JP2012050367A - Chemical spray working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimize a supply voltage depending on the kind of a nozzle part and to improve efficiency of spray operation in a spray working machine of electrostatic nozzle shape.SOLUTION: In the chemical spray working machine equipped with a conductive part (50) in the vicinity of a spray nozzle (16) of a center boom (12) and in the vicinities of spray nozzles (18) of right and left side booms (13) and a high-voltage power source apparatus (51) for supplying a high voltage to the conductive part (50), the chemical spray working machine includes nozzle part determination means (R1 and R2) for determining nozzle parts (N1, N2 and N3) in a use state and optimizes a voltage supplied from the high-voltage power source apparatus (51) on the basis of the determination of the nozzle part determination means (R1 and R2). The nozzle determination means is a means for directly detecting positions of the rotating nozzle parts (N1, N2 and N3) or a means for estimation by setting of a spray amount.

Description

  The present invention relates to a chemical solution spraying machine equipped with an electrostatic spraying device.

2. Description of the Related Art Conventionally, a configuration in which strip-shaped conductive portions are arranged over a plurality of spray nozzles, and a chemical solution from the spray nozzles is charged and efficiently attached to crops to be spread is known (Patent Document 1).
In addition, the above-mentioned electrostatic spraying device, chemical tank, and control pump that pressurizes chemical liquid and supplies it to the spray nozzle are equipped with a self-propelled spraying machine that can be used to turn on the pump switch that starts driving the control pump. A configuration in which a high voltage is supplied to the electrostatic spraying device in conjunction with each other is known (Patent Document 2).

JP 2008-194673 A JP 2010-148441 A

  By the way, the chemical solution charged by the electrostatic spraying device adheres mainly to the rear surface of the grown plant and increases the spraying and adhesion efficiency. However, the chemical solution also depends on the growth state of the plant, for example, the area of the leaf surface, the number of sheets, etc. It is necessary to control the charging state of the battery properly.

  Also, the nozzles to be used differ depending on the amount of spray set per unit area, that is, the nozzles may be selectively used with different nozzle diameters. For example, a conventional nozzle that sprays about 100 liters per 10 ares, a herbicide nozzle that sprays a large amount of 150 liters, or a small nozzle that sprays a small amount of about 25 liters, but these are replaced. Is attached to the nozzle boom. Therefore, since the amount and speed of the chemical liquid ejected from the spray nozzle are different, the charging effect is weak when the speed is high at a constant supply voltage, and the charging effect is excessive in the opposite case, and the desired leaf You will not be able to get backside spray.

  In view of the above, the present invention attempts to control the energization of the conductive portion to perform proper energization according to different spraying operations.

In view of the above problems, the present invention has taken the following technical means.
That is, according to the first aspect of the present invention, a center boom (12) provided with a plurality of spray nozzles (16, 18) for ejecting a chemical liquid is provided on the machine body (1) on which the chemical liquid tank (30) is mounted. The side booms (13L, 13R) are provided so as to be able to be opened and closed in a state of extending to the side of the machine body and being housed on the sides of the machine body, and the first is located in the vicinity of the spray nozzles (16, 16 ...) of the center boom (12). Conductive portions (50C) are disposed, and second and third conductive portions (50SL, 50SR) are disposed in the vicinity of the spray nozzles (18, 18 ...) of the left and right side booms (13L, 13R), respectively. In the chemical spraying work machine provided with the high voltage power supply device (51C, 51SL, 51SR) for supplying a high voltage to the first conductive portion to the third conductive portion (50C, 50SL, 50SR),
The spray nozzles (16, 18) constitute a plurality of nozzle portions (N1, N2, N3) having different diameters, and each nozzle portion is arranged with respect to the center boom (12) or the side boom (13L, 13R). Select one of (N1, N2, N3) and change it to a usage state that allows chemical ejection,
Voltage variable means (90C, 90SL, 90SR) for varying the supply voltage of the high voltage power supply device (51C, 51SL, 51SR) is provided,
Nozzle part determination means (R1, R2) for determining the nozzle parts (N1, N2, N3) in the selected use state of the spray nozzles (16, 18) is provided, and the nozzle part determination means (R1, R2) Based on this determination, the chemical solution spraying machine is configured to display and output on the display unit (40).

  According to the first aspect of the present invention, since a plurality of nozzle portions (N1, N2, N3) are provided, a conventional nozzle (for example, a spraying amount of 100 liters), a herbicide nozzle (150 liters), and a small amount of nozzles (same as above) 25 liters). Also, so-called electrostatic spraying is performed by supplying a high voltage to the first to third conductive portions (50C, 50SL, 50SR). According to the determination of the nozzle section determination means (R1, R2), which nozzle section (N1, N2 or N3) is displayed on the display section (40) with visible or voice. Based on this display, the operator determines which of the nozzle portions (N1, N2 or N3) is selected, and operates the voltage varying means (90C, 90SL, 90SR) to nozzles (N1, N2, N3). Supply a set high voltage every time.

The invention according to claim 2 is provided with a center boom (12) provided with a plurality of spray nozzles (16, 18) for ejecting the chemical liquid on the machine body (1) on which the chemical liquid tank (30) is mounted. The side booms (13L, 13R) are provided so as to be able to be opened and closed in a state of extending to the side of the machine body and being housed on the sides of the machine body, and the first is located in the vicinity of the spray nozzles (16, 16 ...) of the center boom (12). Conductive portions (50C) are disposed, and second and third conductive portions (50SL, 50SR) are disposed in the vicinity of the spray nozzles (18, 18 ...) of the left and right side booms (13L, 13R), respectively. In the chemical spraying work machine provided with the high voltage power supply device (51C, 51SL, 51SR) for supplying a high voltage to the first conductive portion to the third conductive portion (50C, 50SL, 50SR),
The spray nozzles (16, 18) constitute a plurality of nozzle portions (N1, N2, N3) having different diameters, and each nozzle portion is arranged with respect to the center boom (12) or the side boom (13L, 13R). Select one of (N1, N2, N3) and change it to a usage state that allows chemical ejection,
The variable voltage means (90C, 90SL, 90SR) for changing the supply voltage of the high voltage power supply device (51C, 51SL, 51SR) is provided, and the voltage variable means (90C, 90SL, 90SR) includes an interlocking means (91C , 91SL, 91SR) based on the output to the supply voltage can be changed,
Nozzle part determination means (R1, R2) for determining the nozzle parts (N1, N2, N3) in the selected use state of the spray nozzles (16, 18) is provided, and the nozzle part determination means (R1, R2) Based on this determination, the chemical solution spraying machine is configured to output to the interlocking means (91C, 91SL, 91SR).

  If comprised in this way, when performing electrostatic dispersion | distribution, from the interlocking means (91C, 91SL, 91SR) depending on which nozzle part (N1, N2 or N3) is determined by the nozzle part determining means (R1, R2). The voltage variable means (90C, 90SL, 90SR) is operated in response to the output of, and supplies a high voltage according to the selected nozzle portion (N1, N2 or N3).

  The invention according to claim 3 is the chemical solution according to claim 1 or 2, wherein the nozzle part determination means (R1) is configured based on a relationship between a spray amount stored in advance and a spray amount set by an operator. It shall be the configuration of a spreader.

The operator knows the relationship between the selection of the nozzle portion corresponding to the work mode to be performed and the set spray amount, and can determine the nozzle portion by setting the spray amount.
In the invention according to claim 4, the spray nozzles (16, 18, 29) are provided with a plurality of nozzle portions radially on the rotating portion X provided so as to be rotatable around the horizontal axis P with respect to the fixed side L of the boom body or the like. (N1, N2, N3), and the nozzle part determination means (R2) includes a reed switch (92L, 92M, 92R) between the fixed side L and the rotating part X side, and a magnet ( 93, 94L, 94R, 95L, 95M, and 95R), and the configuration is such that which nozzle portion (N1, N2, and N3) is in use according to the output signal of the reed switch (92L, 92M, and 92R). It is set as the structure of the chemical | medical solution spraying work machine of Claim 1 or Claim 2.

  By setting the relationship so that the output signal of the reed switch (92L, 92M, 92R) differs depending on the selection setting of the nozzle part (N1, N2, N3), any nozzle part (N1, N2, or N3) is in use. Can be determined.

Since the present invention is configured as described above, the following effects can be obtained.
That is, according to the first aspect of the invention, which nozzle part (N1, N2 or N3) is displayed on the display part (40) in a visible or voice manner by the judgment of the nozzle part judging means (R1, R2). The operator can determine which of the nozzle portions (N1, N2 or N3) is selected based on this display, and operates the voltage varying means (90C, 90SL, 90SR) to operate the nozzle portions (N1, N2). , N3), an appropriate high voltage can be supplied, and the chemical solution can be efficiently dispersed by obtaining a charged state corresponding to the type of the nozzle portion used.

  According to the second aspect of the present invention, when electrostatic spraying is performed, the interlocking means (91C) depends on which nozzle part (N1, N2 or N3) is determined by the nozzle part determination means (R1, R2). , 91SL, 91SR), and the voltage variable means (90C, 90SL, 90SR) is operated to supply a high voltage corresponding to the selected nozzle part (N1, N2 or N3). Can obtain a charged state corresponding to the type of the nozzle part (the type of nozzle part to be used) and efficiently perform the spraying operation.

According to the invention described in claim 3, the operator can simultaneously determine the nozzle portion by setting the spray amount.
According to the fourth aspect of the present invention, when the output signal of the reed switch (92L, 92M, 92R) differs depending on the selection setting of the nozzle portion (N1, N2, N3), any nozzle portion (N1, N2 or It can be determined whether N3) is in use.

It is a whole side view of a passenger management machine. It is a top view of a passenger management machine. It is a front view of a passenger management machine. It is a system configuration diagram. It is a top view of a dispersion | distribution control apparatus. It is a perspective view of the principal part. It is sectional drawing of a side boom and a slide boom. It is a top view which shows an effect | action. (A) The enlarged front view of the principal part of a side boom and a slide boom, (B) It is a perspective view of the one part. (A) Control block diagram, (B) A perspective view showing an example of a voltage change dial section. (A) The nozzle part expansion front view, (B) The front view, (C) The development view of the nozzle part determination means R2. It is a flowchart figure. It is a flowchart figure. It is a flowchart figure. It is a flowchart figure. It is a flowchart figure.

  Embodiments of the present invention will be described below with reference to the drawings. First, in terms of configuration, reference numeral 1 denotes a body of a passenger management machine that mainly performs cult work and control work in a field or paddy field. This passenger management machine includes a front wheel 2 and a rear wheel 3 having the same diameter, and an engine 4 is mounted on the front portion of the body 1. The engine 4 and the muffler (not shown) are covered with a bonnet 5, and masts 7 and 7 are erected on both the left and right sides of the bonnet 5, and the masts 7 and 7 are lifted by an upper link 8 and a lower link 9. A link mechanism 10 is configured. The upper link 8 and the lower link 9 have substantially the same length in the front-rear direction. Therefore, the lifting link mechanism 10 forms a parallelogram when viewed from the side. The elevating link mechanism 10 is raised and lowered by a pair of left and right elevating cylinders 11, 11 provided outside the bonnet 5. The elevating cylinders 11 and 11 are constituted by electric cylinders, but may be constituted by hydraulic pressure.

  Further, a support frame 14 for attaching a center boom 12 and side booms 13 and 13, which will be described later, is connected to the front portion of the elevating link 10. The support frame 14 has a rectangular shape when viewed from the front, and a swing shaft 15 extending in the front-rear direction is provided at the lower center of the support frame 14.

  The center boom 12 having a pair of front and rear boom frames 12F and 12R is pivotally supported on the swing shaft 15 so as to be pivotable up and down about the front and rear axis, and a plurality of downwardly directed chemical solutions are applied to the front center boom frame 12F. Nozzles 16, 16... That can be ejected are attached.

  The left and right side booms 13L and 13R are pivotally supported by left and right end portions of the rear center boom frame 12R by vertical fulcrum pins 17 and 17, and are also spaced at appropriate intervals on the lower end surfaces of the side booms 13L and 13R. A plurality of spray nozzles 18, 18... Accordingly, the center boom 12 and the side booms 13L, 13R can be integrally adjusted around the swing shaft 15 or controlled to swing up and down with the side booms 13L, 13R being expanded.

  A hydraulic cylinder mechanism 20 as an actuator is provided in a vertical posture between the support frame 14 side and the rear center boom frame 12R side. Reference numeral 20 a denotes a piston rod of the hydraulic cylinder mechanism 20.

  A control valve (not shown) for horizontal control is provided at an appropriate position of the center boom 12, and the center boom 12 and the side boom 13L, by supplying or discharging pressure oil from the hydraulic pump to the hydraulic cylinder mechanism 20 are provided. 13R is configured to swing up and down. Accordingly, when the piston rod 20a of the hydraulic cylinder mechanism 20 expands and contracts, the boom swings around the swing shaft 14. A plate 21 is provided along the vertical direction at the center in the left-right direction of the support frame 14. A swing angle sensor 22 is attached to the plate 21, and a horizontal sensor 23 provided at an appropriate position of the riding management machine 1. The hydraulic cylinder mechanism 20 is expanded and contracted in cooperation with the center boom 12 and the side booms 13L and 13R are horizontally controlled.

  Further, in FIG. 1, vertical movement cylinders 25L and 25R are provided between the top of the support frame 14 and the bases of the side booms 13L and 13R. Opening and closing that opens and closes the side booms 13L and 13R between the support frame 14 and the connecting plate 26 that is integral with the bases of the side booms 13L and 13R and can rotate about the fulcrum pins 17 and 17 with respect to the center boom frame 12R. Cylinders 27L and 27R are provided.

  The side booms 13L and 13R are connected to extension slide booms 28L and 28R, respectively. In other words, the side booms 13L and 13R on the fixed side are provided with a linear fixed frame 13m that holds the nozzle 18 and the chemical solution pipe portion 13p (FIG. 3), and can be slid in the longitudinal direction across the fixed frame 13m. The slide frame 28s is provided with the slide booms 28L and 28R on the slide side. The slide booms 28L and 28R are each provided with a pipe portion 28p, and spray nozzles 29, 29.

  A chemical solution tank 30 is mounted on the rear part of the passenger management machine 1, and the chemical solution is supplied to the spray nozzles of the center boom 12, the side booms 13L and 13R, and the slide booms 28L and 28R. That is, in FIG. 4, the chemical liquid stored in the chemical liquid tank 30 is pumped through the main pipe 32 by driving the control pump 31, and branched pipes 33 </ b> C and 33 </ b> S branched into the center boom 12 and the left and right side booms 13 </ b> L and 13 </ b> R side. , 33S to the spray nozzle 16 of the center boom 12, the side booms 13L, 13R and the spray nozzles 18, 29 of the slide booms 28L, 28R. A flow rate control valve 34 is interposed in the original pipe 32 so that the flow rate can be controlled.

  A traveling operation unit such as a steering handle 36 is provided in front of the driver's seat 35 of the riding management machine 1, and a spraying operation panel 37 is provided on the right side of the driver's seat 35. The operation panel 37 includes an opening / closing cock 38C, 38S, 38S corresponding to each of the branch pipes 33C, 33S, 33S, a control controller 41 having a control pump 31 drive switch 39, a liquid crystal display unit 40, and the lifting link mechanism 10. The boom switch 42 for extending and retracting the lifting cylinder 11 that moves up and down, the pair of left and right switches 43L and 43R for expanding and contracting the left and right opening and closing cylinders 27L and 27R, and the left and right side booms 13L and 13R are individually moved up and down. The vertical movement cylinders 25L, 25R extend and contract, and the slide motors 44L, 44R for sliding the slide booms 28L, 28R are mounted with cross lever-type switches 45L, 45R, etc. It can be operated up to. The spraying operation panel 37 in this embodiment can be operated while visually confirming the spray state from the center boom 12, the front booms 13L and 13R, and the slide booms 28L and 28R from the driver's seat 35. Compared to the configuration in which the boom is attached, it is not necessary to take a posture facing the back of the body, which is convenient.

  Further, as a configuration related to the control controller 41, operation switches are arranged around the liquid crystal display unit 40, and chemical spraying is performed by setting the spraying amount per unit area by the spraying setting switch 46 and the increase / decrease switch 47 and the machine body 1. And an automatic switch 48 that is turned on when an automatic mode is performed in which the flow rate control valve 34 is automatically controlled based on the travel speed to automatically control the amount of chemical solution sprayed from the spray nozzle. When the spraying operation is performed without turning on the automatic switch 48, the manual mode for always spraying the spraying amount based on the setting of the increase / decrease switch 47 is executed.

  In addition to the individual electrostatic switches 58, the main electrostatic switch 53 may be provided to select a normal spraying mode in which electrostatic spraying is not performed or an electrostatic control mode. Reference numeral 59 denotes a display lamp representing an electrostatic spraying state.

  The spray nozzles 16, 16 ... of the center boom 12, the spray nozzles 18, 18 ... of the side booms 13L, 13R, and the spray nozzles 29, 29 ... of the slide booms 28L, 28R are predetermined along the longitudinal direction of each boom. Two linear conductive parts 50 are arranged in parallel with each other so as to intervene in the diffusion range of the chemical solution from the spray nozzles at intervals, thereby constituting an electrostatic spraying device. The conductive portion 50 is a so-called bar electrode formed by coating a copper wire, a steel pipe, etc. with an insulator and a resin outer layer, and is arranged corresponding to the spray nozzles 16, 16... Of the center boom 12. The second and third conductive portions 50SL and 50SR disposed on the side booms 13L and 13R and the fourth and fifth conductive portions 50LL and 50LR respectively disposed on the slide booms 28L and 28R are associated with each other. Provided. An inverter 51 that functions as a high-voltage power supply device is connected to each of the first to fifth conductive parts 50, and a high voltage is supplied to the conductive part 50 so that the chemical liquid sprayed from the spray nozzles 16, 18, and 29 is used. Negative charge is given. When a negative charge is present in the vicinity of the leaves of a plant, the leaves are positively polarized on the front and back surfaces and negatively inside, so that a negatively charged chemical is attracted to the surface of the crop and also on the leaf surface. It adheres evenly to the back side. Note that the inverter 51 represents a correspondence relationship using the same reference numerals as those of the first to fifth conductive portions.

An electrostatic switch 53 is interposed in the power supply circuit 52 of the electrostatic spraying device so that power supply from the battery 54 can be switched on / off.
The controller 41 comprises travel speed detecting means S. That is, the riding management machine 1 is provided with a traveling transmission device M, and pick-up means 69 (for example, rear axle) that detects and outputs axle rotation to an axle portion that conducts the left and right rear wheels of the transmission mechanism in the traveling transmission device. A controller 41 that inputs the speed data from the pickup means 69 and calculates the traveling speed v of the airframe 1 is calculated from this speed data.

The electrostatic spraying device will be specifically described below.
With respect to the electrostatic spraying device for the center boom 12, the spray nozzles 16, 16,... Are disposed on the front boom frame 12F on the mounting side of the spray nozzles 16, 16,. The first conductive portions 50C and 50C are detachably supported on the support members 55 and 55 by being suspended and supported therebetween. A first inverter 51C is mounted on the upper surface of the front boom frame 12F via a hook-shaped bracket 56.

  Similarly, the side booms 13L and 13R have second and third inverters 51SL and 51SR, and the second and third conductive portions 50SL and 50SR, and the slide booms 28L and 28R have fourth and fifth inverters 51LL and 51LR. , And the fourth and fifth conductive portions 50LL, 50LR are mounted. As described above, the side booms 13L and 13R on the fixed side are provided with the linear fixed frame 13m that holds the nozzle 18 and the chemical solution pipe portion 13p, and are slidable in the longitudinal direction across the fixed frame 13m. A slide frame 28s is provided, and slide booms 28L and 28R on the slide side are integrally attached to the slide frame 28s. Further, the relationship between the fixed frame 13m and the slide frame 28s is that the slide booms 28L and 28R are each provided with a pipe portion 28p and provided with spray nozzles 29, 29. The side booms 13L and 13R configured as described above and the slide booms 28L and 28R are in a relationship of being arranged in the front-rear direction so that the slide booms 28L and 28R are on the front side. The second and third inverters 51SL and 51SR are detachably attached to the rear surface of the bracket 57 via the bracket 57 on the base end side of the fixed frame 13m, while the fourth and fourth inverters are directly attached to the front surface of the sliding frame 28s. The fifth inverters 51LL and 51LR are attached to the base end side.

  That is, the fixed frames 13m and the sliding frames 28s of the side booms 13L and 13R are arranged in the front and rear, and the second and third inverters 51SL and 51SR are mounted on the surface opposite to the side on which the sliding frames 28s are present. 4. Since the fifth high-voltage power supply devices 51LL and 51SR are mounted on the surface opposite to the side where the fixed frame 13m exists, the inverters 51SL and 51SR are not provided between the fixed frame 13m and the sliding frame 28s. In addition, the conductive part 50 and the inverter 51 can be easily combined to form an electrostatic spray structure for a model that does not affect the assembly of both the frames 13m and 28s and does not include an electrostatic device.

  Like the center boom 12, biped support members 55, 55,... Are arranged on the fixed frame 13m at predetermined intervals, and the second and third conductive portions 50LL, 50LR for the side booms 13L, 13R are arranged. And the fourth and fifth conductive portions 50LL and 50LR for the slide frames 28L and 28R are attached to the support members 55, 55... On the slide frame 28s side.

  Power is supplied from the battery 54 through the power supply circuit 52 and from the power supply line, and the inverters 51 are energized. Each inverter 51 is configured to be converted to a high voltage, and this high voltage is applied to each conductive portion 50. In the above configuration, since the inverter 51 functioning as a high-voltage power supply device is disposed corresponding to each of the center boom 12, the left and right side booms 13L and 13R, and the left and right slide booms 28L and 28R, the lifting / lowering operation, the folding opening / closing operation, and the slide Although each operation is performed independently, it is possible to smoothly cope with these movements. That is, since the combination with the conductive portion 50 is configured in units of inverters 51 and combined with individual booms, it is not necessary to connect and configure the high-voltage conductive portion 50 at a portion that causes articulation. In other words, when the common inverter 51 is installed in the conductive part 50 of the divided boom, the conductive part 50 is disposed in the joint movement portion, so there is a risk of breakage due to repeated bending operations. When the conductive portion and the inverter are individually combined, it is not necessary to connect the articulating portion with the conductive portion, so that there is no breakage, there is no risk of leakage, and the handling is easy.

  In addition, by providing the first to fifth on / off switches 58 for each inverter 51, only the inverter 51 at a location necessary for the spraying operation can be turned on, and the power to the location where the spraying operation is not performed is turned off. It has the effect of saving power and avoiding unnecessary danger. The same reference numerals are used to clarify the correspondence between the conductive portion 50 and the inverter 51. As the configuration of the on / off switch 58, in addition to the electrostatic switch 53, a circuit for supplying power to each inverter 51 is configured in the power circuit 52, and the first to fifth on / off switches 58 are provided respectively. Further, by providing an on / off switch in a box that accommodates each inverter 51, the power can be arbitrarily turned off.

In the illustrated example, the conductive portions 50 parallel to the left and right are not independently connected, but they may be connected and bent into a U shape to form a parallel state.
FIG. 9 is an enlarged front view of the side booms 13L and 13R and the slide booms 28L and 28R. As described above, the second and third inverters 51SL and 51SR are detachably attached to the base of the fixed frame 13m. A mast 60 is erected in the vicinity of the second and third inverters 51SL and 51SR. A wire 62 is routed between the wire 61 and the coil hose 63. Both are connected so that the high-pressure chemical solution acts on the T-shaped joint 64 from the branch pipe 33S. One of the T-shaped joints 64 is provided with a connection pipe 65 for connection to the side boom 13L or 13R, and the other is connected to the coil hose 63. The terminal end of the coil hose 63 is connected to the connecting pipe 66 connected to the slide boom 28L or 28R. Accordingly, when the slide boom 28L or 28R slides by driving the slide motor 44L or 44R, the chemical solution can be supplied while being extended or shortened by the coil hose 63 and following the movement. In the present embodiment, the wiring portion 67 extending from the power supply circuit 52 is integrally branched to the coil hose 63, and one of them is connected to the second and third inverters 51SL and 51SR of the side boom 13L or 13R, and the other is connected. The extension wiring portion 68 fixed to the coil hose 63 is connected to the fourth and fifth inverters 51LL or 51LR of the slide boom 28L or 28R. If comprised in this way, the intermediate extension wiring part 68 can be accommodated using the coil restoring force of the coil hose 63, and a cost reduction can be aimed at without requiring a separate extension accommodation structure.

  The controller 41 incorporates power supply switching means K. That is, as shown in FIG. 10, an automatic contact 87 is connected to each main electrostatic switch 53 in series. The automatic contact 87 determines whether or not the travel speed v detected by the travel speed detection means S is equal to or lower than a preset low speed side set value v1 (for example, v1 = 0), and as a result, the low speed side set value v1. When it is below, the ON signal is not output and the automatic contact 87 continues to be OFF. Accordingly, when the low speed side set value v1 or less, no electrostatic switch signal is input to the controller 41 even if the electrostatic switch 53 is on. That is, when the traveling speed v of the airframe 1 is “0”, the inverter 51 is not supplied with power, and the conductive portions 50 are not charged. When the traveling speed v exceeds the low speed side predetermined value v1, that is, when the vehicle travels in a predetermined direction, the automatic contact 87 receives the operation signal and turns on the contact. Therefore, by setting the main electrostatic switch 58 to ON in advance, the main electrostatic switch 53 signal is automatically output as the machine body 1 moves forward, and the conductive portion 50 is automatically activated. Turned on. For this reason, since it is automatically turned off without the need to operate the electrostatic switch 56 each time during the spraying work, turning, or work interruption, accidents due to unexpected electric leakage or short circuit (short circuit) can be reduced.

  In addition, the automatic contact 87 is turned off when the travel speed v detected by the travel speed detection means S exceeds a predetermined high speed side predetermined value v2. By setting the high speed side predetermined value v2 at a speed slightly higher than the traveling speed at which the normal spraying operation is performed, the state where the high speed side predetermined value v2 is exceeded, that is, traveling on the road or moving between fields in the non-spraying operation In such a case, it is possible to reduce accidents due to the unexpected electric leakage or short circuit (short circuit) as in the case of stopping the aircraft by turning off the conductive portion 50.

  Next, supply voltage control by nozzle type setting will be described. As shown in FIGS. 11 (A) and 11 (B), the spray nozzles 16, 18, and 29 are all radially provided on a rotating portion X provided so as to be rotatable about a horizontal axis P with respect to a fixed side L such as a boom body. Three types of nozzle portions N1, N2, and N3 are provided. Here, for example, N1 is sprayed with 100 liters at the conventional nozzle part, N2 is sprayed with 150 liters at the herbicide nozzle part, and N3 is sprayed with 25 liters at the nozzle part for small quantity spraying. In this way, the amount of application is different, but the difference is set by the nozzle diameter.

  By the way, when taking the combination of the nozzles N1, N2, and N3 having different spraying amounts in this way, it is preferable that the voltage of the conductive portion 50 is also made different. For example, the conventional nozzle part of N1 is 7,000 V, the nozzle part for herbicide of N2 is 10,000 V, and the nozzle part for spraying a small amount of N3 is 5,000 V. For this reason, the inverters 51C, 51SL, 51SR, 51LL, and 51LR as the high-voltage power supply devices are provided with voltage changeable dials 90C, 90SL, 90SR, 90LL, and 90LR as voltage changing means, and the liquid crystal display unit 40 Is configured to estimate and display which of the nozzles N1, N2, and N3 is in the set state, and to notify the operator of this fact. In addition, “C” of 51C and 90C is for the center boom, “S” of 51SL and 90SL is for the side boom, “L” is for the left side, “R” of 51SR and 90SR is for the right side, 51LL, The first “L” of 90LL is for the slide boom, the rear “L” is for the left side, and the “R” of 51LR and 90LR is for the right side. The same applies to the following.

  That is, based on FIG. 12, the operator selects one of the nozzle portions N1, N2, and N3 appropriate for the work to be performed in advance, and sets the spray amount (step 101). The spray amount is set by selecting the spray setting mode based on the display changeover switch among the switch group of the controller 41, changing the numerical value displayed on the liquid crystal display unit 40 by the increase / decrease switch to a desired numerical value, Setting is completed by turning on the spray setting switch 46 with a predetermined numerical value. The operator is familiar with the relationship with the set spraying amount according to the form of the normal spraying work, and can visually determine the value of the set spraying amount on the liquid crystal display unit 40 to determine which nozzle type is used. (Step 102) (Nozzle part determination means R1). Based on the determination result, the notation of the nozzle type is output to the liquid crystal display unit 40 (steps 103 to 108), and the notation is visually determined to give a desired supply voltage (steps 109 to 111). Here, “standard supply voltage + α” in step 110 indicates a voltage higher than the standard supply voltage, for example, 10,000 volts, and “standard supply voltage−β” in step 111 indicates a voltage lower than the standard supply voltage, for example, 5000 volts. Point to. Thus, the operator can set the supply voltage to all of the first to fifth inverters 51 by operating the voltage change dial 90. Thereafter, the traveling lever is operated (step 112), and the spraying operation is performed (step 113).

  In the supply voltage control (I) based on the nozzle type determination shown in FIG. 12, the manual setting is performed with the voltage change dial 90, but automatic setting may be used as shown in FIGS. That is, as shown in FIG. 13, the nozzle type is determined (steps 203 to 205), the nozzle type is displayed on the liquid crystal (steps 206 to 208), and the electric motor (in conjunction with the rotary knob portion of the voltage change dial 90) (Interlocking means) 91C, 91SL, 91SR, 91LL, 91LR are rotated in forward and reverse directions to control to a predetermined supply voltage (steps 209 to 211) (supply voltage control (II) by nozzle type determination). The meanings of the standard supply voltage, + α, and −β are the same as described above.

  The configuration shown in FIG. 14 is a setting nozzle part detecting means for discriminating which nozzle part is in a downward set position between the fixed side L and the rotating part X with the nozzle parts N1, N2 and N3. R2 is configured so that the controller 41 can input the detection result. Therefore, the controller 41 discriminates the nozzle portion N1, N2 or N3 based on the detection result of the nozzle portion judging means R2, and outputs a signal for outputting a preset voltage to the conductive portion 50 based on this discrimination. (Supply voltage control by nozzle type determination (III)). Specifically, as shown in FIG. 11C, three reed switches 92L, 92M, and 92R are attached to the lower position of the fixed side L, and the phase angle of 120 degrees is set on the rotating portion X side. Corresponding to each of the three nozzle portions N1, N2, and N3 arranged in step 1, a single magnet 93, two magnets 94L and 94R, and three magnets 95L, 95M, and 95R are arranged, and lead Which of the switches 92L, 92M, and 92R generates an output signal determines which nozzle N1, N2, and N3 is facing downward. Can be determined as the state in which the nozzle N1 faces downward due to excitation by the magnet 93. Of the three reed switches, the two left and right reed switches 92L and 92R output can be determined to be due to excitation by the magnet 94, and it can be determined that the nozzle N2 faces downward. Furthermore, it can be determined that the nozzle N3 is in a downward state because all three of the three reed switches output by the excitation by the magnet 95.

  As described above, the direct rotation change of the nozzles N1, N2, and N3 is detected to detect which one is downward, and based on the determination of the downward nozzle, the electric motor 91 is rotated in the forward and reverse directions to obtain a predetermined value. Control is performed to supply voltage (steps 304 to 306). The meanings of the standard supply voltage, + α, and −β are the same as described above.

  If the combination of the reed switch and magnet is configured as described above, there is no output from the reed switch, or there is no output from the regular reed switch, so it is set slightly shifted from the regular position. This can contribute to the discovery of accidents and prevent unforeseen spraying work.

The operation incorporating the supply voltage control based on the nozzle type determination will be described with reference to the flowchart of FIG.
An unillustrated key switch is turned on to start the engine 1 and energize the controller 41 (step 401). Next, it is determined whether or not the automatic mode is set depending on whether or not the automatic switch 48 is turned on (step 402). After the automatic mode is determined, the spraying amount is set (step 403), and the control pump drive switch 39 and the boom switch 42 are turned on to prepare for spraying (steps 404 and 405).

  Next, ON / OFF of the main electrostatic switch 53 and the first to fifth electrostatic switches 58 is determined. When the main electrostatic switch 53 is turned on and any one of the first to fifth electrostatic switches 58 is turned on, the switch condition for electrostatic spraying is satisfied (steps 406 and 407). When the main electrostatic switch 53 is OFF or all the first to fifth electrostatic switches are turned OFF, electrostatic spraying is not executed.

  If it is determined that the electrostatic spraying operation has been selected, in step 408, the power supply control is set based on the nozzle type determination. That is, the supply voltage is set based on the nozzle selected as described above.

Further, the blower switch 93 is turned on, the opening / closing cock is opened (steps 409 to 410), and preparation for spraying is performed.
When the vehicle body 1 is moved forward by operating the travel lever (step 411), the detection data of the travel speed detection means S is input (step 412), and a predetermined low speed side predetermined value v1 (v1 = 0 in the embodiment) is set. , And a predetermined high speed side predetermined value v2 are compared (steps 413 and 415). When v> v1, the control pump automatic contact 88 is turned on (step 414).

  The control pump automatic contact 88 is provided in series with the control pump drive switch 39. When the drive switch 39 is aligned with the ON output of the automatic contact 88 under the ON condition, the control pump 41 outputs the control pump drive. This is a configuration.

  Further, when the operation is within the proper work range of v <v2 in the step 415, the electrostatic switch automatic contact 87 is turned on, and the electrostatic switch on information is sent to the controller 41 in combination with the on operation of the main electrostatic switch 53. Is input (step 416). Thus, when the conditions of steps 414 and 416 are satisfied, the spraying operation is performed while controlling the flow rate Q in proportion to the detected traveling speed v (step 417). The control of the flow rate Q is configured to control the flow rate control valve 34 so that the flow rate Q is calculated from the traveling speed v and the set spray amount q (step 419). If the conditions of steps 414 and 416 are not satisfied, the electrostatic switch automatic point 87 is kept off (step 418).

  Thereafter, the operation is continued until the key switch is turned off. When the key switch is turned off, both the automatic contact 88 for the control pump and the automatic contact 89 for the electrostatic switch are turned off (steps 421 and 422).

  If it is determined in step 406 and step 407 that the electrostatic switch is OFF and electrostatic spraying cannot be determined, if it is determined that normal spraying is not accompanied by static electricity, spray set amount correction control is performed (step 423). In contrast to normal spraying that is not originally accompanied by electrostatic spraying, electrostatic spraying has a higher efficiency in attaching chemicals to the backside of the leaves. Therefore, in step 423, normal spraying is performed, and therefore, a predetermined rate (for example, about 20%) is increased. Make corrections. On the contrary, when electrostatic spraying is performed, it may be set to reduce about 20% from the normal spraying. That is, in the case of electrostatic spraying, since the foliar adhesion effect is higher than in the case of normal spraying, there is an effect that the use of medicine can be reduced. In this flowchart, the effect of this reduction (or increase) is converted in advance into the amount of application. The degree of reduction (or increase) can be changed and set depending on the nozzle type.

  In the above example, when the traveling speed v is in the range between the low speed side and the high speed side predetermined values v1 and v2, the spraying operation and the spraying amount control are performed in the automatic mode. Although the work is restrained, especially for restraining on the high speed side, it is not based on the management of the running speed v, and the amount of operation of the operating lever and pedal for driving, for example, the HST lever for the HST continuously variable transmission and the HST pedal If the airframe is predicted to travel at a predetermined speed or more based on the detection result, both the automatic contact 88 for the control pump and the automatic contact 89 for the electrostatic switch are turned off to restrain the spraying operation. can do.

  If it is determined in step 402 that the automatic switch is not turned on and the manual mode is selected, after the spray amount setting (step 424) and various switch on operations (step 425), the main electrostatic switch and the first to fifth switches If it is determined that electrostatic spraying is performed with any one of the electrostatic switches turned on (steps 426 and 427), as in step 408, the power supply control is set based on the nozzle type determination and is selected as described above. The supply voltage is set based on the nozzles (step 428).

  In the above embodiment, the supply voltage is changed to a large or small value based on the change of the nozzle type. However, the supply voltage is changed and controlled based on the change control output to the flow control valve 34. Also good. With this configuration, fine electrostatic spraying control can be performed.

  Regardless of whether the spraying work by changing the type of nozzle part is an automatic mode that controls the spraying amount in conjunction with the vehicle speed or a manual mode that keeps the spraying amount constant, in any mode It is equally effective.

  FIG. 16 is a flowchart for determining the correctness of the determination by the nozzle portion determination means R2. The relationship between the nozzle portion N1, N2 or N3 by the nozzle portion determination means R2 and the appropriate nozzle (or corresponding nozzle) according to the spray amount setting by the operator is compared (steps 501 to 505). The determination of the means R2 is correct, and in the case of a mismatch, it is determined that the nozzle setting is incorrect or the spray amount setting is incorrect, and “match” or “mismatch” is displayed on the liquid crystal display unit 40 (steps 506 and 507). . By comprising in this way, the waste of a chemical | medical agent can be prevented, without starting a spraying operation | work without the relationship between a nozzle part and a setting spraying amount being inconsistent.

DESCRIPTION OF SYMBOLS 1 Airframe 10 Lifting link mechanism 12 Boom support frame 13L Side boom 13R Side boom 13m Fixed frame 14 Boom support frame 16 Spray nozzle 18 Spray nozzle 28L Slide boom 28R Slide boom 28s Slide frame 29 Spray nozzle 30 Chemical solution tank 41 Control controller 50C 1st 1 conductive part (conductive part)
50SL Second conductive part (conductive part)
50SR Third conductive part (conductive part)
50LL 4th conductive part (conductive part)
50LR 5th conductive part (conductive part)
51C 1st inverter (high voltage power supply)
51SL 2nd inverter (high voltage power supply)
51SR 3rd inverter (high voltage power supply)
51LL 4th inverter (high voltage power supply)
51LR 5th inverter (high voltage power supply)
58C 1st electrostatic switch (electrostatic switch)
58SL Second electrostatic switch (electrostatic switch)
58SR Third electrostatic switch (electrostatic switch)
58LL 4th electrostatic switch (electrostatic switch)
58LR 5th electrostatic switch (electrostatic switch)
90C voltage change dial (voltage variable means)
90SL voltage change dial (voltage variable means)
90SR Voltage change dial (voltage variable means)
90LL voltage change dial (voltage variable means)
90LR Voltage change dial (voltage variable means)
91C Electric motor (interlocking means)
91SL Electric motor (interlocking means)
91SR Electric motor (interlocking means)
91LL Electric motor (interlocking means)
91LR Electric motor (interlocking means)
92L, 92M, 92R Reed switch 93 Magnet 94L, 94R Magnet 95L, 95M, 95R Magnet N1, N2, N3 Nozzle part R1, R2 Nozzle part judgment means L Fixed part P Horizontal axis X Rotating part

Claims (4)

  A body boom (1) equipped with a chemical tank (30) is provided with a center boom (12) having a plurality of spray nozzles (16, 18) for ejecting chemical liquid, and left and right side booms (13L, 13R) are mounted on the machine body. The first conductive part (50C) is disposed in the vicinity of the spray nozzles (16, 16,...) Of the center boom (12) so that it can be opened and closed in a state of extending to the side and in a state of being stored on the side of the machine body. The second and third conductive portions (50SL, 50SR) are disposed in the vicinity of the spray nozzles (18, 18 ...) of the left and right side booms (13L, 13R), respectively, and the first conductive portion to the third conductive portion ( 50C, 50SL, 50SR) In a chemical solution spraying work machine provided with a high voltage power supply device (51C, 51SL, 51SR) for supplying a high voltage, the spray nozzles (16, 18) have a plurality of different diameters. Nozzle (N1, N2, N3), select one of the nozzle parts (N1, N2, N3) for the center boom (12) or side boom (13L, 13R) and reassemble them into a useable state where chemicals can be ejected The voltage variable means (90C, 90SL, 90SR) for changing the supply voltage of the high voltage power supply device (51C, 51SL, 51SR) is provided, and the spray nozzle (16, 18) is in a selected use state. Nozzle part determining means (R1, R2) for determining a certain nozzle part (N1, N2, N3) is provided, and display is output to the display part (40) based on the determination of the nozzle part determining means (R1, R2). A chemical spraying machine with a configuration.   A body boom (1) equipped with a chemical tank (30) is provided with a center boom (12) having a plurality of spray nozzles (16, 18) for ejecting chemical liquid, and left and right side booms (13L, 13R) are mounted on the machine body. The first conductive part (50C) is disposed in the vicinity of the spray nozzles (16, 16,...) Of the center boom (12) so that it can be opened and closed in a state of extending to the side and in a state of being stored on the side of the machine body. The second and third conductive portions (50SL, 50SR) are disposed in the vicinity of the spray nozzles (18, 18 ...) of the left and right side booms (13L, 13R), respectively, and the first conductive portion to the third conductive portion ( 50C, 50SL, 50SR) In a chemical solution spraying work machine provided with a high voltage power supply device (51C, 51SL, 51SR) for supplying a high voltage, the spray nozzles (16, 18) have a plurality of different diameters. Nozzle (N1, N2, N3), select one of the nozzle parts (N1, N2, N3) for the center boom (12) or side boom (13L, 13R) and reassemble them into a useable state where chemicals can be ejected The voltage variable means (90C, 90SL, 90SR) for changing the supply voltage of the high voltage power supply device (51C, 51SL, 51SR) is provided, and the voltage variable means (90C, 90SL, 90SR) The supply voltage can be changed based on the output to the interlocking means (91C, 91SL, 91SR), and the nozzle portions (N1, N2, N3) in the selected use state of the spray nozzle (16, 18) are determined. And a configuration for outputting to the interlocking means (91C, 91SL, 91SR) based on the determination of the nozzle part determining means (R1, R2). Chemical solution sprayed working machine.   The chemical | medical solution spraying work machine of Claim 1 or Claim 2 made into the structure based on the relationship between the spraying quantity memorize | stored beforehand and the spraying quantity set by the operator.   The spray nozzles (16, 18, 29) are arranged in a plurality of nozzle portions (N1, N1, N) radially on a rotating portion (X) provided to be rotatable about a horizontal axis (P) with respect to a fixed side (L) of the boom body or the like. N2 and N3), the nozzle determining means (R2) includes a reed switch (92L, 92M, 92R) between the fixed side (L) and the rotating part (X) side, and a magnet corresponding to them. (93, 94L, 94R, 95L, 95M, 95R) are arranged, and which nozzle unit (N1, N2, N3) is in use according to the output signal of the reed switch (92L, 92M, 92R) and The chemical | medical solution spraying work machine of Claim 1 or Claim 2.

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