical spraying device of this embodiment is installed. The body 1 of the helicopter is a conventional model radio-controlled helicopter operated by remote control by radio. Alternatively, although not shown, although not shown, the main body 1 has a built-in controller and engine for freely controlling and flying the main body by guiding a transmitter from the ground. A controller and a power supply for operating the chemical spraying device attached to the machine body 1 by guiding a transmitter from the ground are incorporated.

A pair of medicine tanks 2 and 2 for filling the medicine as a device for spraying the medicine to the body 1 of such a helicopter are provided on both sides of the body 1, A pump 4 for delivering the medicine from inside 2 via the medicine introducing section 3 is arranged below the machine body 1, and supplies the medicine discharged from the pump 4 from both lower sides of the machine body 1 to the outside. Supply pipes 5, 5 for
Is extended, and at the tip of each of the supply pipes 5 and 5,
Atomizers (sprayers) 6, 6 for diffusing and spraying the drug delivered by the delivery pipe 5 are provided.

Drug tank 2, drug introducing section 3, pump 4,
The configuration for mounting each component such as the feeding pipe 5, the atomizer 6 and the like to the machine body 1 and the layout relationship of each component will be described below.

As shown in FIGS. 2 to 4, a pair of connecting stays 11, 11 are provided on the lower surface of the machine body 1 with bolts 12.
A component mounting frame 1 which is detachably fixed by a and 12b and which is used to mount the drug introduction part 3 and the pump 4
3, and a feed pipe support frame 14 for supporting the feed pipes 5 and 5 are integrally fixed to the connecting stays 11 and 11.

In this embodiment, the component mounting frame 1
3 is directly fixed to the connecting stay 11 by welding, and the feed pipe support frame 14 is connected to the connecting stay 11 by welding.
It is indirectly fixed to the connecting stay 11 via the support portion 15b fixed to a by a bolt or the like.

The frames 13 and 14 integrally fixed to the removable connecting stays 11 and 11 on the lower surface of the machine body 1 are in the direction orthogonal to the connecting stays 11 and 11 and are both machine structures. It extends in the width direction of the machine body so as to traverse the machine body below the main body 1, and the supply pipes 5 and 5 are supported on the supply pipe support frame 14 by support portions 15b near both ends thereof. ing.

A pump 4 is fixed to the component mounting frame 13 near its center through a bracket, and contact portions 13a for contacting side surfaces of the tank 2 are formed at both ends thereof. The drug introduction part 3 for feeding the drug from the tank 2 to the suction port 4a of the pump 4 in a state where the parts are attached to the parts mounting frame 13 and branched downward from both ends.
Are integrally attached to the frame 13.

As described above, the medicine introducing portion 3 is attached to each of the frames 13 and 14 integrally fixed to the connecting stay 11.
The pump 4, the delivery pipe 5, and the like are attached, and the atomizer 6 is fixedly installed at the tip of the delivery pipe 5, so that the delivery means and the delivery agent for the drug including the drug introduction part 3, the pump 4, and the delivery pipe 5 are provided. As shown in FIG. 4, the atomizer 6 which is a spraying means of the above is integrated as one unit in a state in which it can be integrally attached / detached to / from the lower surface of the main body 1 of the connecting stay 11 by the bolts 12a and 12b. Has been.

In such a unit, each drug introducing portion 3, 3 and the suction port 4a of the pump 4 are connected by a tube 31, and the discharge port 4b of the pump 4 and each of the supply pipes 5, 5 are connected.
Is connected by a tube 32, and the wiring 33 from the motor in the pump 4 and the wiring 34 extending from the motor 6a for driving the atomizer 6 through the feed pipe 5 are The controller and the power source in the main body 1 can be collectively connected by the coupler 35.

As described above, the medicine introducing section 3, the pump 4, the feeding tube 5, the atomizer 6, the tubes 31, 32, the wires 33, 34, etc. are integrally detachable as a unit, and the main body of the machine body is attached. 1, the locking frames 16 for locking the drug tank 2 are provided on both side surfaces of the machine body 1 as shown in FIG. It is fixed to the machine body 1 via 17a, 17b and 17c, respectively.

As shown in FIGS. 5 and 6, the tank 2 locked by the locking frame 16 is provided with a handle portion 21 for carrying, and a lid 22 is provided at an upper opening for filling a drug. The bottom surface is provided with a medicine discharge portion 23, and the side surface thereof is provided with an engagement portion 24 that can be engaged with and disengaged from the locking frame 16 in the vertical direction. The lower side surface is a flat contact surface 2a.

When the tank 2 is locked to the locking frame 16 from above, at the same time, when the tank 2 is locked to the locking frame 16, the chemical discharge portion 23 on the bottom surface of the tank is attached to the component mounting frame 13. It has such a positional relationship that it is connected from above to the medicine introducing section 3 attached to the.

Further, as a lock mechanism for locking the locked state of the tank, a locking hole 18 is provided on the locking frame 16 side, and a locking hook 25 on the tank 2 side.
Is pivoted above the engaging portion 24, and further, a releasing operation lever 26 for moving the locking hook 25 in the releasing direction extends upward, and its grasping portion 27 is near the handle portion 21 of the tank. It is located in.

In this embodiment, the locking hook 25 is
As shown in FIG. 5, a pair of hooks 25, 25 are integrally formed in a state of being bilaterally symmetric with respect to the central position of the tank 2, and one of them is formed in the locking hole portion 18. It is structured to engage with each other.

With such a structure, due to the mounting position of the mounting stay 17b to the machine body 1, the position of the locking hole portion 18 is deviated from the center of gravity of the machine body 1 and the center of gravity of the tank 2 is changed. When it is mounted according to the center of gravity of the machine body 1, the locking hole portion 18 does not correspond to the central position of the tank 2, so the locking hook 25 is displaced from the central position of the tank 2 and aligned with the locking hole portion 18. This is to ensure compatibility between the left and right tanks 2 and 2 by providing the locking hook 25 at a position corresponding to the locking hole 18 regardless of which side the tank 2 is attached to. .

This lock mechanism is provided with a locking hook 25 on the tank side when the tank 2 is locked by the locking frame 16.
Any of 25 is automatically engaged with the locking hole portion 18 on the locking frame side, and by pulling the grip portion 27 of the operation lever 26 arranged in the vicinity of the handle portion 21 of the tank, The engagement state between the stop hook 25 and the locking hole 18 is released.

By the way, regarding the structure of the medicine introducing portion 3 attached to the component mounting frame 13 and the medicine discharging portion 23 formed on the bottom surface of the tank 2, as shown in FIG. Is a bowl-shaped receiving portion 3a that opens upward
And a cylindrical spout 23a that projects downward and is fitted into the bowl-shaped receiving portion 3a in the medicine discharge portion 23.
Is screwed on.

Then, in the medicine discharge section 23, the spout 2
A valve body 23c for closing an opening 23b opened at the tip of 3a by a pressing force of a spring is provided, and the medicine introducing portion 3 has an opening 3b opened at the bottom of the bowl-shaped receiving portion 3a.
Is provided with a valve body 3c that is closed by a pressing force of a spring, and the valve body 3c is integrally formed with a rod-shaped portion that projects into the bowl-shaped receiving portion 3a.

The medicine discharging section 23 and the medicine introducing section 3 as described above.
According to this, in the state where they are not connected, as shown in FIG.
Since it is closed by c and 23c, the medicine does not leak from the portion.

With respect to the chemical spraying device using the unmanned helicopter of the present embodiment having the above-mentioned structure, first, the frames 14 and 1 are attached to the body 1 of the helicopter.
A unit in which each part such as the chemical introduction part 3, the pump 4, the feeding pipe 5, the atomizer 6 and the like is assembled to the frame structure composed of the connecting stay 11 and the connecting stay 11, and the connecting stay 13 is attached to the body by bolts 12a and 12b. It is attached by screwing to the lower surface of the main body 1, and each wiring 33, 34 is connected to the body main body 1 side by a coupler 35.

Then, the tanks 2 filled with the medicines are locked to the locking frames 16 fixed to both side surfaces of the machine body 1 by the engaging portions 24 provided on the side surfaces of the tank 2. .

Then, as shown in FIG. 7, the tank 2
Side locking hook 25 is the locking hole 1 on the locking frame 16 side.
8 is automatically engaged to lock the locked state, the contact portions 13a formed at both ends of the component mounting frame 13 contact the contact surfaces 2a of the tank 2, and the tank 2 is in a stable state. It is mounted on the machine body 1 with the component mounting frame 1
The spout 23a of the medicine discharging portion 23 of the tank is automatically fitted into the receiving portion 3a of the medicine introducing portion 3 attached to the tank 3.

Then, the rod-shaped portion of the valve body 3c of the medicine introducing portion 3 is pressed against the valve body 23c of the medicine discharging portion 23 to resist the pressing force of each spring and the respective valve bodies 3c and 23c.
Moves in a direction away from the respective openings 3b and 23b, and the medicine discharge section 23 and the medicine introducing section 3 are opened so that the medicine can pass therethrough.

After the tank 2 filled with the medicine is attached to the machine body 1 as described above, when the pump 4 and the atomizer 6 are driven by remote control while flying the helicopter under the guidance of the transmitter, the inside of the tank 2 Of the drug is sucked into the pump 4 through the drug discharge part 23, the drug introducing part 3 and the tube 31, and is discharged from the pump 4 to generate the tube 32,
It is sent to the atomizer 6 through the feeding pipe 5, and is sprayed from the atomizer 6 into the air by the rotation of the motor 6a.

After the spraying of the chemicals is completed and the helicopter is landed, the handle 21 of the tank 2 is grasped together with the grip 27 of the release operation lever 26 of the lock mechanism and the tank 2 is lifted up. Stop hook 25 and locking hole 1
8 is released, and the engaging portion 2 of the tank 2 is released.
4 and the locking frame 16 are disengaged, and at the same time, the connection between the medicine discharge portion 23 of the tank 2 and the medicine introduction portion 3 is automatically released, and the emptied tank 2 is removed from the machine body 1.

According to the drug spraying device by the unmanned helicopter of the present embodiment as described above, the tank 2 is attached to and detached from the locking frame 16, and at the same time, the drug discharge part 23 of the tank and the drug of the drug feeding means. Since the introduction unit 3 is automatically connected and disconnected, the preparation work before the spraying of the medicine and the organizing work after the spraying of the medicine can be performed by a simple operation in a short time.

Further, by simply moving the heavy tank 2 filled with the medicine in the direction in which gravity acts (vertical direction), the mounting work of the tank 2 can be performed efficiently and relatively easily, and the locking frame 16 is also provided. The tank 2 can be supported in a stable state with respect to the machine body 1 at the two positions of the engaging portion 24 and the abutting portion 13a simply by locking the tank 2 to the engaging portion 24 of the tank. Even if the dimensional accuracy of the contact portion 13a on the machine body 1 side is somewhat poor, there is no particular problem in mounting the tank 2.

Further, when the tank 2 is mounted, the loads of the left and right tanks 2, 2 having substantially the same size are applied to both ends of the component mounting frame 13 so as to face each other, and at the time of spraying the drug, the left and right tanks 2, 2. Via the pump 4 common to 2
Since the chemicals in both tanks 2 and 2 are used equally, only the component mounting frame 13 in the frame structure installed below the machine body 1 receives a simple compressive load in the axial direction in a well-balanced manner. Since the load for supporting the tank 2 hardly acts on the other frame members and their connecting portions, the airframe structure including the frame 13 should be simple and lightweight without requiring a strong connecting structure. You can

Further, when the tank 2 is engaged with the locking frame 16, the locked state is automatically locked, so that the mounted tank 2 does not come off on the way, and the tank 2 When releasing the vehicle from the machine body 1, the release operation lever 26 together with the handle 21 of the tank 2
The lock can be released at the same time when the tank 2 is removed by simply gripping the grip portion 27.

When the tank 2 is attached to or detached from the machine body 1, the valve body 23c provided in the medicine discharge section 23 of the tank 2 or the valve body 3c provided in the medicine introduction section 3 is automatically operated. Since it is opened and closed, it is not necessary to separately provide an opening / closing means such as a cock at the portion, and when the tank 2 is detached from the machine body 1, the tank 2 is moved in the vertical direction and the bowl-shaped receiving member is moved downward. Since the portion 3a is located, even if a small amount of medicine may leak from the medicine discharge portion 23 of the tank 2, the leaked medicine is in a bowl-shaped receiving portion 3a.
It will not be caught by and fall to the ground.

When the tank 2 is detached from the machine body 1, the valve body 3c of the medicine introducing section 3 is automatically closed, so that one of the tanks 2 and 2 arranged on the left and right of the machine body 1 Even if the medicine remains in the other tank when only the medicine is removed, the medicine introducing portion 3 on the side where the tank is removed is formed even though the medicine introducing portions 3 and 3 on both sides are connected by the tube 31. The drug remaining in the other tank will not leak out of the tank.

Further, in the present embodiment, the medicine introducing portion 3, the pump 4, the feeding pipe 5, the atomizer 6 and the like are connected to the stay 1 for connection.
The part 1 is integrated as one unit that can be attached to and detached from the machine body 1, and the wirings 33 and 34 of each component are also collectively connected to the machine body 1 side by the coupler 35. On the other hand, compared to the case where each component is individually attached and detached and wired, the time required for the work of mounting the chemical spraying device on the machine body 1 is significantly shortened, and the chemical spraying device attached to the machine body 1 has different specifications. It is very convenient when exchanging with.

[0049]

According to the drug spraying device for an unmanned helicopter of the present invention as described above, the work of attaching and removing the drug tank filled with the drug to and from the main body of the machine and the drug feeding means for feeding the drug to the spraying means. Connecting and disconnecting the medicine introduction part and the medicine discharge part of the medicine tank can be performed at the same time with one simple operation, and the preparation work for the drug spraying and the rearranging work after the drug spraying are significantly simplified. Can be converted.

With the structure described in claim 2, the tank can be supported in a stable state by a simple operation, and even if the dimensional accuracy between the frames installed on the machine body side is somewhat poor, the tank Does not cause any trouble in mounting, and the structure described in claim 3 makes it possible to make the frame structure installed on the machine body side simple and lightweight.

Further, according to the structure described in claim 4, it is possible to easily carry out the mounting work of the tank, and it is not necessary to separately provide an opening / closing means such as a cock in the medicine discharging portion of the tank, and the tank is removed. Sometimes the drug leaked from the drug discharge part of the tank does not drop to the ground, and when one tank is removed, the drug remaining in the other tank leaks out from the drug delivery means on the removed side. There is no such thing.

Further, according to the structure described in claim 5, the tank is securely attached to the machine body,
Further, with the configuration as described in claim 6 above,
It is possible to easily unlock the locked state of the tank at the same time when the tank is removed.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a chemical spraying device by an unmanned helicopter of the present invention.

FIG. 2 is a bottom view showing the embodiment shown in FIG. 1 as viewed from below.

FIG. 3 is a partially omitted front view of the embodiment shown in FIG. 1 as viewed from the front.

FIG. 4 is an enlarged side view of essential parts showing a state in which the tank of the embodiment shown in FIG. 1 is removed.

5 is a side view showing a mounting side of the tank of the embodiment shown in FIG. 1 to a machine body.

FIG. 6 is a front view showing the tank and its mounting member of the embodiment shown in FIG. 1 when the tank is detached.

FIG. 7 is a front view of the tank and its mounting member of the embodiment shown in FIG. 1 when the tank is mounted.

[Explanation of symbols]

 1 Airframe main body (for unmanned helicopter) 2 (drug) tank 3 (drug feed means) drug introduction part 3a (drug introduction part) bowl-shaped receiving part 3c (drug introduction part) valve body 4 pump (feeding) Means) 5 Feeding pipe (Feeding means) 6 Atomizer (Spraying means) 13 Component mounting frame (Frame member) 13a Abutting part 16 Locking frame (Locking part of tank) 18 Locking hole (locking mechanism) 21 (Tank) grip 23 (Tank) drug discharge 23a (Drug discharge) convex spout 23c (Drug discharge) valve body 25 Locking hook (lock mechanism) 27 (Lock release lever) grip Department

Claims (6)

[Claims] 1. A tank provided with a medicine discharge part, a spraying means for spraying the medicine delivered from the tank, and an upstream end provided on a body of a helicopter operated by remote control. In a drug spraying device in which a feeding means for sending a drug from a tank to a spraying device is provided through a drug introducing part, the tank is attached to the machine body via a locking part attached to the machine body side. The unmanned helicopter is detachably mounted, and is configured such that when the tank is locked to the locking portion, the medicine discharge portion of the tank is connected to the medicine introduction portion of the feeding means. Drug spraying device. 2. An engaging portion that engages with a locking portion on the machine body side is provided on a side surface of the tank, and an abutting portion that abuts a tank side surface below the engaging portion is locked on the machine body side. The drug spraying device by an unmanned helicopter according to claim 1, wherein the drug spraying device is provided below the portion. 3. A pair of tanks are arranged on both side surfaces of the machine body, and contact portions to the side surface of the tank are formed at both ends of a frame member extending below the machine body in a width direction across the machine body. The drug spraying device by an unmanned helicopter according to claim 2, wherein. 4. The tank is attached and detached in the vertical direction, and the medicine introducing portion provided at the upstream end of the feeding means has a bowl-shaped receiving portion opened upward, and is provided in the tank. The medicine discharging portion is a spout that can be fitted into the bowl-shaped receiving portion by projecting downward from the tank, and the medicine discharging portion and the medicine introducing portion open when the spout is fitted in the receiving portion.
The chemical spraying device by an unmanned helicopter according to claim 1, wherein a valve element is provided for each of the spouts so that the spout is closed when the spout is separated from the receiving part. 5. The unmanned helicopter according to claim 1, further comprising a lock mechanism that locks the tank at a locking portion on the side of the machine body and automatically locks the locked state. Drug spraying device. 6. The chemical agent for an unmanned helicopter according to claim 5, wherein a grip portion of a release lever for unlocking the lock mechanism is arranged at or near a handle portion formed on the tank. Spraying device.