JP2000037156A - Control apparatus of radio control helicopter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a problem in an application operation in a wide area in which in a chemical spraying apparatus of atomizer type, the increase of the numbers of pumps and atomizers is required, consequently weight and power consumption are increased and power improvement in engine is needed and conventional two pumps have a limit to an application amount. SOLUTION: Booms 18 are extended right and left from the center of a main machine 1. The booms 18 are each vertically equipped with a tip nozzle 20, a middle nozzle 21 and an inside nozzle 22. The inside nozzle 22 is arranged a low position and the tip nozzle 20 at a high position. The tip nozzle 20 is arranged slantingly outward. The right and left booms 18 are each loaded with two pumps for supplying a chemical, respectively and each pump can be individually changed in operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio-controlled helicopter control device provided with a medicine spraying device.

[0002]

2. Description of the Related Art Conventionally, there has been known a technology in which a drug spraying device is mounted on a radio-controlled helicopter so that a drug can be sprayed in the air, and an atomizer system is used for spraying a drug. Was provided with two gear pumps, and by operating both gear pumps, it was possible to switch to full spraying and to switch to half spraying by operating one.

[0003]

However, in the conventional atomizer type medicine spraying apparatus, in order to further increase the spraying amount, it is necessary to increase the number of pumps and atomizers. Weight and power consumption have increased, and an increase in engine horsepower has been required. Further, the conventional two pumps have a limit in the amount of spraying, and in a wide area operation, a drug spraying device with a larger spraying amount has been desired.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, in a radio-controlled helicopter equipped with a medicine spraying device, a boom extends left and right from the center of the machine, a nozzle is suspended from the boom, and the position of the nozzle is arranged low near the machine, and the position of the boom is reduced. On the tip side, the position of the nozzle was arranged higher.

[0005] The nozzle on the boom tip side is disposed so as to be inclined outward with respect to the body.

Further, a plurality of drug supply pumps are mounted on the booms extending right and left of the machine, respectively, and the operation of each pump can be individually switched.

[0007] In the pump for drug supply mounted on the left and right sides of the machine, switching cocks are provided between a plurality of left and right pumps.

[0008]

Next, embodiments of the present invention will be described with reference to the accompanying drawings. 1 is a front view of a helicopter of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a view showing a medicine spraying apparatus, FIG. 4 is a sectional view of the same, FIG. 5 is a view showing an inner nozzle, and FIG. FIG. 7 is a side view of the spraying pump, FIG. 8 is a front view of the same, and FIG. 9 is a schematic plan view showing a medicine spraying device equipped with four pumps.

First, the overall configuration will be described with reference to FIGS. The body 1 includes a tail pipe 5 extending horizontally rearward from the rear side, and a driving engine (not shown) is mounted inside the body 1. The output of the engine is transmitted to a vertically extending main rotor shaft 3 to rotate a main rotor 4 (propeller) attached to the upper end of the shaft. The engine output is transmitted to a tail rotor shaft 6 mounted in the tail pipe 5, and a tail rotor (not shown) mounted on the rear end of the tail rotor shaft 6 rotates in synchronization with the main rotor 4. Drive.

A cover 11 is provided on both left and right sides of the body 1.
11 is attached, and the fuselage cover 11 is configured to be dividable left and right at the center of the fuselage in a front view, and is configured to open in the horizontal direction. In addition, the medicine tank 2 includes the body 1
On the left and right sides of the body 1, the body 1
Is extended along the side surface of the body 1 from the lower part of the body 1 in the left-right direction when viewed from the front. For this reason, the body cover 11 can be opened and closed with the medicine tank 2 mounted. The center of the medicine tank 2 in plan view is deeper, and is provided so as to be inclined downward from the left and right ends toward the center, so that the medicine flows into the bottom surface of the center by its own weight.

A skid 12 is provided at the lower left and right of the body 1.
The left and right skids 12 are connected so that their front portions (the left side in FIG. 2) are connected by a connecting frame 12a, and their rear portions are connected by a connecting frame 12b. The connecting frame 12a
12b are formed in a substantially inverted U-shape when viewed from the front, and are fixed to the lower surface of the body 1 respectively. A support frame 13 having a substantially U-shape in plan view is provided at a position on the lower surface of the body 1 where the connection frames 12a and 12b are fixed.
a.13b are fixedly provided. The support mechanisms 14a and 14a mounted on the support frames 13a and 13b, respectively.
The medicine tank 2 is supported from the front and rear of the machine body by 14b, and the center frame 16 of the medicine spraying device 15 is supported by the front support mechanism 14a.

Next, the medicine spraying device 15 of the present invention will be described with reference to FIGS. The medicine spraying device 15 includes a center frame 16, a boom 18, a pump, a nozzle, and the like. The center frame 16 is supported in the lateral direction of the machine body.
7 are supported so as to be rotatable in the horizontal direction.
(Note that FIG. 1 shows only the medicine spraying device 15 mounted on the left side of the machine body 1. Hereinafter, the medicine spraying device 15 on the left side of the machine body will be described.) Is fixed so as to extend substantially in the horizontal direction.
8 is configured to rotate in the horizontal direction. As a result, the boom 18 is rotated along the body 1 as shown in FIG. The boom 18 has a substantially U-shaped cross section as shown in FIG. 4, and has a lower side and both left and right ends opened. A pipe 19 for supplying a medicine is provided in the length direction of the boom 18. I have. Since the pipe 19 is housed in the boom 18 in this way, it is possible to prevent damage to the pipe material and improve the appearance quality.

As shown in FIG. 3, a drug supply port pipe 19a is connected to the pipe 19 at an end on the bracket 17 side, and a tip nozzle 20 is connected to the other end of the pipe 19. . The tip nozzle 20 is located outside the fuselage with respect to the center of rotation (vertical direction) of the boom 18 as shown by the arrow A in FIG. The medicine is sprayed by the tip nozzle 20 so that a wide area can be secured toward the outside of the machine. Further, by mounting the tip nozzle 20 outward, a large spraying area can be secured even if the length of the boom 18 is shortened, so that the configuration of the medicine spraying device 15 can be reduced. It also has excellent storage and storage properties.

Further, between the supply port pipe 19a of the pipe 19 and the tip nozzle 20, an inner T-shaped pipe 22 is provided on the supply port pipe 19a side.
a, an intermediate T-shaped tube 21a is connected to the tip nozzle 20 side. The inner T-tube 22a communicates with the pipe 19 in the horizontal direction, and a flexible tube 22b made of a synthetic resin or the like is vertically provided below the inner tube, and an inner nozzle is provided at a lower end of the flexible tube 22b. 22 are connected. With such a configuration, the medicine supplied from the supply port pipe 19a is sprayed from the inner nozzle 22 via the pipe 19, the inner T-shaped pipe 22a, and the flexible tube 22b. Then, the inner nozzle 22 is moved to the boom 18 as described above.
, The spraying area of the medicine by the inner nozzle 22 starts from a position below the machine body 1, so that the medicine can be prevented from adhering to the machine 1 or the skid 12. It is. Also, the inner nozzle 2
2 is suspended from the flexible tube 22b, so that when it comes into contact with an obstacle, the flexible tube 22b absorbs an impact and the inner nozzle 22 escapes, thereby preventing breakage and The impact on the aircraft 1 is also absorbed, and flight safety can be improved.

As shown in FIG. 5, a steel wire 22c of stainless steel or the like may be inserted into the flexible tube 22b so that the flexible flexible tube 22b has a restoring force. The steel wire 22c has a bent portion 22d at the upper end, and the steel wire 22c is connected to the inside T at the bent portion 22d.
It is configured to be locked in the horizontal pipe of the U-shaped pipe 22a. Thus, the flexible tube 2 has a simple configuration.
2b is applied with a restoring force, so that the dispersing direction of the inner nozzle 22 can be prevented from being disturbed.

The intermediate T-shaped pipe 21a communicates with the pipe 19 in the horizontal direction, and has an intermediate nozzle 21
Are connected substantially vertically downward. With such a configuration,
The medicine supplied from the supply port 19a is sprayed from the intermediate nozzle 21 through the pipe 19 and the intermediate T-tube 21a. Further, the intermediate nozzle 21 is disposed substantially on a straight line between the inner nozzle 22 and the tip nozzle 20, and is configured so that the medicine sprayed by the intermediate nozzle 21 does not adhere to the inner nozzle 22.

The tip nozzle 20, the intermediate nozzle 21, and the inner nozzle 22 arranged as described above use fan-shaped nozzles, and as shown in a schematic plan view of FIG. Range 20e ・ 21e ・
The nozzle angle is set at an angle (about 15 degrees in the present embodiment) as shown by arrow B in the figure so that the nozzle 22e does not come into contact with the nozzle 22e. As a result, it is possible to surely prevent the spraying ranges from overlapping, giving an effect such as unevenness or deviation to the spraying area, and also prevent the medicine from adhering to the body 1 or the skid 12 by rebounding. Also, since the boom 18 is configured to be rotatable about the bracket 17, when the boom 18 comes into contact with an obstacle, the boom 18 rotates to absorb the shock and escape.
While preventing damage to the aircraft, the shock to the fuselage 1 is also absorbed,
Safety can be improved.

On the other hand, on both left and right sides of the central frame 16, dispersing pumps 25, which are gear pumps, are provided. As shown in FIGS. 7 and 8, the spray pump 2
5 is accommodated in a cover 25a, and the cover 25a is fixed to the pump mounting plate 25b. The pump mounting plate 25b is mounted on the pipe-shaped central frame 16 at two upper positions by fixing members 26 and 26 made of U-shaped bolts or the like. The fixing member 26
The central frame 16 is inserted into the recess, and further projects through the bolt hole of the pump mounting plate 25b toward the spray pump 25, and is fixed with the tightening nuts 26a.
The center frame 16 is provided with a resin collar 16a around it, and the pump mounting plate 15b is fastened with the tightening nuts 26a so that the pump mounting plate 15b can rotate around the center frame 16.
The tightening force of ... is adjusted. With this configuration, when the pump mounting plate 15b comes into contact with an obstacle, the pump mounting plate 15b rotates around the central frame 16 in the front-rear direction of the machine and escapes, thereby absorbing the impact. This prevents the spray pump 25 from being damaged and absorbs the impact on the machine.

The medicine is supplied into the spray pump 25 from the discharge port provided at the lower part of the medicine tank 2 through the supply port 25d of the spray pump 25, and the discharge action of the spray port 25e of the spray pump 25 is performed by the pump action. Is discharged into the pipe 19 through the supply port pipe 19a provided at the end of the pipe 19.

As shown in FIG. 9, a plurality of (four in this embodiment) spray pumps P1, P2, P3
-It is possible to adopt a configuration in which P4 is mounted. The spray pumps P2 and P3 are respectively disposed between the inner nozzle 22 and the machine 1. The spray pumps P1 and P4 are respectively disposed between the inner nozzle 22 and the intermediate nozzle 21.
Further, a pipe 19 between the spray pump P1 and the inner nozzle 22 and a pipe 19 between the spray pump P4 and the inner nozzle 22 include:
A plurality (two in this embodiment) of cocks 19a and 19b are provided in accordance with the number of nozzles.

Then, according to an instruction from a wireless controller (not shown), the operation of driving only the spray pumps P2 and P3, or the spray pumps P2 and P3 and the spray pumps P1 and P
4 or any of the driving pumps P1
The operation for driving all of P2, P3, and P4 can be switched, and the amount of sprayed medicine can be adjusted to the total amount, three-quarters amount, or half amount.

Further, by closing the right and left cocks 19a and 19b in the "closed" state, only the circuit 30 of the piping 19 in the figure is used, the spray width of the medicine is adjusted to the minimum, and the right cock 19a is opened. By opening the circuit, the circuit 30 and the circuit 31 are used to spray the area from the center to the right side, and by opening the left cock 19b, the circuit 30 and the circuit 32 are used to spread the area from the center to the left. By spraying on the area and opening the left and right cocks 19a and 19b, the spray width can be adjusted to the maximum. By the function of adjusting the spray width, it is possible to prevent a medicine such as a herbicide from being sprayed to an unintended area. In this way, the spray amount of the medicine is adjusted by the four spray pumps P1, P2, P3, and P4, and the two cocks 19a and 1 are used.
Since the spray width of the medicine can be adjusted by 9b, it is possible to perform an appropriate spraying operation according to the working conditions.

[0023]

As described above, the present invention has the following advantages. That is, in a radio-controlled helicopter equipped with a medicine spraying device, a boom extends left and right from the center of the machine, a nozzle is suspended from the boom, and the position of the nozzle is arranged low near the machine, and the position of the boom is reduced. Since the position of the nozzle was arranged high on the tip side,
The medicine sprayed from the nozzles near the machine can be prevented from adhering to the machine or the skid, and the medicine sprayed from each nozzle can be prevented from adhering to the medicine spraying device such as another nozzle. It is. Further, since the sprayed medicines can be prevented from interfering with each other, a reliable spraying operation toward the target area can be performed.

Further, since the boom tip side nozzle is disposed so as to be inclined outward with respect to the machine body, it is possible to secure a wide spray area of the medicine by the tip side nozzle toward the machine body outside. Also, by mounting the tip side nozzle outward, it is possible to secure a wide spray area even if the boom length is shortened. It is also excellent in nature.

Also, a plurality of drug supply pumps are mounted on the booms extending to the left and right sides of the machine, respectively, and the operation of each pump can be individually switched. The work efficiency is improved, and the spray amount can be adjusted to the full amount, half amount, and the amount according to the number of pumps.Adjusting the spray amount according to the work environment improves the work efficiency and reduces the waste of chemicals. No spraying is possible.

In the medicine supply pumps mounted on the left and right sides of the machine, the switching cock is provided between each of the plurality of left and right pumps, so that the spray width can be adjusted together with the adjustment of the spray amount described above. Therefore, it is possible to further improve the work efficiency and to perform the spraying operation of the medicine without waste.

[Brief description of the drawings]

FIG. 1 is a front view of a helicopter according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a diagram showing a medicine spraying device.

FIG. 4 is a sectional view of the medicine spraying device.

FIG. 5 is a diagram showing an inner nozzle.

FIG. 6 is a schematic plan view showing a medicine spraying device.

FIG. 7 is a side view of the spray pump.

FIG. 8 is a front view of the spray pump.

FIG. 9 is a schematic plan view showing a medicine spraying apparatus equipped with four pumps.

[Explanation of symbols]

 2 Tank 15 Drug spraying device 16 Central frame 17 Bracket 18 Boom 20 Tip nozzle 21 Intermediate nozzle 22 Inner nozzle 25 Spraying pump

Claims (4)

[Claims] 1. A radio-controlled helicopter equipped with a medicine spraying device, wherein a boom is extended right and left from the center of the machine,
A device for controlling a radio-controlled helicopter, wherein a nozzle is mounted on the boom, and the position of the nozzle is low near the machine, and the position of the nozzle is high near the tip of the boom. 2. The boom tip side nozzle is disposed so as to be inclined outward with respect to the body.
A radio-controlled helicopter control device as described in the above. 3. The pump according to claim 1, wherein a plurality of drug supply pumps are mounted on the booms extending right and left of the machine, respectively, and the operation of each pump can be individually switched. Radio-controlled helicopter control equipment. 4. The radio-controlled helicopter control device according to claim 3, wherein, in the medicine supply pumps mounted on the right and left sides of the vehicle, switching cocks are provided between the plurality of left and right pumps, respectively.