JP2012152169A - Granule-scattering apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a granule-scattering apparatus easily treatable when the apparatus is singly carried, and facilitating the operation for assembling parts.SOLUTION: The granule-scattering apparatus is constituted as follows. A rotary dispersing means 27 rotatably driven by an electrically driven motor and for dispersing and releasing granules sent out by a sending-out means on a field is installed in a state of being stored in a casing 29, and an electric power is fed from an outer electric source through an electric wire 77 to the electrically driven motor. The casing 29 is constituted of a double-split structure in which a pair of case units 29a and 29b are joined at joining faces w. A connecting tool at the granule-scattering apparatus side in a connector 78 for freely connecting and separating the electric wire 77 is installed in the casing 29 in a state of being nipped between the joining faces w of the case units 29a and 29b.

Description

  The present invention includes: a feeding unit that feeds powder particles stored in the storage unit; and a rotary diffusion unit that is rotationally driven by an electric motor and diffuses and discharges the powder particles fed from the feeding unit to a field. The present invention relates to a granular material spraying device that is provided in a state of being housed in a casing and configured to be supplied with electric power from an external power source via an electric wiring to the electric motor.

  As an example of the above-mentioned powder distribution device, in the powder distribution device provided at the rear of the riding type work machine, conventionally, from the power supply (for example, battery) provided in the machine body of the work machine as an external power supply, Electric power is supplied to the electric motor on the powder particle distribution device side through the electrical wiring, and the electrical wiring is placed at the middle position in the longitudinal direction of the electrical wiring that connects the work machine and the drug distribution device. A connector that can be connected and separated is interposed (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-161928

  In the above-mentioned conventional configuration, the electrical wiring on the side of the granular material spreading device exposed outward from the granular material spreading device becomes longer, and the tip of the granular material spreading device side which is a part of the connector is at the tip. Since the connection tool is attached, for example, when removing the powder distribution device from the work machine or mounting the powder distribution device on the work machine, the operator can use the device alone to remove the powder distribution device. When carrying around, the long electrical wires sway in the free state and interfere with the work, and the connection tool at the tip is caught by other objects and interferes with the work. It was.

  Also, the electrical wiring on the side of the granular material spraying device is electrically connected at one end to an electric motor provided inside the granular material spraying device, and the other end is exposed to the outside of the granular material spraying device. A connecting tool (a part of the connector) to be provided has to be electrically connected, and there is a disadvantage in that the assembling work of the parts becomes troublesome when assembling the granular material spraying device.

  An object of the present invention is to provide a granular material spraying device that is easy to handle when carried by the device alone and that is easy to assemble parts.

The granular material spraying device according to the present invention diffuses and discharges the granular material fed out from the feeding means that is rotated by an electric motor and fed out from the feeding means to feed out the granular material stored in the storage unit. The rotary diffusion means is provided in a state of being housed in a casing, and is configured to supply power to the electric motor from an external power source via electric wiring,
The first characteristic configuration is
The casing is configured by a split structure that connects a pair of case unit bodies at a mating surface to form a storage space for storing the feeding means and the electric motor,
In the connector that can connect and separate the electric wiring, the connector on the powder particle distribution device side is mounted on the casing in a state of being sandwiched between the mating surfaces of the case unit bodies.

  According to the first characteristic configuration, the casing is configured by a split structure in which a pair of case unit bodies are connected to each other at a mating surface. Therefore, the pair of case units are accommodated in a state where the electric motor and the feeding means are accommodated therein. The case unit bodies can be assembled by connecting at the mating surfaces, and the connector on the powder particle distribution device side of the connector is attached to the casing in a state of being sandwiched between the mating surfaces of the case unit bodies.

  In this way, since the connecting tool on the granular material spreading device side is mounted on the casing, even if the granular material spreading device is carried alone, the electrical wiring will not be exposed to the outside for a long time. , It will be easy to handle without any disadvantages such as getting caught in other objects and hindering work.

  In addition, when the pair of case unit bodies are connected at the mating surfaces, the connection tool is mounted in a state of being sandwiched between the mating surfaces of the case unit bodies. What is necessary is just to connect, it is not necessary to attach long electrical wiring in the state exposed to the outside of a casing, and the assembly | attachment operation | work of components can also be performed easily.

  Therefore, according to the 1st characteristic composition, it became easy to handle when carrying alone, and it became possible to provide a granular material spraying device that makes it easy to assemble parts.

  According to a second characteristic configuration of the present invention, in addition to the first characteristic configuration, the connection tool includes an insertion port that opens downward, and the connection tool on the external power supply side is inserted and attached from the lower side to the upper side. It is in the point comprised as follows.

  According to the second characteristic configuration, since the connection tool is provided with the insertion opening that opens downward and the connection tool on the external power supply side is inserted and attached from the lower side toward the upper side, Even if the cleaning water comes down, it is difficult for moisture to enter from the downward insertion port, and even if it enters, the moisture that has entered immediately enters the downward opening. Will fall down. As a result, moisture does not stay in the connector for a long time, and it is easy to avoid disadvantages such as early rusting or corrosion caused by moisture.

  The third characteristic configuration of the present invention is that, in addition to the first characteristic configuration or the second characteristic configuration, the connection tool is provided on the lower surface of the casing.

  According to the third feature configuration, since the connection tool is provided on the lower surface of the casing, it becomes difficult for rain water or cleaning water for cleaning to fall on the connection tool, and the metal portion of the connection tool rusts early due to moisture. It is easier to avoid disadvantages such as corrosion and corrosion.

  A fourth characteristic configuration of the present invention is that, in addition to any one of the first characteristic configuration to the third characteristic configuration, a waterproof sealing material is provided at a connection portion of the mating surface in the casing.

  If the casing has a split structure in which a pair of case unit bodies are connected at a mating surface, moisture may enter the casing from the connection location of the case unit bodies. Since the waterproof sealing material is provided at the connection part, moisture can be prevented from entering from the connection part of the case unit. As a result, for example, due to moisture, it is easy to avoid disadvantages such as powder particles adhering to and depositing on the wall portion of the passage through which the powder particles pass, making it impossible to feed and supply at an early stage.

  The fifth characteristic configuration of the present invention is that, in addition to any of the first characteristic configuration to the fourth characteristic configuration, a drain hole is formed at a mounting location of the connector in the casing.

  According to the fifth characteristic configuration, even if moisture enters the casing due to some factor, the moisture can be discharged to the outside through the drain hole, and staying in the casing can be avoided. Moreover, since the drainage hole is formed by utilizing the attachment location of the connection tool, there is no need for an opening dedicated to drainage, which is advantageous in terms of the production of the casing.

  In the sixth feature configuration of the present invention, in addition to any one of the first feature configuration to the fifth feature configuration, a bulging portion bulging outward of the case is formed at a connection portion of the mating surface in the casing, The connecting tool is attached to the bulging portion.

  According to the sixth feature configuration, since the connecting tool is mounted on the bulging portion bulging outward from the case, the connecting tool is mounted in a state that does not interfere with the storage of the feeding means, the diffusing means, and the like inside the casing. be able to. That is, while making the outer shape of the casing as compact as possible, it is possible to rationally provide a connector for connecting and disconnecting electrical wiring.

It is a whole side view of a riding type rice transplanter. It is a whole top view of a riding type rice transplanter. It is a rear view of a chemical spraying device. It is a disassembled perspective view of the attaching part of a chemical spraying device. It is a vertical side view of a chemical spreader. It is a bottom view of a medicine spreader. It is a side view which shows the operation part of an electric control unit. It is a cross-sectional top view of a diffusion discharge mechanism. It is a vertical side view of a feeding mechanism. It is a cross-sectional plan view of a feeding mechanism. It is a vertical front view of a feeding mechanism. It is a disassembled perspective view of a feeding mechanism. It is a figure which shows the sealing member arrangement | positioning state of a casing. It is an electric circuit diagram of a medicine spreader. It is a flowchart of control operation. It is a figure which shows the relationship between an adjustment operation position and opening operation time. It is a flowchart of control operation of another embodiment.

Hereinafter, based on drawings, the case where the granular material spraying device according to the present invention is applied to a medicine spraying device equipped in a riding type rice transplanter will be described.
As shown in FIG. 1, the riding type rice transplanter includes an engine 4 and a transmission case 5 on the front side of a traveling machine body 3 including a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered. The traveling unit 3 includes a steering unit 7 equipped with a steering handle 6 and the like and a driver seat 8 at the center of the traveling unit 3, and reserve seedling platforms 9 are disposed on the left and right sides of the traveling unit 3. A seedling planting device 12 is connected to the rear of the traveling machine body 3 so as to be movable up and down via a link mechanism 11 by operating a lift cylinder 10. The seedling planting device 12 has, for example, weeding as a granular material behind the seedling planting device 12. A drug spraying device 13 as a powder particle spraying device for spraying a drug such as a drug is provided. As shown in FIG. 2, the seedling planting device 12 is configured in a four-row planting type. The mission case 5 is provided with a hydrostatic continuously variable transmission (not shown) that is operated to change speed by operating the speed change lever 16.

As shown in FIGS. 1 and 2, the seedling planting device 12 includes two transmission cases 15 that are rearwardly mounted on a support frame (not shown) that is connected to a single feed case 14 and extends in the left-right direction. It is connected in a holding form. A planting arm 18 is supported by the crank mechanism 17 so as to be swingable up and down on both the left and right sides of the rear portion of the transmission case 15, and a planting claw 22 is provided on the planting arm 18. A grounding float 19 is supported on.
In addition, the seedling planting device 12 is provided with a seedling platform 20 so that it can be driven back and forth by a fixed stroke to the left and right. Each time the seedling platform 20 reaches the stroke end, the seedling planted is placed. A belt-type vertical feeding device 21 that feeds a fixed amount downward is provided on the seedling table 20.

  The power transmitted to the feed case 14 is transmitted to the transmission case 15 and the planting arm 18 is driven. On the other hand, the seedling table 20 is driven to reciprocate laterally by the power transmitted to the feed case 14. The planting arm 18 that swings up and down from the lower part of the seedling platform 20 takes out the seedlings one by one with the planting claws 22 provided at the tip of the planting plant, and plants the seedling platform 20 back and forth. When the stroke end of the lateral feed is reached, the vertical feed device 21 is driven by the power transmitted to the feed case 14 so that the seedling placed on the seedling raising table 20 is sent downward.

Next, the medicine spraying device 13 will be described.
As shown in FIGS. 1 to 3, a support column 23 </ b> B is fixedly erected from an intermediate portion of a support frame 23 </ b> A fixed and installed on the transmission cases 15 on both the left and right sides.
In the seedling planting state, the medicine spraying device 13 is supported in a state of being positioned above a set distance from the rice field. As shown in FIGS. 4 and 5, the medicine spraying device 13 serves as a storage hopper 24 as a storage part for storing the medicine, and a feeding means for feeding out the medicine stored in the lower part of the storage hopper 24. 5 controls the operation of the feeding mechanism 25, the diffusion / release mechanism 27 as a rotary diffusing means for diffusing the medicine that is fed and dropped and supplied through a guide passage 26 (see FIG. 5) as a feeding path. And an electric control unit 28 for this purpose.

  The feeding mechanism 25 and the diffusion / release mechanism 27 are configured to be accommodated in a casing 29. The casing 29 is made of a synthetic resin material and forms a guide passage 26 that drops and supplies the medicine to the diffusion / release mechanism 27. The part 30 is integrally formed. As shown in FIGS. 3, 5, and 6, the casing 29 has a left and right split structure in which split casing portions 29 a and 29 b (an example of a case unit body) on both the left and right sides are connected at mating surfaces w. .

  Then, as shown in FIG. 13, among the mating surfaces w of the left and right divided casing portions 29a and 29b, the mating surface portion w2 other than the lower mating surface portion w1 corresponding to the lower surface 29A of the casing 29, that is, A waterproof seal material Si for preventing water from entering the inside of the casing 29 is provided on the mating surface portion w <b> 2 corresponding to the upper surface and the side surface of the casing 29. In this way, by providing the sealing material Si on the mating surface portion w2 other than the lower mating surface portion w1 among the mating surfaces w of the left and right divided casing portions 29a and 29b, for example, cleaning performed after rainwater or after the work is completed. Even if water may fall during the operation, it is possible to prevent water from entering the inside of the casing 29, particularly, the inside of the cylindrical portion 30 through which the medicine passes. Note that the lower mating surface portion w1 located at the location corresponding to the lower surface 29A of the casing 29 is less likely to be infiltrated with rain water or cleaning water as described above. I am doing so.

  As shown in FIG. 5, the feeding mechanism 25 opens the metal opening forming plate 32 in which the medicine passage opening 31 is formed, the closed state in which the passage opening 31 is closed, and the medicine passage opening 31. A metal shutter member 33 that is slidable in the open state and a solenoid 34 as an actuator that switches the shutter member 33 between a closed state and an open state are provided.

As shown in FIGS. 9, 10, and 11, the opening forming plate 32 and the shutter member 33 are provided so as to overlap each other, and the shutter member 33 is closed when the passage opening 31 formed on the opening forming plate 32 is closed. When the supply of the medicine is stopped and the shutter member 33 is slid to the position where the passage opening 31 is opened, the passage opening 31 is opened and opened, and in this opened state, the medicine passes through the passage opening 31. It is configured to be dropped and supplied downward.
In this configuration, only the shutter member 33 exists on the lower side of the passage opening 31, and no other member exists on the lower side of the shutter member 33.

  The opening forming plate 32 is formed with a downward bent piece 32b bent downward at the opening side end portion of the horizontal surface portion 32a where the passage opening 31 is formed, and upward at the solenoid 34 side end portion opposite thereto. An upward bent piece 32c that is bent toward the top is formed. In addition, the shutter member 33 is surrounded from above and below in order to prevent the shutter member 33 from separating downward at both sides in the width direction at the intermediate portion between the opening side end portion of the horizontal plane portion 32a and the solenoid 34 side end portion. Thus, a holding portion 32d that is bent in a substantially U-shape is formed. That is, the opening forming plate 32 is formed with a downward bent piece 32b, an upward bent piece 32c, and a holding portion 32d by bending one plate.

  In the opening forming plate 32, the downward bent piece 32 b is engaged with a locking recess 35 formed on the inner side of the cylindrical portion 30 of the casing 29, and the shutter member 33 slides in a direction close to the solenoid 34. The continuous movement is restricted, and the upward bent piece 32c is engaged with the outer edge 36 of the cylindrical portion 30 of the casing 29 so that the shutter member 33 slides away from the solenoid 34. Is configured to be restricted from moving in a row.

  As shown in FIG. 12, the passage opening 31 is horizontally long so that the opening width L1 in the direction along the moving direction of the shutter member 33 by the solenoid 34 is smaller than the opening width L2 in the direction orthogonal to the moving direction. The moving operation amount of the shutter member 33 by the solenoid 34 can be shortened while the opening area is sufficiently large.

  The shutter member 33 is formed in a band plate shape, and is configured to be pivotally connected to the operation rod 37 of the solenoid 34 by a connection pin 38, and is provided in a state of being in contact with the lower side of the opening forming plate 32. The holding portion 32d prevents the opening forming plate 32 from being separated vertically. Further, as shown in FIGS. 9 and 10, the medicine that fits between the opening forming plate 32 and the shutter member 33 falls downward at a position closer to the solenoid 34 side than the opening shielding position 33 </ b> A of the shutter member 33. Therefore, a scraping hole 39 penetrating in the vertical direction is formed.

As shown in FIG. 5, a solenoid storage chamber 40 as a storage space for storing the solenoid 34 is formed at one side of the cylindrical portion 30 in the casing 29, and diffusion emission is performed at the opposite side. A motor storage chamber 42 is formed as a storage space for storing the electric motor 41 in the mechanism 27. A slit hole 43 through which the shutter member 33 and the opening forming plate 32 are inserted is formed in the side wall of the cylindrical portion 30 on the solenoid housing chamber 40 side.
As shown in FIG. 9, a wide guide portion 44 for holding the opening forming plate 32 and the shutter member 33 in a horizontal posture is formed above the slit hole 43, and the upper surface of the wide guide portion 44. In addition, an inclined surface 45 that is inclined downward toward the passage opening 31 is formed over the entire width. Further, on both sides in the width direction on the upper side of the slit hole 43, both side guide portions 46 for preventing the opening forming plate 32 from being lifted are formed.

  A lower guide portion 47 that receives and supports the shutter member 33 is formed on both sides in the width direction on the lower side of the slit hole 43, and below the scraping hole 39 when the shutter member 33 is switched to the open state. A wide discharge space 48 is formed so that the drug discharged from can be guided to the diffusion / release mechanism 27 (see FIG. 9).

  A passage opening 31 is formed in a state where the slit hole 43 for inserting the shutter member 33 and the opening forming plate 32 is formed in a state of being close to the opposite side of the passage width direction. The cross-sectional shape of the passage 26 is formed in a substantially quadrangular shape in plan view, but the width of the guide passage 26 in the direction along the radial direction is gradually increased toward the outlet 54 side below the discharge space 48. The inclined surface 56 is formed so as to be narrow, and the width is sequentially narrowed, and the narrow portion is configured such that the drug that has passed through the passage opening 31 falls in a straight line without resistance. Has been. In this way, the delivered medicine can be guided and supplied well toward the diffusion / release mechanism 27 in a state where the flow resistance is low.

  As shown in FIG. 9, the shutter member 33 is moved and urged to the closed position (position where the passage opening 31 is closed) by the coil spring 49 provided in the solenoid 34 acting on the connecting pin 38 via the washer 50. The solenoid 34 is configured to be moved to an open position (a position where the passage opening 31 is opened) by performing a pulling operation against the urging force of the coil spring 49 by energizing the solenoid 34.

  As shown in FIGS. 5 and 8, the diffusion / release mechanism 27 includes a receiving surface 51 </ b> A in a lateral orientation, and a receiving body 51 that is driven and rotated around a vertical rotation axis, and stands on the receiving surface 51 </ b> A. The diffusion blade body 52 and the electric motor 41 that rotationally drives the receiving body 51 around the vertical rotation axis Y are configured.

  The receiving body 51 has a disk shape provided such that the plate surface is in a horizontal posture while rotating around the vertical axis Y, and the diffusion blades 52 are arranged in a distributed manner along the circumferential direction. And a plurality of radiating elements are provided in a state in which they are close to the radially outer side from the rotational axis Y of the receiving body 51. Therefore, the surrounding area including the rotation axis Y in the receiving body 51 is formed as a bladeless area Q where the diffusion blade 52 does not exist over the entire circumferential direction.

  Specifically, as shown in FIG. 8, six diffusion blade bodies 52 are provided in a state of being distributed and arranged at regular intervals of about 60 degrees along the circumferential direction. The body 52 has a lateral width corresponding to about half the distance of the radius of the receiving body 51 and has a height corresponding to a distance approximately half of the lateral width. It is configured to stand at a position close to the side.

  As shown in FIG. 5, the inner end edge in the radial direction of the diffusion blade body 52 is formed as an inclined edge 52 </ b> A that becomes higher toward the radially outer side. The upper end edge of the diffusion blade body 52 is formed horizontally, and the vertical height of the diffusion blade body 52 is formed so as to be lower toward the radially outer side by the inclination of the receiving surface 51A of the receiving body 51. ing.

  The receiving body 51 and the diffusing blade body 52 are integrally formed of a synthetic resin material. The receiving body 51 has a cylindrical shaft portion 80 that is fitted around the drive shaft 53 of the electric motor 41. Also, the cylindrical shaft portion 80 is configured such that the screw bi attached to the drive shaft 53 of the electric motor 41 and fitted sideways is pressed against the drive shaft 53 and the receiving body 51 is connected to the drive shaft 53. And are connected so as to rotate together.

  As shown in FIG. 5, the disc-shaped receiving body 51 has a shape in which the central portion protrudes downward, and the receiving surface 51 </ b> A located on the upper side of the receiving body 51 is closer to the rotation axis Y side. It is formed in the inclined surface of the center dent shape located in the downward direction. By configuring in this way, the function of leveling the drug in the circumferential direction is more easily exhibited.

  A ceiling wall 58A for partitioning the upper side is provided on the upper side of the receiving body 51. On the outer peripheral side of the receiving body 51, the drug is diffused and released outward from a part of the circumferential direction. And a drug that is diffused and released outwardly from other regions in the circumferential direction of the receiving body 51 on both side portions of the regulating vertical wall 58B. Diffusion direction adjusting plates 59 and 60 for adjusting the diffusion and emission direction are provided.

As shown in FIG. 6, the diffusion direction adjusting plates 59 and 60 are attached to the ceiling wall 58A by bolts Bo, and the diffusion of the drug is performed by loosening the bolts Bo, changing the left-right rotation position, and tightening again. The discharge direction (opening angle) can be changed and adjusted.
In changing and adjusting the diffusion and release direction (opening angle) of the drug, the diffusion direction adjusting plates 59 and 60 are arranged around the vertical axis with respect to the ceiling wall portion 58A instead of the position adjustment by loosening the bolt Bo. It may be configured to be pivotable and attached in a state where the position is maintained by friction, and to be able to change the position to an arbitrary operation position against the frictional holding force by manual operation.

  The regulating vertical wall 58B is provided in a state of being integrally formed with the casing 29, and in the vicinity of the outer peripheral edge of the receiving body 51 so as to cover the outer peripheral portion of the receiving body 51 along the circumferential direction for about a half circumference. It is formed in a semicircular arc shape in plan view so as to have a predetermined vertical width and along the outer peripheral edge.

  Next, the medicine spraying device 13 is provided with a control device 66 as a control means for controlling the operation of the feeding mechanism 25 and the diffusion / release mechanism 27. The control device 66 has a set amount of medicine per unit area of the field. And a normal spraying operation for operating the diffusion / release mechanism 27 so as to cause the medicine to diffuse and release to the field in a normal work drive state that is rotationally driven at the normal work rotation speed. The feeding mechanism 25 is operated so as to feed out the medicine with the feeding amount equivalent to the feeding amount in the normal working mode and the normal working mode, and is diffused in the metering driving state in which the drug splash is less than the normal working driving state. It is configured to be switchable to a measuring mode for executing a measuring operation for operating the discharge mechanism 27.

  Further, the control device 66 is based on the operation of a potentiometer-type spread amount adjuster 68 as a manually operated adjustment operation tool that can be operated within an operation range between the minimum adjustment position and the maximum adjustment position. As the adjustment operation state when adjusting the drug delivery amount, the operation position of the spray amount adjuster 68 is changed from the minimum adjustment position to the maximum adjustment position. Switch to one of two adjustment operation states in which the amount of medicine delivered is different when the amount of medicine delivery changes in a gradually increasing manner and the operating position of the spray amount adjuster 68 is the same. A changeover switch 69 as an adjustment operation tool, which is an example of an adjustment operation state switching means K that is configured freely and that commands switching of the adjustment operation state of the control device 66, is provided.

Hereinafter, a specific control configuration for adjusting the feed amount will be described.
As shown in FIG. 14, the control device 66 is provided in the electric control unit 28. Further, the traveling body 3 is not equipped with a rechargeable battery, and the generator 61 as an external power source driven by the engine 4 (for example, a generator provided for lighting a headlamp or the like) is used. The electric power generated in this way is supplied to the electric control unit 28. Since the traveling machine body 3 is not equipped with a battery, the engine 4 is configured to be started by a recoil-type starting device (not shown).

  The electric control unit 28 rectifies the AC power supplied from the generator 61 via the power on / off switch 62 by the rectifier circuit 63, adjusts the voltage to 12V DC by the first regulator circuit 64, and adjusts the DC 12V voltage. The power is configured to be used as power for driving the electric motor 41 and the solenoid 34, and the voltage of the output of the first regulator circuit 64 is adjusted to 5V DC by the second regulator circuit 65 to drive the control device 66. The circuit is configured to be used as electric power. The DC 12V power is configured to be supplied to the solenoid 34 via a switching transistor 67 that is on / off controlled by the controller 66.

  The DC 12V power is also supplied to the electric motor 41, but the control device 66 adjusts the power supplied to the electric motor 41 by, for example, pulse width modulation, and the Hall element that detects the rotation speed of the electric motor 41. And the rotation sensor 72 is provided. The control device 66 feeds back the detection result of the rotation sensor 72 to the control device 66 so that the receiving body 51 is rotated at the set rotational speed. The drive state of the electric motor 41 is controlled so as to adjust the power supplied to the electric motor 41 by changing the duty ratio of the pulse signal output to 71.

  With this configuration, for example, even if the power supply voltage fluctuates due to fluctuations in the power generation state by the generator 61, the electric motor 41 causes the receiving body 51 to be moved at the set rotational speed. It is configured to be able to rotate.

  Although not shown, the rotation sensor 72 is mounted in a state where the terminals are soldered and fixed to a small printed wiring board, and the upper side thereof is for insulation on the printed wiring board. The resist film is waterproofed, and the soldered portions are separately sealed with a moisture-proof sealing material.

  Incidentally, as the set rotational speed at which the receiving body 51 rotates, a high-speed normal work rotational speed is set in the normal work mode, and a low-speed measurement rotational speed is set in the measurement mode. The

  As shown in FIG. 14, the changeover switch 69 and the power on / off switch 62 are configured by a single rotary switch RS, which can be switched to three positions and operated at the center “off” position. Then, the power on / off switch 62 is turned off, and when operated to the “A” position and the “B” position, the power on / off switch 62 is turned on and the difference between the “A” position and the “B” position is as described above. The control operation state of the control device 66 is switched to a different one.

  As shown in FIG. 7, one rotary switch RS that also serves as the changeover switch 69 and the power on / off switch 62 and the spread amount adjuster 68 are arranged side by side on the operation panel surface 73 on the lateral side surface of the casing 29. ing. The operation panel surface 73 is provided with a push-operation type weighing switch 74 for setting a weighing mode.

Next, setting of the adjustment operation state in the control device 66 will be described.
When the rotary switch RS is operated to the “A” position, the set time for the opening operation for switching the solenoid 34 to the open state as the operation position of the spray amount adjuster 68 changes from the minimum adjustment position to the maximum adjustment position. The opening operation time when the adjustment operation state (corresponding to the delivery amount of the medicine) (hereinafter referred to as the opening operation time) changes in a gradually increasing manner and the operation position of the spray amount adjuster 68 is the same. A first adjustment operation state T1 that is reduced is set (see FIG. 16).

  Further, when the rotary switch RS is operated to the “B” position, the adjustment that changes in such a manner that the opening operation time gradually increases as the operation position of the spray amount adjuster 68 changes from the minimum adjustment position to the maximum adjustment position. A second adjustment operation state T2 is set in which the opening operation time when the operation position is the same and the operation position of the spread rate adjuster 68 is the same as that of the first adjustment operation state T1 (see FIG. 16). .

  By the way, when using a medicine that supplies a small amount per unit area of the field, the first adjustment operation state T1 is used, and when using a medicine that supplies a large amount per unit area of the field. The second adjustment operation state T2 is used.

  A vertical feed detection sensor 82 for detecting that the vertical feed device 21 in the seedling planting device 12 has been fed is provided, and the output of the vertical feed detection sensor 82 is input to the control device 66. As will be described later, in the normal work mode, the spraying process is performed based on the detection information of the vertical feed detection sensor 82.

  As shown in FIG. 5, the electric control unit 28 has the above-described electric components mounted on a printed wiring board and is housed in a casing 29. Further, as shown in FIG. 14, the electric wiring 77 between the electric control unit 28 and the traveling machine body 3 is configured to be freely connected and disconnected by a connector 78 provided in the middle. The unit 28 and the connector 78A on the drug spraying device side of the connector 78 are connected by an electric wiring 77 on the electric control unit 28 provided inside the casing 29.

  As shown in FIGS. 5 and 6, the connector 78A of the connector 78 in the connector 78 is mounted on the casing 29 so as to be sandwiched between the mating surfaces w of the left and right divided casing portions 29a and 29b. In other words, attachment portions 90 for sandwiching and attaching the connecting tool 78A from both the left and right sides are formed in the left and right divided casing portions 29a and 29b at locations corresponding to the lower surface 29A of the casing 29. The attachment portion 90 is formed in a shape that bulges outward (downward) from the lower surface 29A of the casing 29, and a portion (attachment) where the case inner portion of the connector 78A bulges outward. Part 90).

  With this configuration, the outer shape of the casing 29 is not limited by the arrangement of the members accommodated inside the casing 29, particularly, in this embodiment, the arrangement of the electric control unit 28, the solenoid 34, and the like. The connector 78A can be deployed while maintaining a compact shape.

  When assembling the medicine spraying device 13, the divided casing portions 29a and 29b on both the left and right sides are plural in a state where they are aligned so as to be connected at the mating surface w with the electric motor 41 and the solenoid 34 incorporated therein. The parts are screwed together to be integrally connected as a single casing 29. When connecting the divided casing parts 29a and 29b on both the left and right sides, the connecting tool 78A is attached to the mounting portion 90. It is mounted in a state of being sandwiched.

And, as shown in FIGS. 3, 5, 6 and 7, the connection tool 78A is inserted and mounted with the counterpart connection tool 78B as a connection tool on the external power supply side facing upward from below. The insertion port 78 </ b> A <b> 1 is provided in a state where it opens downward and is located on the lower surface side of the casing 29.
Further, as shown in FIG. 5, the lowermost part of the lower mating surface portion w1 on the lower surface of the casing 29, that is, the upper part of the connector 78A as the attachment part for sandwiching and attaching from the left and right sides. A drainage opening k as a drainage hole is formed in the attachment portion 90, and even if moisture enters the casing 29, it is configured to be discharged outward through the opening k.

  In the state where the connection of the connector 78 is released and the electric wiring 77 is separated, the entire medicine spraying device 13 can be easily attached to and detached from the support column 23B. That is, as shown in FIG. 4, the support bracket 89 bent in an L shape in side view is fixed to the casing 29 in a screwed state, while the L-shaped receiving tool 88 in a side view is fixed to the upper portion of the column 23B. The receiver 88 is provided with a pair of left and right buckle mechanisms 87.

A lower receiving portion 88B for receiving and supporting the lower end edge 89A of the support bracket 89 is formed at the lower end of the vertical surface portion 88A of the receiving device 88, and the support bracket 89 is formed above the vertical surface portion 88A. The upper receiving portion 88C that is formed by engaging and engaging with the formed engagement hole 89B is formed, and the vertical surface portion 88A of the receiving device 88 and the vertical surface portion 89C of the support bracket 89 are in contact with each other. In the state where the support brackets 89 are received by the receiving portions 88B and 88C, the left and right buckle mechanisms 87 are engaged with the locking portions 89D formed on the support bracket 89, and the position can be held freely. It is configured to be removably supported.
As a result, when the traveling machine body 3 and the seedling planting device 12 and the like are washed with water after the work is completed, the entire medicine spraying device 13 can be removed by removing the buckle mechanism 87.

Next, the control operation of the control device 66 will be described.
As shown in FIG. 15, when the engine 4 is started and the rotary switch RS is operated from the “OFF” position to the “A” position or the “B” position to start the control device 66, the normal operation mode is set and received. The electric motor 41 is driven and controlled so that the stopper 51 rotates at the normal working speed. Then, seedling planting work by the riding type rice transplanter is started in a state where the measuring switch 74 is not operated, and the vertical feed detection sensor 82 detects that the feed operation of the vertical feed device 21 has been performed a set number of times, Each time a detection signal (an example of a work signal for feeding) is input from the feed detection sensor 82, the shutter member 33 is switched to the open state only while the opening operation time set as described above elapses. Thereafter, an opening operation (normal feeding operation) for controlling the operation of the solenoid 34 so as to return to the closed state is executed.

  When the feed operation of the vertical feeding device 21 is performed a set number of times, the traveling machine body 3 travels a set distance, so that the riding type rice transplanter executes the seedling planting operation by executing the spraying operation as described above. When traveling, the traveling body 3 travels a set distance, and an amount of medicine corresponding to the opening operation time of the solenoid 34 is set in a region (medicine supply target region) where existing seedlings corresponding to the set condition exist. By repeatedly executing the operation of spraying and supplying the medicine, a predetermined amount of medicine can be supplied per unit area of the field. Such an operation corresponds to the normal spraying operation.

When the weighing switch 74 is continuously pressed for a set time (several seconds) or longer in such a state of being set to the normal work mode, the mode is switched to the weighing mode. When the mode is switched to the metering mode, the electric motor 41 is driven and controlled so that the receiving body 51 rotates at the metering rotational speed even when the detection signal from the vertical feed detection sensor 82 is not input, and the normal operation mode is set. The opening operation of the solenoid 34 (metering feeding operation) is repeatedly executed for the set number of times so that the medicine is fed by the feeding amount equivalent to the feeding amount in step. Such an operation corresponds to the weighing operation.
Thus, to switch to the weighing mode, it is necessary to press and hold the weighing switch 74, so that if the switch is accidentally operated only for a short time, the mode is not switched to the weighing mode against the operator's will. .

  Note that another mode of switching to the weighing mode by operating the weighing switch 74 may be different modes, such as a mode of switching to the weighing mode when the pressing operation is repeated more than a set number of times within a predetermined time.

  When the measurement operation is further described, when it is set to spray a predetermined amount of medicine per unit area (for example, 10a) of the field in the normal work mode, the predetermined amount of medicine is fed out. The feeding mechanism 25 is switched to the open state for a preset number of times required for the operation. At that time, the medicine released by a collection container (not shown) prepared in advance so as to surround the outer periphery of the diffusion / release mechanism 27 is collected, and the amount of the medicine is measured.

  After the weighing operation is completed, when the weighing switch 74 is pressed again for a long time or when a detection signal from the longitudinal feed detection sensor 82 is input, the receiving body 51 is rotated at the normal work rotation speed. A normal spraying operation is performed until the electric motor 41 is returned to the state where the electric motor 41 is driven to rotate and the rotary switch RS is operated to the “OFF” position.

  Another mode of switching from the weighing mode to the normal work mode by operating the weighing switch 74 is a different mode, for example, a mode in which the mode is switched to the normal work mode when the pressing operation is repeated a predetermined number of times within a predetermined time. It's okay.

[Another embodiment]
(1) In the above embodiment, the connector 78A on the drug spraying device side of the connector 78 includes the insertion port 78A1 that opens downward, and the connector 78B on the external power supply side is plugged in from the lower side upward. However, instead of such a configuration, a configuration in which the connection tool 78A is provided in a state in which the insertion port 78A1 is opened sideways or a connection tool 78A is provided in the casing 29 is shown. It is good also as a structure provided in the horizontal side surface or upper surface.

(2) In the above-described embodiment, a case where the sealing material Si for waterproofing is provided at the connection portion of the mating surface w in the casing 29 is shown. However, as a configuration in which such sealing material Si is not provided, A configuration in which the mating surfaces of the divided casing portions 29a and 29b are fitted to each other may be configured to have a waterproof function by the fitting.
In the above embodiment, the casing 29 is divided into the split casing portions 29a and 29b that are divided on both the left and right sides. Etc., and can be implemented in various forms.

(3) In the above-described embodiment, the drainage opening k is formed in the attachment location 90 of the connection tool 78A in the casing 29. However, the drainage is provided at a location different from the attachment location 90 of the connection tool 78A. It may be formed as a dedicated opening k, or may be configured without such a drain opening k.

(4) In the above embodiment, the generator 61 provided in the traveling machine body 3 is used as the external power source. However, if the traveling machine body 3 is provided with a rechargeable battery, this battery is used as the external power source. It may be used.

(5) In the above-described embodiment, the electric motor 41 is rotated at the normal work rotation speed when the control device 66 is started, but may be configured as follows.
That is, when the control device 66 is turned on and activated, the controller 66 is configured to be set in a preliminary mode for controlling the operation of the diffusion / release mechanism 27 so as to rotate at the measurement rotational speed. When the start of weighing is instructed by the weighing switch 74 as the weighing command means, the mode may be switched to the weighing mode, and when the start of work is commanded in the preliminary mode, the mode may be switched to the normal work mode.

A specific control operation will be described based on the description of FIG.
When the engine 4 is started and the rotary switch RS is operated from the “OFF” position to the “A” position or the “B” position to start the control device 66, the receiving body 51 is electrically driven so as to rotate at the measuring rotational speed. The drive of the motor 41 is controlled (preliminary mode). Thereafter, when the measuring switch 74 is turned on, the electric motor 41 is driven and controlled so that the receiving body 51 rotates at the measuring rotational speed, and the feeding amount is equal to the feeding amount in the normal operation mode. The operation of opening the solenoid 34 (measurement feeding operation) is repeatedly executed a set number of times so as to feed out the medicine.

  When the detection signal (feeding work signal) is input from the vertical feed detection sensor 82 in the preliminary mode in which the electric motor 41 is rotating at the measuring rotational speed, the operation mode is switched to the normal work mode, and the receiving body 51 Drives and controls the electric motor 41 so as to rotate at the normal working speed. Thereafter, every time a detection signal is input from the vertical feeding device 21, the opening operation time set based on the information on the adjustment operation state based on the operation of the changeover switch 69 and the adjustment position of the spread amount adjuster 68 elapses. Only during that time, the shutter member 33 is switched to the open state, and thereafter, an open operation operation (normal feeding operation) is performed to control the operation of the solenoid 34 so as to return to the closed state. Such normal spraying operation is executed until the rotary switch RS is operated to the “OFF” position.

(6) In the above embodiment, as the metering drive state in the metering mode, the diffusion release is performed so that the medicine is rotated at the metering rotational speed until the set amount of medicine is fed out by the feeding mechanism 25 and the feeding operation is stopped. Although the operation of the mechanism is controlled, the following (6-1) and (6-2) may be used instead of such a configuration.
(6-1) The control device 66 sets the feeding mechanism 25 as the metering drive state in the metering mode for the set number of times set in advance as necessary for feeding out a predetermined amount of medicine, as in the above embodiment. The rotation of the electric motor 41 in the diffusion / release mechanism 27 is stopped until the set amount of medicine is delivered by the delivery mechanism 25 and the delivery operation is stopped by switching to the open state. Then, after the medicine delivery operation by the delivery mechanism 25 is stopped, the electric motor 41 is rotated for a set time (for example, several seconds), and the medicine placed on the receiving body 51 is removed from the outer collection container. The structure which controls the action | operation of the electric motor 41 in the diffusion discharge | release mechanism 27 so that it may discharge | release to (not shown).
(6-2) The control device 66 sets the feeding mechanism 25 as the metering drive state in the metering mode as many times as the preset number of times required to feed out a predetermined amount of medicine as in the above embodiment. The rotation state and the rotation stop state appear alternately for a predetermined short period of time (for example, several seconds) until switching to the open state and feeding the set amount of medicine by the feeding mechanism 25 and stopping the feeding operation. The structure which controls the action | operation of the electric motor 41 in the diffusion discharge | release mechanism 27 by a form.

(7) In the above embodiment, the adjustment operation state switching means K is configured as the manual operation type switching operation tool configured by the changeover switch 69 that is switched by the rotary switch RS. Instead, the following (7-1) (7-2) (7-3) may be used.
(7-1) A switch composed of a toggle type switch that can be switched between two positions or a pair of push operation type switch.
(7-2) Instead of using a manually operated switching operation tool, switching operation information may be commanded from the traveling machine body 3 side, and the adjustment operation state may be switched based on the command information. For example, a configuration in which information on an operation tool (not shown) provided in the control unit 7 of the traveling machine body 3 is transmitted to the control device 66 via a connector 77 that can be connected and separated by the connector 78, or the traveling machine body 3 The switching information preset for each shipping country or shipping region in the control device on the side may be transmitted to the control device 66 via the wiring 77 in accordance with the setting change on the machine side at the time of shipment.
(7-3) The type of the granular material is not limited to two types, and may be configured to switch to three or more adjustment operation states in order to correspond to three or more types of granular material.

(8) In the above-described embodiment, the switch constituted by the push-operation type weighing switch 74 is shown as the switch for instructing the switching to the weighing mode. Various types of switches such as switchable switches and rotary switches can be used. Also, a switch dedicated to start weighing to switch to the weighing mode and weighing to release the weighing mode and switch to the normal work mode. The present invention can be implemented in various forms such as a configuration in which a release-dedicated switch is provided.

(9) In the above-described embodiment, the shutter member 33 is opened and closed by the solenoid 34 as the feeding mechanism 25, and the passage opening 31 is opened and closed by the opening forming plate 32 and the shutter member 33. Instead of the configuration, for example, in addition to the opening forming plate 32 in which the passage opening 31 is formed and the shutter member 33 that is slidable by the solenoid 34, a leaf spring type that elastically pushes the shutter member 33 from below. Various configurations such as a three-layer structure in which the pressing members (not shown) are vertically stacked can be used. Further, the feeding mechanism 25 is not limited to the configuration driven by the solenoid 34, for example, a configuration in which the shutter member 33 is mechanically opened and closed using the rotational power of the planting arm 18 of the seedling planting device 12. For example, it can be implemented with various configurations.

(10) In the above embodiment, the solenoid 34 is controlled to switch the shutter member 33 to the open state every time it is detected that the feed operation of the vertical feed device 21 has been performed a set number of times. Instead, the shutter member 33 may be switched to the open state every time the traveling machine body 3 travels a set distance.

(11) In the above-described embodiment, the powder is sprayed with the drug. However, the powder is not limited to the drug, and other powder particles such as fertilizer and seeds may be sprayed. Moreover, in the said embodiment, although the granular material spreading | diffusion apparatus showed what was mounted | worn by the rear part of a riding type rice transplanter, it replaced with such a structure and the operation | work which steers a walking type rice transplanter while walking in a farm field It may be a granular material spraying device in which the spraying work is carried on the person's back.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a granular material spraying device that is configured to feed and diffuse a granular material by a set amount.

Reference Signs List 24 Reservoir 25 Feeding means 27 Diffusion means 29 Casing 29A Lower surface 29a, 29b Case unit body 40, 42 Storage space 41 Electric motor 61 External power supply 77 Electrical wiring 78 Connector 78A Connection tool 78A1 Insert port 78B External power supply side connection tool 90 Expansion Protruding section k Drain hole Si Sealing material w Mating surface

Claims (6)

Housed in the casing are a feeding means for feeding the powder stored in the storage section, and a rotary diffusing means that is rotated by an electric motor and diffuses and discharges the powder fed from the feeding means to the field. It is provided in a state that is, is a powder and particle dispersion device configured to be supplied to the electric motor from an external power supply via electrical wiring,
The casing is configured by a split structure that connects a pair of case unit bodies at a mating surface to form a storage space for storing the feeding means and the electric motor,
A granular material spraying device mounted on the casing in a state where a connector on the granular material spraying device side of the connector that can connect and separate the electrical wiring is sandwiched between mating surfaces of the case unit bodies.   The granular material spraying device according to claim 1, wherein the connector includes an insertion port that opens downward, and the connector on the external power supply side is configured to be inserted and mounted from the lower side toward the upper side.   The granular material spraying apparatus of Claim 1 or 2 with which the said connection tool is provided in the lower surface of the said casing.   The granular material spreading | diffusion apparatus of any one of Claims 1-3 in which the sealing material for waterproofing is provided in the connection location of the said mating surface in the said casing.   The granular material spreading | diffusion apparatus of any one of Claims 1-4 in which the drain hole is formed in the mounting location of the said connection tool in the said casing.   The bulging part which bulged to the case outward side is formed in the connection location of the said mating surface in the said casing, The said connection tool is mounted | worn with the bulging part. Granule spraying equipment.

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