JP2012147734A - Granule spraying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a granule spraying apparatus that can accurately perform adjustment operation of a delivery amount even when using plural kinds of granules with greatly different spraying amount required per unit area of a place to be sprayed.SOLUTION: The granule spraying apparatus includes: a delivering unit 25 for delivering the granules stored in a storage part 24; a spreading unit 27 for spreading and releasing the granules delivered from the delivering unit 25 to a field, a delivery amount adjustment unit which can freely change and adjust the delivery amount of the granules by the delivering unit 25 based on operation of an adjustment operation tool; and an adjustment operation state switching unit for directing switching of the adjustment operation state when adjusting the delivery amount of the granules by the delivery amount adjustment unit.

Description

  The present invention is provided between a minimum adjustment position and a maximum adjustment position, a feeding means for feeding the granular material stored in the storage section, a diffusion means for diffusing and releasing the granular material fed from the feeding means to the field. A granular material spraying device provided with a feeding amount adjusting means capable of changing and adjusting a feeding amount of the granular material by the feeding means based on an operation of a manually operated adjustment operating tool which can be operated within an operating range. About.

  In the above-mentioned granular material spraying device, conventionally, the feeding unit is configured to feed out the drug as an example of the granular material by a predetermined amount by the eye plate reciprocally moved by the actuator, and the control device as the feeding amount adjusting unit is, There has been a configuration in which the actuator is controlled so that the feed amount is set by a user with a manually operated adjustment operation tool (see, for example, Patent Document 1).

JP 2003-304793 A

  In the conventional configuration, when only one kind of powder (medicine) that supplies a certain amount per unit area of the field (for example, about 1 kg per 10 ares) is used, the adjustment operation tool It is possible to easily set the feeding amount. However, recently, as a granular material (medicine) to be sprayed on the field, a large amount of granular material (medicine, for example, about 3 kg per 10 ares) per unit area of the field compared to the conventional ones (medicine) ) Is used, and the required amount of powder and the amount of spray that is required per unit area of the target area (hereinafter referred to as the required supply) is small. Although it is desirable that any of the granular materials be dispersed using the same granular material dispersing device, if the above-described conventional configuration is used as it is, an adjustment operation tool for each of these different types of granular materials. It is difficult to perform an adjustment operation for setting a desired feeding amount.

  Therefore, in order to adjust the feeding amount of the granular material having a large necessary supply amount and the granular material having a small necessary supply amount by using a conventional granular material spraying device, the feeding amount by the adjusting operation tool It is conceivable to increase the adjustment range.

  However, with this configuration, the entire operating range in which the adjustment operation tool should be operated is widened, and when adjusting the feed amount using any type of powder or granular material, the adjustment operation tool is operated. The power range should be adjusted using only a portion of the total range. As a result, it is difficult to perform adjustment operations with the adjustment operation tool, such as a large change in the amount of powder delivered by operating the adjustment operation tool slightly, and there is a disadvantage that the adjustment of the feed amount cannot be performed accurately. is there.

  The object of the present invention is to accurately adjust the feed amount even when using a plurality of types of powder particles that are significantly different in the amount of spraying required per unit area of the spraying target location. It is in the point which provides a granular material spraying apparatus.

  The granular material spraying device according to the present invention includes a feeding unit that feeds the granular material stored in the storage unit, a diffusing unit that diffuses and releases the granular material fed from the feeding unit to the field, and a minimum adjustment position. A feed amount adjusting means capable of changing and adjusting a feed amount of the granular material by the feed means based on an operation of a manually operated adjustment operation tool operable within an operation range between the maximum adjustment position and a maximum adjustment position; The first feature of the present invention is that, as the adjustment operation state when the supply amount adjusting means adjusts the supply amount of the powder and granular material, the operation position of the adjustment operation tool is maximized from the minimum adjustment position. In the adjustment operation state in which the feeding amount of the granular material gradually increases with the change to the adjustment position and the operation position of the adjusting operation tool is the same, the feeding amount of the granular material is mutually equal. Multiple different control operations Configured freely switched is, certain switching of the adjustment operating condition of the feeding amount adjusting means that is provided with adjustment operating state switching means for instructing.

According to the first characteristic configuration, the feed amount adjusting means can be switched to a plurality of adjustment operation states. When switching is instructed by the adjustment operation state switching means, the adjustment operation state of the feed amount adjusting means is switched.
When the adjustment operation state of the feed amount adjusting means is switched to any one of the adjustment operation states, the feed amount of the granular material gradually increases as the operation position of the adjustment operation tool changes from the minimum adjustment position to the maximum adjustment position. It varies in form.

  In addition, when the adjustment operation state of the feeding amount adjusting means is switched to an adjustment operation state different from any of the adjustment operation states, the powder is adjusted as the operation position of the adjustment operation tool changes from the minimum adjustment position to the maximum adjustment position. It is the same as in the case of any of the above adjustment operation states, but the amount of powder supply when the operation position of the adjustment operation tool is the same is that the amount of particle supply changes in a gradually increasing form. This is different from the case of any of the adjustment operation states.

  And when using a granular material with a large amount of application required per unit area of the application target part, the granular material when the operation position of the adjustment operation tool in the plurality of adjustment operation states is the same. The adjustment operation state in which the feed amount is larger than the other adjustment operation states is used. In addition, when using a granular material that requires a small amount of spraying per unit area of the application target, the granular material when the operation position of the adjustment operation tool in the plurality of adjustment operation states is the same. The adjustment operation state in which the feed amount is smaller than the other adjustment operation states is used.

  In this way, by using an appropriate adjustment operation state according to the type of granular material, the degree of change in the amount of granular material delivered as the operation position of the adjustment operation tool changes from the minimum adjustment position to the maximum adjustment position Can be set to an appropriate degree of change in accordance with the corresponding type of granular material, and the feeding amount adjustment operation can be performed with high accuracy.

  Therefore, even when using a plurality of types of powders that differ greatly in the amount of spray required per unit area of the spray target location, it is possible to accurately adjust the feed amount. We have been able to provide equipment.

  The second characteristic configuration of the present invention is that, in addition to the first characteristic configuration, the adjustment operation state switching means is configured by a manually operated switching operation tool.

  According to the second characteristic configuration, when the user operates the manually operated switching operation tool, the adjustment operation state of the feeding amount adjusting means is set according to the type of the granular material among the plurality of adjustment operation states. You can switch to the appropriate one.

  In addition to the second feature configuration, the third feature configuration of the present invention is provided with notifying means for notifying which of the plurality of adjustment operation states the adjustment operation state of the feed amount adjustment means is provided. It is in.

  According to the third characteristic configuration, since the notification means notifies the adjustment operation state of the feed amount adjustment means which of the plurality of adjustment operation states, the user feeds out the notification contents of the notification means. The adjustment operation state of the amount adjusting means can be confirmed, and there is no disadvantage that the operation is performed while being switched to an inappropriate adjustment operation state, and the adjustment operation of the feeding amount can be performed accurately.

  According to a fourth feature configuration of the present invention, in addition to any one of the first feature configuration to the third feature configuration, the feeding amount adjusting means causes the operation position of the adjustment operation tool to be in a small operation region on the minimum adjustment position side. In some cases, the change in the amount of feeding of the granular material with respect to the change in the unit operation amount of the adjustment operation tool is smaller than that in the large operation region on the maximum adjustment position side. There exists in the point comprised so that the supply amount of a granular material may be adjusted based on operation.

  According to the fourth feature configuration, when the operation position of the adjustment operation tool is in the large-side operation region on the maximum adjustment position side, the change in the amount of the granular material fed with respect to the change in the unit operation amount of the adjustment operation tool (hereinafter, The unit change amount of the granular material may be large), but when the operation position of the adjustment tool is in the small operation area on the minimum adjustment position side, it is in the large operation area on the maximum adjustment position side. In comparison, the unit change amount of the granular material becomes small.

  For example, if the unit change amount of the granular material is the same in all the operation areas of the adjustment operation tool from the minimum adjustment position to the maximum adjustment position, in the large-side operation area, the powder with respect to the feed amount of the granular material at that time Even if the unit change amount of the granule is appropriate, the unit change amount of the granule is large when it is in the small side operation area, even though the amount of feed of the granule at that time is small. Therefore, it may be difficult to adjust to a desired feeding amount.

  On the other hand, according to the fourth characteristic configuration, in the small side operation region as well as in the large side operation region, the change in the amount of the granular material (the granular material is changed with respect to the unit operation amount of the adjustment operation tool). (Unit change amount) can be made appropriate so that the feeding amount can be easily adjusted, and the feeding amount can be adjusted more accurately.

  According to a fifth feature configuration of the present invention, in addition to any one of the first feature configuration to the fourth feature configuration, the feeding unit closes a supply path through which the granular material is supplied from the storage unit to the diffusion unit. A shutter member that is slidable between a closed state and an open state in which a passage opening is formed in the supply path, and an actuator that switches the shutter member between the closed state and the open state. The amount adjusting means switches between the closed state and the open state alternately, and changes the feed amount by changing the time ratio between the time for maintaining the closed state and the time for maintaining the open state. It is configured to control the operation of the actuator in an adjustable form.

According to the fifth characteristic configuration, the shutter member is alternately switched between the time for maintaining the closed state and the open state by the operation of the actuator, and the granular material is fed from the reservoir through the supply path and supplied to the diffusing means. And diffused. Then, the feeding amount adjusting means changes and adjusts the feeding amount of the granular material by changing the time ratio between the time for maintaining the closed state and the time for maintaining the open state.
By configuring in this way, for example, it is possible to easily change the feed amount of the granular material without troublesomeness such as manually adjusting the opening amount of the passage opening.

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 an electric circuit diagram of a medicine spreader. It is a figure which shows the relationship between an adjustment operation position and opening operation time. It is a figure which shows the relationship between the adjustment operation position of another embodiment, and opening operation time.

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 has two transmission cases 15 facing rearward on a support frame (not shown) that is connected to one feed case 14 and extends in the left-right direction of the machine body. Cantilevered. 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 and 5, the casing 29 has a left and right split structure in which the divided casing portions 29 a and 29 b on both the left and right sides are connected to each other at the mating surfaces.

  As shown in FIGS. 9 to 12, the feeding mechanism 25 includes a metal opening forming plate 32 in which a medicine passage opening 31 is formed, a closed state in which the passage opening 31 is closed, and a medicine passage opening 31. A metal shutter member 33 that is slidably movable over an open state in which the shutter member 33 is opened, and a solenoid 34 as an actuator that switches the shutter member 33 between a closed state and an open state.

The opening forming plate 32 and the shutter member 33 are provided in a state where they overlap each other. When the shutter member 33 closes the passage opening 31 formed in the opening forming plate 32, the opening forming plate 32 and the shutter member 33 are closed. When the member 33 slides to a position where the passage opening 31 is opened, the passage opening 31 is opened and opened, and in this opened state, the medicine is dropped and supplied through the passage opening 31. .
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.

  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 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.

  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.

  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. As shown in FIGS. 9, 10, and 12, the medicine that fits between the opening forming plate 32 and the shutter member 33 is placed at a position closer to the solenoid 34 side than the opening shielding position 33 </ b> A of the shutter member 33. A scraping hole 39 penetrating in the vertical direction is formed so as to be dropped.

As shown in FIG. 5, a solenoid housing chamber 40 for housing the solenoid 34 is formed at one side of the casing 29 in the casing 29, and an electric motor in the diffusion / emission mechanism 27 is formed at the opposite side. A motor storage chamber 42 for storing the motor 41 is formed.
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.

  As shown in FIGS. 10 and 11, a lower guide portion 47 for receiving and supporting the shutter member 33 is formed on both sides in the width direction on the lower side of the slit hole 43, and the shutter member 33 is switched to the open state. A wide discharge space 48 is formed so that the drug discharged from below the scraping hole 39 can be guided to the diffusion / release mechanism 27 (see FIG. 9).

  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 driving body 51 that is driven to rotate around a vertical rotation axis, and the receiving body 51. The diffusion blade body 52 is provided upright on the receiving surface 51A, and an electric motor 41 that rotationally drives the receiving body 51 around the vertical rotation axis Y is configured.

  The receiving body 51 has a disk shape provided such that the plate surface is in a horizontal orientation while rotating around the longitudinal axis, and the diffusion blade bodies 52 are dispersedly arranged along the circumferential direction. In the state and in the state where it approached to the radial direction outward side from the rotating shaft center Y in the receiving body 51, multiple are provided radially. 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, a guide passage 26 constituted by a cylindrical portion 30 integrally formed with the casing 29 is formed so as to guide the medicine to the bladeless region Q in the receiving body 51.
When the description is added, as described above, the surrounding area including the rotational axis Y in the receiving body 51 is formed as the bladeless area Q where the diffusion blade 52 does not exist over the entire circumferential direction. As shown, the outlet 54 at the lower end of the guide passage 26 is provided at a position corresponding to the bladeless region Q in plan view.

  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.

  The guide passage 26 is formed in a form that makes the opening area on the feeding mechanism 25 side larger than the opening area on the outlet 54 side. In other words, the guide passage 26 has a substantially quadrangular cross-sectional shape in plan view, and an inner surface 55 (on the radially outer side among the four inner surfaces forming the guide passage 26 ( 9), an inclined surface 56 is formed so that the width of the guide passage 26 in the direction along the radial direction gradually decreases toward the outlet 54 side. However, the inner surface 57 located on the radially inner side of the receiving body 51 is formed as a flat surface along the vertical direction.

  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 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.

  Then, the medicine spraying device 13 is based on the operation of the potentiometer-type spraying amount adjuster 68 as a manually-operated adjustment operating tool that can be operated within an operation range between the minimum adjustment position and the maximum adjustment position. A control device 66 is provided as a delivery amount adjusting means capable of changing and adjusting the delivery amount of the medicine by the delivery mechanism 25, and this control device 66 serves as an adjustment operation state when adjusting the delivery amount of the medicine. When the operation position of 68 is changed from the minimum adjustment position to the maximum adjustment position, the adjustment amount is changed in such a manner that the amount of medicine delivered gradually increases, and the operation position of the spray amount adjuster 68 is the same. The adjustment operation state switching means K is configured to be able to switch to a plurality of adjustment operation states with different amounts of medicines to be fed, and to command the control device 66 to switch the adjustment operation state. A pair of changeover switches 69 and 70 as an adjusting operation member is an example is provided.

Hereinafter, a specific control configuration for adjusting the feed amount will be described.
As shown in FIG. 13, the control device 66 is provided in the electric control unit 28. The traveling machine body 3 is not equipped with a rechargeable battery, and is generated by a generator 61 driven by the engine 4 (for example, a generator provided to light a headlamp or the like). Electric power 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 may be any type of work machine that is equipped with a rechargeable battery or a work machine that is not equipped with a rechargeable battery as described above. Even so, it is configured to operate properly.
That is, the electric control unit 28 rectifies the AC power from the generator 61 supplied via the power on / off switch 62 by the rectifier circuit 63 and then adjusts the voltage to 12 V DC by the first regulator circuit 64, and the DC The power of 12V is configured to be used as power for driving the electric motor 41 and the solenoid 34. Further, the output of the first regulator circuit 64 is adjusted to a DC voltage of 5V by the second regulator circuit 65 to adjust the output of the control device 66. The circuit is configured to be used as drive 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.

  Further, the forced discharge for forcibly opening the solenoid 34 by switching the DC 12V terminal output by the first regulator circuit 64 and the input terminal of the solenoid 34 to the state of bypassing the switching transistor 67 and connecting them. A switch 81 is provided. The forced discharge switch 81 is turned on by a pressing operation, and is returned and urged to return to an off state when the hand is released.

The DC 12V power is output by the drive circuit 71 that adjusts the power supplied to the electric motor 41 by the pulse signal PU output by the control device 66, the inverter circuit 72 that inverts the pulse signal PU, and the inverter circuit 72. And a detection circuit 73 for detecting a counter electromotive voltage (induced voltage) VX generated in the electric motor 41 when the pulse signal PU is turned off by the inversion signal, and the detection result of the detection circuit 73 is fed back to the control device 66. Then, the control device 66 outputs to the drive circuit 71 so that the electric power supplied to the electric motor 41 becomes a desired value, in other words, the receiving body 51 is rotated at a desired number of rotations. The driving state of the electric motor 41 is controlled by changing the duty ratio of the pulse signal.
Incidentally, the counter electromotive voltage is a voltage value that changes in proportion to the rotational speed of the electric motor 41 at that time, and it is a well-known configuration to feedback control the motor rotational speed based on such a counter electromotive voltage. .

  With this configuration, for example, even if the power supply voltage fluctuates due to fluctuations in the power generation state by the power generator 61, the electric motor 41 causes the receiving body 51 to be as desired as possible. It is comprised so that it can rotate with rotation speed.

  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. Each time it is detected that the feed operation of the vertical feed device 21 detected by the vertical feed detection sensor 82 has been performed a set number of times, the shutter member 33 is only for the time when the set time (open operation time described later) elapses. Is configured to control the operation of the solenoid 34 so as to switch to the open state and then return to the closed state. The electric motor 41 controls the drive state of the drive circuit 71 as described above, and rotationally drives the receiving body 51 at a desired rotational speed.

  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. Each time the traveling vehicle 3 travels a set distance while traveling, the medicine can be sprayed and supplied to a region (medicine supply target region) where four seedlings are already planted, and the unit area of the field The desired amount of drug can be supplied per hit.

  As shown in FIG. 7, the pair of changeover switches 69 and 70 are each constituted by a push operation type switch, and the control device 66 is commanded by the changeover switches 69 and 70 when pushed. When the adjustment operation state is set by pressing the changeover switches 69 and 70, the display lamps 74 and 75 (corresponding to the changeover switches 69 and 70) are set. The indicator) (an example of the notification means) is lit to notify the user of that fact.

  Further, as shown in FIG. 7, in addition to the pair of changeover switches 69 and 70 and the display lamps 74 and 75, the power on / off switch 62, the spraying amount adjuster 68, and the forced discharge switch 81 are respectively provided next to the storage case 76. It is configured to be arranged side by side.

Next, the adjustment operation state set by the changeover switches 69 and 70 will be described.
As shown in FIG. 14, when one of the changeover switches 69 is operated, the solenoid 34 is opened as the operation position (adjustment operation position) of the spray amount adjuster 68 changes from the minimum adjustment position to the maximum adjustment position. The setting operation time for switching to the state (corresponding to the delivery amount of the medicine) (hereinafter referred to as the opening operation time) is an adjustment operation state that changes in a gradually increasing form, and the operation position of the application amount adjuster 68 is A first adjustment operation state T1 is set in which the opening operation time is the same when they are the same.

  Further, when the other changeover switch 70 is operated, the adjustment operation state 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. In addition, a second adjustment operation state T2 is set in which the opening operation time when the operation position of the spreading amount adjuster 68 is the same is longer than the first adjustment operation state T1.

  By the way, when using a medicine that supplies a small amount per unit area of the field (for example, about 1 kg per 10 ares), the first adjustment operation state T1 is used, and a large amount per unit area of the field. When using the medicine which supplies (for example, about 3 kg per 10 ares), the second adjustment operation state T2 is used.

  As shown in FIG. 14, when the operating position of the spraying amount adjuster 68 is in the small side operation region W1 on the minimum adjustment position side, the spraying amount is compared to when it is in the large side operation region W2 on the maximum adjustment position side. In a form in which the change in the opening operation time with respect to the change in the unit operation amount of the adjuster 68 is reduced, the opening operation time is adjusted based on the operation of the spray amount adjuster 68, and in the small operation region W1. The change width of the opening operation time with respect to the change of the unit operation amount of the spray amount adjuster 68 does not become too long with respect to the opening operation time at that time, and becomes an appropriate change width so that the adjustment operation can be easily performed.

  In the example shown in FIG. 14, when a part of a narrow area on the minimum adjustment position side is set as the small operation area W1, and the other is set as the large operation area W2, The change in the opening operation time with respect to the change in the unit operation amount of the spray amount adjuster 68 is larger than that in the small operation region W1, but within the range of the large operation region W2, the spread amount controller 68 The change in the opening operation time with respect to the change in the unit operation amount is set to be substantially the same.

  Whenever the control device 66 detects that the feed operation of the vertical feed device 21 detected by the vertical feed detection sensor 82 has been performed a set number of times, the control operation state and the spraying amount based on the operation of the changeover switches 69 and 70 are detected. The operation of the solenoid 34 is controlled so that the shutter member 33 is switched to the open state and then returned to the closed state only while the open operation time set from the adjustment position information of the adjuster 68 elapses.

  As shown in FIGS. 3, 6, and 7, the electric control unit 28 is integrally formed by assembling the electric components as described above inside the storage case 76, and the storage case 76 is not shown in the casing 29. It is configured to be installed with screws. Moreover, as shown in FIG. 13, the electrical 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.

  Then, as shown in FIG. 7, a spray amount adjuster 68 and a pair of changeover switches 69 and 70 are arranged on the lateral side surface of the storage case 76 in the front-and-rear direction of the machine body, and arranged side by side. When the dispensing amount adjuster 68 is operated to adjust the feeding amount, the operation of switching the changeover switches 69 and 70 according to the type of medicine is appropriately performed.

  Therefore, the electrical control unit 28 can be easily detached from the casing 29 by removing the storage case 76 in a state where the connection of the connector 78 is released and the electrical wiring 77 is separated.

  Further, not only the electric control unit 28 but also 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 is formed in which the engaging hole 89B is fitted and engaged and received and supported, 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 a state where the support bracket 89 is received by the receiving portions 88B and 88C, the left and right buckle mechanisms 87 can be held and detached while being engaged with a locking portion 89D formed on the support bracket 89. It becomes the structure which supports.

  As a result, when the traveling machine body is washed with water after the work is completed, the entire medicine spraying device 13 can be removed by removing only the electric control unit 28 or removing the buckle mechanism 87.

  After the seedling planting operation is completed in the field, if the medicine remains in the storage hopper 24, the lid 85 made of a synthetic resin material provided in the storage hopper 24 is removed, and the discharge port 86 is opened. When the medicine remaining in the bottom of the storage hopper 24 or inside the medicine spraying device 13 that can be opened and discharged can be discharged but cannot be discharged from the discharge port 86, the forced discharge switch 81 is turned on. The medicine can be discharged by switching the solenoid 34 to the open state. At this time, although the receiving body 51 is rotating, the falling drug is collected by a collection bag (not shown) provided so as to cover the receiving body 51.

[Another embodiment]
(1) In the said embodiment, the adjustment operation state switching means K showed the structure corresponding to two types of granular materials with a pair of push operation type changeover switches 69 and 70 as a manual operation type switching operation tool. However, instead of such a configuration, the following (1-1) (1-2) (1-3) may be used.
(1-1) A toggle switch that can be switched to two positions, or a rotary switch that can be rotated to a plurality of positions may be used.
(1-2) 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.
(1-3) 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 so as to correspond to three or more types of granular material.

(2) In the above-described embodiment, the display lamps 74 and 75 are provided as the notification means. However, a configuration in which text information is displayed by image display information, a configuration in which notification is given by voice, or the like may be used. It is good also as a structure without a means.

(3) In the above embodiment, a part of the narrow area on the minimum adjustment position side is set as the small operation area W1, and the other area is set as the large operation area W2, and within the range of the large operation area W2. Shows that the change in the opening operation time with respect to the change in the unit operation amount of the spray amount adjuster 68 is set to be substantially the same, but instead of such a configuration, the following configuration may be used. Good.

As shown in FIG. 15, the opening operation time with respect to the change in the unit operation amount of the spray amount adjuster 68 as the operation position of the spray amount adjuster 68 sequentially changes from the minimum adjustment position to the maximum adjustment position. It may be configured such that the change in the value gradually increases.
In this configuration, regardless of the operation position of the spray amount adjuster 68 in the entire operation range from the minimum adjustment position to the maximum adjustment position, the operation area smaller than that position is in the operation area larger than that position. Compared to the case, the change in the opening operation time with respect to the change in the unit operation amount of the application amount adjuster 68 is small.

(4) In the above-described embodiment, the passage opening 31 is opened and closed by the opening forming plate 32 and the shutter member 33. However, instead of such a configuration, for example, an opening formation in which the passage opening 31 is formed. In addition to a shutter member 33 slidably movable by a plate 32 and a solenoid 34, a three-layer structure in which a plate spring type pressing member (not shown) that elastically pushes the shutter member 33 from below is superposed vertically. For example, various configurations can be used.

(5) In the above embodiment, the solenoid 34 is controlled so as 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 opening / closing operation of the solenoid 34 may be changed according to the traveling speed of the traveling machine body 3.

(6) In the above-described embodiment, the electric motor 41 is configured to rotationally drive the receiving body 51 at a predetermined rotational speed. However, the rotational speed of the electric motor 41 is set based on the operation of an adjustment operating means provided separately. It is good also as a structure controlled by the control apparatus 66 so that it may change.

(7) In the above embodiment, the electric motor 41 is provided in a state where the electric motor 41 is located above the receiving body 51, and the solenoid 34 is provided in a state where the solenoid 34 is located in a lateral position of the electric motor 41. The electric motor 41 and the solenoid 34 may be arranged with their positions shifted in the vertical direction.

(8) 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.

  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 26 Supply path 27 Diffusion means 31 Passing opening 33 Shutter member 34 Actuator 66 Feeding amount adjusting means 68 Adjustment operation tool 69, 70 Switching operation tool 74, 75 Notification means K Adjustment operation state switching means

Claims (5)

Within the operation range between the minimum adjustment position and the maximum adjustment position, the feeding means for feeding out the granular material stored in the storage section, the diffusion means for diffusing and releasing the granular material fed from the feeding means to the field A granular material spraying device provided with a feeding amount adjusting means capable of changing and adjusting a feeding amount of the granular material by the feeding means based on an operation of an adjustable manually operated adjustment operation tool,
As the adjustment operation state when the feed amount adjusting means adjusts the feed amount of the powder, the feed amount of the powder as the operation position of the adjustment operation tool changes from the minimum adjustment position to the maximum adjustment position. Is an adjustment operation state that changes in a gradually increasing form, and is configured to be switchable to a plurality of adjustment operation states in which the amount of feeding of the granular material is different when the operation position of the adjustment operation tool is the same,
A granular material spraying device provided with adjustment operation state switching means for commanding switching of the adjustment operation state of the feed amount adjustment means.   The granular material spraying device according to claim 1, wherein the adjustment operation state switching means is configured by a manually operated switching operation tool.   The granular material spraying apparatus of Claim 1 or 2 provided with the alerting | reporting means which alert | reports which adjustment operation state of the said feed amount adjustment means is in any of several adjustment operation states.   When the operation amount of the adjustment operation tool is in the small-side operation region on the minimum adjustment position side, the feeding amount adjusting means is compared with when the adjustment operation tool is in the large-side operation region on the maximum adjustment position side. The configuration according to claim 1, wherein the feed amount of the granular material is adjusted based on the operation of the adjustment operation tool in a form in which the change in the feed amount of the granular material with respect to the change in the unit operation amount becomes small. The granular material dispersion | spreading apparatus of any one of Claims. A shutter member slidably movable between a closed state in which a supply path through which powder is supplied from the reservoir to the diffusion means and an open state in which a passage opening is formed in the supply path; And an actuator for switching the shutter member between the closed state and the open state,
The feed amount adjusting means is configured to alternately switch between the closed state and the open state, and the feed amount is changed by changing the time ratio between the time for maintaining the closed state and the time for maintaining the open state. The granular material spreading | diffusion apparatus of any one of Claims 1-4 comprised so that the action | operation of the said actuator may be controlled with the form which can be changed and adjusted freely.

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