JP2011036211A - Fluid spraying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid spraying apparatus capable of suitably feeding a fluid by eliminating feed delay. <P>SOLUTION: The fluid spraying apparatus includes a spraying body 42 having a delivery portion, a guiding member 41, a driving mechanism 43 for reciprocating the spraying body 42, and a drive transmission portion for transmitting the reciprocating motion of the spraying body 42 and driving the delivery portion. When moving the spraying body 42 positioned on one stroke end to the other stroke end, the spraying body 42 is moved toward the other stroke end by a first prescribed distance D1, then moved toward one stroke end by a second prescribed distance D2, and finally moved to the other stroke end. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes a spraying device main body having a hopper for storing a fluid and a feeding portion for feeding and spraying the fluid of the hopper, and a guide member for guiding and supporting the spraying device main body so as to be reciprocally movable at a predetermined stroke. And a drive mechanism for reciprocating the spraying device main body within a range of the predetermined stroke.

  As this fluid dispersion | distribution apparatus, there exists what is provided in the seedling planting apparatus of a rice transplanter, for example, as disclosed by patent document 1. FIG. According to the configuration of Patent Document 1, for example, as shown in FIG. 24, the spraying device main body 42 provided above the seedling stage is reciprocated within a predetermined stroke range by driving the drive mechanism 43. At this time, the drive transmission unit 55 transmits the reciprocating operation of the spraying device main body 42 to the feeding unit 46 to drive the feeding unit 46. Thereby, the feeding part 46 feeds and spreads the fluid (medicine) in the hopper 48. When the spraying device main body 42 reaches the stroke end, the spraying of the fluid and the movement of the spraying device main body 42 are temporarily stopped. In this manner, the fluid is sprayed on the mat-like seedlings placed on the seedling placing stand.

JP 2006-296344 A

  When the spraying device body 42 reaches the stroke end, a series of operations for temporarily stopping the spraying of the fluid and the movement of the spraying device body 42 and then starting the spraying of the fluid and the movement of the spraying device body 42 again. Will be described with reference to FIG.

  As shown in FIG. 24 (a), the drive mechanism 43 is driven to move the spraying device main body 42 to one stroke end side (to the right of the paper surface in FIG. 24), and the feeding portion 46 feeds the fluid in the hopper 48. Scatter from 49. The fluid sprayed from the outlet 49 passes through the nozzle 50 and falls from the opening 50 a of the nozzle 50. As shown in FIG. 24B, when the spraying device main body 42 reaches one stroke end, the drive of the drive mechanism 43 is stopped. Thereby, the dispersion | distribution of a fluid and the movement of the spreading | diffusion apparatus main body 42 are stopped.

  As shown in FIG. 24C, when the driving mechanism 43 is driven to start moving the spraying device main body 42 to the other stroke end side (left side of the paper in FIG. 24), the feeding portion 46 moves the fluid in the hopper 48. Starts to be sprayed from the outlet 49. At this time, the fluid sprayed from the outlet 49 may be in the middle of passing through the nozzle 50, and the fluid may not fall from the opening 50 a of the nozzle 50. In such a state, as shown in FIG. 24 (d), after a little time has elapsed since the spraying device main body 42 started to move to the other stroke end side, the fluid sprayed from the outlet 49. May pass through the nozzle 50 and fall from the opening 50a of the nozzle 50.

  Accordingly, as shown in FIGS. 24C and 24D, the fluid may not fall from the opening 50 a of the nozzle 50 at the same time as the spraying device main body 42 moves. For this reason, the fluid non-spreading region d1 may occur in the vicinity of the starting position of the spraying device main body 42, so there is room for improvement in this respect.

  An object of the present invention is to provide a fluid spraying device that can appropriately supply a fluid without delaying the fluid supply.

  A first characteristic configuration of the fluid spraying device of the present invention is a spraying device main body having a hopper for storing the fluid and a feeding portion for feeding and spraying the fluid in the hopper, and the spraying device main body at a predetermined stroke. A guide member that guides and supports the reciprocating device, a drive mechanism that reciprocates the spraying device main body within the range of the predetermined stroke, and a reciprocating operation of the sprinkling device main body that is transmitted to the feeding unit to transmit the feeding unit. When the drive transmission unit for driving and the spraying device main body located at one stroke end move to the other stroke end, the spraying device main body moves from one stroke end to the other stroke end by a first predetermined distance. Next, the spraying device main body moves to one stroke end side by a second predetermined distance that is substantially the same as the first predetermined distance or shorter than the first predetermined distance, After the so spraying device body is moved to the other stroke end, it lies in and a control means for driving the drive mechanism.

  According to this configuration, when the spraying device main body reaches one stroke end, the driving of the drive mechanism is stopped. Thereby, the dispersion | distribution of a fluid and the movement of a dispersion | spreading apparatus main body are stopped. The spraying device main body is moved to the other stroke end side by a first predetermined distance by driving the drive mechanism. At this time, the feeding unit starts to be driven at the same time as the spraying device body starts to move from one stroke end. However, as described in [Problems to be solved by the invention], there is a difference (time lag) between the timing at which the feeding unit is driven and the timing at which the fluid actually falls from the feeding unit.

  Next, the spray device main body is moved to the one stroke end side by a second predetermined distance by driving the drive mechanism. At this time, there is a high possibility that the fluid falls from the feeding portion and starts to reach a supply target location such as a mat-like seedling. Thereafter, the spraying device main body is moved to the other stroke end by driving the drive mechanism.

  Thus, when starting to move the spraying device body from one stroke end, the spraying device body is moved from one stroke end to the other stroke end side by a first predetermined distance, and then the spraying device body is By moving the fluid to the supply target by moving it to the one stroke end side by the second predetermined distance, the spraying device body can be moved to the other stroke end, and the starting position of the spraying device body The fluid can be appropriately supplied, for example, by reducing the occurrence of an unsprayed region of the fluid in the vicinity.

  A second characteristic configuration of the present invention is that a discharge port for discharging a fluid is formed in the lower part of the hopper separately from the feeding portion, and a detachable or extendable discharge member is provided in the discharge port. is there.

  After the spraying operation of the fluid, the fluid is discharged from the discharge port formed in the lower part of the hopper, and the discharged fluid is received in the recovery container and recovered. At this time, if there is a frame in the vicinity of the discharge port, when trying to bring the collection container close to the discharge port, it may be difficult to bring the collection container close to the discharge port due to the frame hitting the collection container. It may be difficult to collect the fluid discharged from the outlet, such as the fluid discharged from the outlet easily spills from the recovery container. In addition, the collection container may be lifted in order to bring the collection container closer to the discharge port, and the burden of the operator's collection work increases, such as maintaining the state in which the worker lifts the collection container while collecting the fluid. Sometimes.

  Therefore, as in the present configuration, a detachable or extendable discharge member is provided at the discharge port. As a result, even when there is a frame or the like in the vicinity of the discharge port, the fluid is discharged from the discharge port by attaching or extending the discharge member and bringing the tip of the discharge member close to the recovery container so that the fluid is difficult to spill from the recovery container. The fluid can be recovered well. Further, since the tip of the discharge member can be brought close to the collection container, there is no need to lift the collection container, and the burden on the collection work of the operator can be reduced.

  According to a third characteristic configuration of the present invention, a measuring container for receiving a fluid from the feeding unit is configured to be detachable from a receiving part of the spraying device main body, and the measuring container is separated from the receiving part in the spraying device main body. It is in the point comprised so that attachment or detachment to the remote storage part or the said guide member is possible.

  By attaching a measuring container to the receiving part of the spraying device main body, reciprocating the spraying device main body, and collecting the fluid in the measuring container, the amount of the fluid actually fed out from the feeding unit can be measured. . After completion of the fluid weighing operation, the measuring container is attached to the storage part or guide member of the spraying device main body. As described above, the measurement container can be prevented from being lost by attaching the measurement container to the storage portion or the guide member of the spraying apparatus main body after completion of the fluid weighing operation.

It is a whole side view showing a riding type rice transplanter. It is a side view which shows a seedling planting apparatus and the chemical spraying apparatus for seedling mounting surfaces. It is a schematic plan view of a seedling planting apparatus. It is a rear view which shows the chemical spraying apparatus for seedling mounting surfaces. It is a side view which shows a seedling stand and a dispersion device main body. It is a rear view which shows the drive mechanism which reciprocates a spraying device main body. It is a vertical side view which shows the delivery part of a dispersion device main body. It is a vertical front view which shows the delivery part of a dispersion device main body. It is a vertical side view which shows a hopper and a measuring cup. It is a cross-sectional side view which shows the chemical | medical agent spraying apparatus for agricultural fields. It is a figure which shows distribution of the chemical | medical agent by the chemical | medical agent spraying apparatus for fields. It is sectional drawing which shows the motor arrangement | positioning part of a drive mechanism. It is a front view which shows a position detection means. It is a front view which shows a vertical feed detection means. It is a side view which shows a vertical feed detection means. It is a block diagram of a control part. It is a flowchart of spraying control. It is a flowchart of rightward distribution control. It is a flowchart of leftward distribution control. It is a figure which shows operation | movement of a dispersion device main body. It is a side view which shows the fluid distribution apparatus in another embodiment. It is a front view which shows the fluid distribution apparatus in another embodiment. It is a side view which shows the fluid distribution apparatus in another embodiment. It is a figure which shows the fluid distribution apparatus in patent document 1. FIG.

[First Embodiment]
Hereinafter, the case where the fluid distribution device according to the present invention is applied to a riding type rice transplanter will be described.

〔overall structure〕
FIG. 1 is an overall side view of a riding type rice transplanter equipped with a seedling surface drug spraying device 1 as a fluid spraying device according to an embodiment of the present invention. As shown in this figure, the riding type rice transplanter includes a self-propelled vehicle that is self-propelled by a pair of left and right steering operations and a drivable front wheel 2 and a pair of left and right drivable rear wheels 3, and the self-propelled vehicle. And a seedling planting device 6 connected to the rear portion of the vehicle body frame 4 via a link mechanism 5.

  The seedling planting device 6 is equipped with a seedling placement surface medicine spraying device 1 and an agricultural field medicine spraying device 91. This riding type rice transplanter performs a rice planting operation for planting rice seedlings supplied with a disinfectant as a fluid into a field while spraying a herbicidal agent on the field.

  That is, the self-propelled vehicle includes the pair of left and right front wheels 2 and the pair of left and right rear wheels 3, a driving unit equipped with an engine 7 provided at the front of the body frame 4, and the body frame 4 is provided with a driving unit 13 equipped with a driving seat 8 provided at the rear of the driving unit 8, and a reserve seedling storage device 9 provided on both lateral sides of the driving unit. This self-propelled vehicle includes a rotating shaft 11 extending from a front transmission case 10 to a feed case 20 of the seedling planting device 6, and the output of the engine 7 is transmitted to the seedling planting by the rotating shaft 11. This is transmitted to the attaching device 6.

[Seedling planting equipment]
As shown in FIG. 1, the seedling planting device 6 is configured such that the link mechanism 5 is operated to swing up and down with respect to the vehicle body frame 4 by a hydraulic cylinder 12, so that the seedling planting device 6 is placed below the seedling planting device 6. The three grounding floats 21 arranged side by side in the left-right direction of the attaching device 6 are moved up and down into a descending work state in which the grounding float 21 is grounded on the farm scene, and an ascending non-working state in which the grounding float 21 is elevated from the farm scene.

  As shown in FIGS. 1 to 5, when the seedling planting device 6 is lowered into the descending work state and the self-propelled vehicle is driven, the six seedlings arranged in the left-right direction of the seedling planting device 6 of the seedling mounting table 22. With respect to the mat-like seedling A placed on the placement portion 22a, the medicine is supplied from the seedling placement surface medicine spraying device 1, and arranged in the left-right direction of the seedling planting device 6 behind the seedling planting device 6. By the six seedling planting mechanisms 23 located at, the seedlings that have been supplied with chemicals are planted after leveling by the grounded float 21 in the field scene.

  The seedling planting device 6 will be described in detail. FIG. 2 is a side view of the seedling planting device 6. FIG. 3 is a schematic plan view of the seedling planting device 6. As shown in these drawings, three planting drive cases 25 connected side by side in the left-right direction of the seedling planting device 6 are connected to the main frame 16 made of steel pipe material along the left-right direction of the seedling planting device 6. Is provided.

(Seedling planting mechanism)
As shown in FIGS. 1 to 3, one seedling planting mechanism 23 is supported on the left and right sides of the rear end of each planting drive case 25 so as to be driven.

  Each seedling planting mechanism 23 includes a pair of seedling planting claws 23a. Each seedling planting mechanism 23 is driven by the driving force transmitted from the feed case 20 through the planting drive case 25, and the tip end side of each seedling planting claw 23 a is located on the lower end side of the seedling mount 22. It moves back and forth between the seedling outlet 26 and the field scene while drawing a turning trajectory, and is alternately placed on the corresponding seedling placement part 22a of the seedling placement stand 22 by a pair of seedling planting claws 23a. One seedling is cut and taken out from the lower end of the mat-like seedling A, and a seedling planting exercise is carried out so that the taken out seedling is planted in a field scene.

(Seedling stand)
As shown in FIGS. 2 and 3, the seedling mounting table 22 is configured such that each seedling planting mechanism 23 is provided by a lateral feed mechanism 27 provided with a seedling lateral feed shaft 27 a provided on the feed case 20 so as to be capable of driving and rotating. In conjunction with the seedling planting movement, the machine is reciprocated in the left-right direction along the transverse feed guide rail 28.

  That is, the seedling stage 22 is configured so that each seedling planting mechanism 23 sequentially takes out seedlings from the lower end portion of the mat-like seedling A of the seedling stage 22 toward the other end side from the lateral one end side. The mat-like seedling A of each seedling placement portion 22a is transferred in the left-right direction of the machine body with respect to the seedling outlet 26. As shown in FIG. 4, the seedling outlet 26 is formed by a notch hole provided in the lateral feed guide rail 28.

(Seedling vertical feed belt)
As shown in FIGS. 1 to 3, the seedling stage 22 includes a seedling vertical feed belt 30 provided one by one on each seedling placement part 22 a. The seedling stage lower end side of each seedling vertical feed belt 30 is wound around one belt drive shaft 31. The belt drive shaft 31 is rotationally driven by a seedling vertical feed mechanism 32 equipped with a seedling vertical feed shaft 32a provided to be able to be driven in the feed case 20 every time the seedling stage 22 reaches the left and right lateral transfer stroke ends. Each seedling longitudinal feed belt 30 is driven to rotate.

  That is, the seedling vertical feed belt 30 of each seedling placement unit 22a is driven by a set stroke in the seedling vertical feed direction every time the seedling placement base 22 reaches the left and right lateral transfer stroke ends, and the corresponding seedling placement unit 22a. The mat-like seedling A positioned in the vertical direction is fed to the seedling outlet 26 by a length corresponding to the seedling extraction amount in the vertical direction of the seedling by the seedling planting mechanism 23.

[Medium spraying device for seedling placement surface]
The seedling placement surface medicine spraying device 1 will be described in detail. FIG. 2 is a side view of the seedling placement surface medicine spraying device 1. FIG. 4 is a rear view of the seedling placement surface medicine spraying device 1. As shown in FIGS. 1, 2, and 4 to 8, the seedling placement surface medicine spraying device 1 is a guide rail as a guide member supported on the seedling placement base 22 via a pair of left and right supports 40. 41, a spraying device main body 42 supported by the guide rail 41, a drive mechanism 43 provided at one end of the guide rail 41, and a drive transmission provided between the spraying device main body 42 and the drive mechanism 43. And a roll drive sprocket 55 as a part.

(Spraying device body)
The spraying device main body 42 is connected to the upper part of the feeding case 47 and is connected to a hopper 48 capable of storing a sterilizing medicine, a feeding part 46 for feeding and spraying the hopper medicine, and a lower part of the feeding case 47. And a nozzle 50 made of a hose.

  As shown in FIGS. 7 and 8, the spraying device main body 42 is slidably supported on the guide rail 41 by an attachment portion 51 provided at the rear portion of the feeding case 47, and the feeding portion 46 and the hopper 48. And the nozzle 50 move along the guide rail 41 so as to move together in the left-right direction of the seedling stage 22.

  The spraying device main body 42 includes a resin roller 52 provided on the mounting portion 51 so as to roll on an upward guide surface of the upper side portion 41a of the guide rail 41, and a backward guide of the vertical side portion 41b of the guide rail 41. A resin slide member 53 provided on the mounting portion 51 so as to be in sliding contact with the surface, and a resin slide member 53 provided on the attachment portion 51 so as to be in sliding contact with the forward guide surface of the lower side portion 41c of the guide rail 41. Due to the above action, it moves with little friction with the guide rail 41.

  The feeding portion 46 includes the feeding case 47 and a feeding roll 54 that is rotatably provided inside the feeding case 47.

  As shown in FIGS. 5 and 7, the upper end side of the nozzle 50 is connected to a cylindrical outlet 49 provided continuously to the lower part of the extension case 47.

  The nozzle 50 is a region where the medicine flowing in from the feeding port 49 is located on the upper end side of the seedling platform from the lower end portion where the seedling planting mechanism 23 of the mat-like seedling A is located from the opening 50a at the lower end of the nozzle. In addition, it is dropped into a gap formed between the seedlings by holding the seedlings with the seedling presser 61 and supplied to the floor soil portion of the mat-like seedling A. The nozzle 50 is held in a predetermined nozzle shape by a sheet metal core material 62 extending into the nozzle from the delivery port 49.

(Roll drive sprocket)
As shown in FIGS. 5 to 8, the roll drive sprocket 55 is rotatably provided outside the feeding case 47.

  A gear 57 provided so as to be integrally rotatable at the end of the rotation support shaft 56 of the roll drive sprocket 55 and an internal gear 58 provided so as to be integrally rotatable at one end side of the feeding roll 54 are meshed with each other.

  Thus, when the roll drive sprocket 55 is rotated, the roll drive sprocket 55 drives the feeding roll 54 via the rotation support shaft 56. Then, the feed roll 54 is fed by the feed recess 54 a positioned in the circumferential direction of the feed roll 54 in the feed roll rotation direction with the granular medicine flowing down from the bottom hole 48 a of the hopper 48 to the upper side of the feed roll 54. It is conveyed below 54 and dropped. The medicine that has fallen from the feeding roll 54 flows into the nozzle 50 from the feeding outlet 49.

  As shown in FIG. 8, when the roll drive sprocket 55 is rotated, the feeding roll 54 is driven to rotate, and the medicine stored in the hopper 48 enters the feeding recess 54 a of the feeding roll 54 and is slid by the brush 63. Then, the nozzle 50 is fed from the hopper 48 to the nozzle 50, and the nozzle 50 performs a spraying operation so as to be dropped and supplied to the floor soil portion of the mat-like seedling A of the seedling mount 22.

  The feeding portion 46 includes an adjustment dial 59 that is supported by the feeding case 47 so as to be rotatable. An end portion 59a of the adjustment dial 59 is screwed into a screw shaft portion 60a of a support shaft 60 that rotatably supports the feeding roll 54, and is engaged with one of a pair of components 54b of the feeding roll 54. Yes. Thus, by rotating the adjustment dial 59, the component 54b is moved along the support shaft 60 together with the adjustment dial 59, and the capacity of each of the feeding recesses 54a is adjusted to increase and decrease by the feeding roll 54. Increase or decrease the amount.

(Drive mechanism)
FIG. 6 is a rear view of the drive mechanism 43. FIG. 12 is a cross-sectional view of the drive mechanism 43. As shown in these drawings, the drive mechanism 43 includes an electric motor M1, a drive sprocket 66 provided to be rotatable integrally with an output shaft 65 of the electric motor M1, and the drive sprocket 66 and the guide rail 41. And an endless chain 68 wound around the drive sprocket 66 and the idle sprocket 67. The idler sprocket 67 is provided at the end opposite to the side where the electric motor M1 is located. It is.

  As shown in FIGS. 6 and 7, the endless chain 68 is connected to a pair of transfer arms 69 provided in the feeding case 47. Thereby, the endless chain 68 and the spraying device main body 42 are configured to be movable together.

  The drive mechanism 43 drives the endless chain 68 via the drive sprocket 66 by the electric motor M1, and moves the spraying device main body 42 along the guide rail 41 in the left-right direction along the guide rail 41 by the endless chain 68. . When the electric motor M1 is driven in the forward rotation direction, the drive mechanism 43 operates to transfer the spraying device main body 42 from one to the other in the left-right direction of the seedling stage 22, and the electric motor M1 is driven in the reverse rotation direction. Thus, the spraying device main body 42 is transferred from one to the other in the left-right direction of the seedling stage 22.

  The endless chain 68 moves the spraying device main body 42 at the same time, and simultaneously transmits the reciprocating operation of the spraying device main body 42 to the feeding portion 46 to drive the feeding roll 54 of the feeding portion 46 to spray the spraying device main body 42. It is comprised so that it may do.

  The case where the spraying device main body 42 is moved from one to the other will be described as an example. As shown in FIGS. 7 and 8, the transfer arm 69 is connected to the upper part of the endless chain 68, and the roll drive sprocket 55 is engaged to the lower part of the endless chain 68. Thus, when the electric motor M1 is driven in the forward rotation direction, the upper portion of the endless chain 68 moves from the other to the one, and the spraying device main body 42 is transferred from the other to the one. The lower part of the endless chain 68 moves from one side to the other, the roll driving sprocket 55 is rotated, the feeding roll 54 of the feeding unit 46 is driven, and the spraying device main body 42 is sprayed.

[Farm chemical spraying device]
As shown in FIGS. 10 and 11, the field medicine spraying device 91 includes a hopper 92 that stores a herbicidal medicine, a supply mechanism 93 that supplies the stored medicine by a predetermined amount, and a medicine supplied and supplied. A diffusion mechanism 94 that diffuses and spreads the planting trace with a lateral width that corresponds to the planting width, and a supply case 93 and a spreading case 95 that houses the diffusion mechanism 94 are provided.

  As shown in FIG. 1, the spraying case 95 of the field medicine spraying device 91 is connected and supported via a field medicine spraying device support part 96 supported by the planting drive case 25 of the seedling planting device 5. . The hopper 92 is formed with a single flow-down cylinder 92a that opens downward at a central rear portion. The entire hopper 92 is detachably fitted to the upper end of a cylindrical portion 95a connected to the upper central portion of the spreading case 95, and left and right buckles (not shown) provided in the cylindrical portion 95a. It is fastened.

  An inner case portion 95b that opens upward is provided inside the cylindrical portion 95a of the spray case 95, and the supply mechanism 93 is provided inside the inner case portion 95b.

(Supply mechanism)
The supply mechanism 93 is composed of an eye plate 97, an eye plate drive mechanism 98, and the like. The supply mechanism 93 feeds and supplies a predetermined amount of drug from the drug flow opening a formed at the lower end of the flow-down cylinder 92a by the eye plate 97, and a diffusion mechanism. 94 is supplied.

  The eye plate 97 is formed of a thick resin material having a fan shape in a plan view, and this eye plate 97 is supported by the hopper 92 so as to be swingable around the vertical axis X. A pair of feeding holes b penetrating vertically is formed near both ends of the outer periphery of the eye plate 97, and each feeding hole b is formed by reciprocatingly swinging the eye plate 97 around the vertical axis. It moves between a drug receiving position facing the drug flow outlet a and a position away from the drug flow outlet a. The eye plate 97 is driven to swing back and forth by an eye plate drive mechanism 98 having an electric motor M2 (stepping motor).

  A pair of left and right funnel-shaped flow guide portions 95c are formed at the rear portion of the bottom surface of the inner case portion 95b, and a shielding plate 102 made of a spring plate material is fixed to the entrance portion with a horizontal cantilever. Has been.

  The shielding plate 102 is elastically pressed against the lower surface of the eye plate 97, whereby the upper surface of the eye plate 97 is brought into close contact with the lower end of the flow-down cylinder 92 a, and the shielding plate 102 is brought into close contact with the lower surface of the eye plate 97. It comes to move. In a state where the delivery hole b is located at the medicine receiving position facing the medicine flow lower port a, a state where the lower part of the delivery hole b is blocked by the shielding plate 102 and the delivery hole b is located away from the drug flow lower port a. Then, it is comprised so that the downward direction of the delivery hole b may be open | released.

  In the state where the delivery hole b is located at the medicine receiving position facing the medicine flow-down port a, the medicine flow-down port a communicates with the delivery hole b, and in the state where the delivery hole b is located away from the drug flow-down port a. The flow-down port a is blocked by the eye plate 97.

  Further, a brush 99 acting on the upper surface of the eye plate 97 is provided on the left and right of the lower end portion of the flow-down cylinder 92a, and the medicine supplied and filled in the feeding hole b is rubbed with the brush 99 so as to feed out a fixed amount. It is configured.

  Accordingly, the eye plate 97 is reciprocally driven by the eye plate drive mechanism 98 to change the position of the delivery hole b to a position facing the medicine flow-down port a and a position away from the drug flow-down port a, so that the delivery hole b flows down. When in the position facing the mouth a, the delivery hole b is closed by the shielding plate 102 from below, so that the medicine in the hopper 92 flows into the delivery hole b from the medicine flow-down opening a, and the delivery hole b is in the medicine flow-down opening a. When it moves to the position where it deviates from, the delivery hole b is removed from the shielding plate 102 and opened downward, so that the medicine in the delivery hole b drops and is discharged to the flow-down guide portion 95c.

(Diffusion mechanism)
The diffusion mechanism 94 includes a diffusion blade 100, an electric motor M3, and the like, and is configured to diffuse the drug fed out by the supply mechanism 93. That is, a diffusion chamber 101 opened downward and rearward is formed inside the spray case 95, and the diffusion chamber 101 and the flow guide portion 95c are communicated with each other. The medicine that has been fed out and discharged to the flow-down guide portion 95c is dropped and supplied to the diffusion chamber 101, and the medicine dropped and supplied to the diffusion chamber 101 is diffused by the diffusion blade 100 that is rotationally driven by the electric motor M3. To spray.

(Control part)
As shown in FIG. 16, the control unit 45 includes a vertical feed detection unit 44, a left end detection unit 70, a right end detection unit 72, a position detection unit 75, a spraying timing detection unit 88, an inter-stock detection unit 111, Based on the detection information of the first operating means 113, the second operating means 115, the detecting means 44, 70, 72, 75, 88, 111 and the operating means 113, 115, the electric motor M1 and the electric motor M2. And a control means 79 for performing drive control and display control of the first display means 117 and the second display means 119.

(Vertical feed detection means)
As shown in FIGS. 14 and 15, the vertical feed detection means 44 includes a pair of vertical feed detection switches 44 a and a switch operating body 80.

  The pair of vertical feed detection switches 44a are supported side by side in a lateral direction of the seedling platform by a bracket 81 provided at the lateral end of the seedling platform 22. The switch operating body 80 is supported at the end of the belt drive shaft 31 so as to be integrally rotatable. As the seedling stage 22 reaches the left and right lateral feed stroke ends, the seedling longitudinal feed belt 30 is driven. The belt drive shaft 31 is rotationally driven.

  Then, one of the pair of operation parts 80a provided by shifting the position of the switch operating body 80 in the direction of the rotation axis presses one switching part of the pair of vertical feed detection switches 44a, and this vertical feed detection switch. 44a is turned on, or the other of the pair of operation portions 80a is pressed against the other switching portion of the pair of longitudinal feed detection switches 44a, and the longitudinal feed detection switch 44a is turned on.

  That is, when the seedling stage 22 reaches the left lateral feed slot and the seedling vertical feed belt 30 is driven, one vertical feed detection switch 44a is turned on, and the seedling stage 22 is turned to the right side. When the seedling longitudinal feed belt 30 is driven after reaching the feed stroke end, the other longitudinal feed detection switch 44a is turned on.

  As a result, the vertical feed detection means 44 detects that the seedling vertical feed has been performed on the seedling stage 22 by switching on one of the pair of vertical feed detection switches 44a, and controls the detection result. It outputs to the means 79.

(Left end detection means)
As shown in FIG. 12, the left end detection means 70 detects that the spraying device main body 42 is located at the left stroke end, and includes a left end detection switch 71 and is supported by an endless chain 68. The detection target piece 74a is provided.

The left end detection switch 71 is fixed to a motor support 82 provided on the guide rail 41 so as to support the electric motor M1. When the spraying device main body 42 is positioned at the left stroke end, the detection target piece 74a contacts the switching portion of the left end detection switch 71, and the left end detection switch 71 is turned on.
Thereby, the left end detection means 70 detects that the nozzle 50 is located at the left stroke end when the left end detection switch 71 is turned on, and outputs the detection result to the control means 79.

(Right end detection means)
As shown in FIG. 12, the right end detection means 72 detects that the spraying device main body 42 is located at the right stroke end, and includes a right end detection switch 73 and is supported by an endless chain 68. The detection target piece 74b is provided.

The right end detection switch 73 is fixed to the motor support 82. When the spraying device main body 42 is positioned at the right stroke end, the detection target piece 74b comes into contact with the switching portion of the right end detection switch 73, and the right end detection switch 73 is turned on.
Thereby, the right end detection means 72 detects that the nozzle 50 is located at the right stroke end when the right end detection switch 73 is turned on, and outputs the detection result to the control means 79.

(Position detection means)
As shown in FIGS. 12 and 13, the position detecting means 75 includes a first proximity sensor 76 and a rotating body 77 in which protrusions 77 a are arranged in the rotation direction at the peripheral edge.

  The rotating body 77 is supported by the drive sprocket 66 so as to be integrally rotatable. The first proximity sensor 76 is fixed to the motor support 82 so as to face the peripheral edge of the rotating body 77. As the drive sprocket 66 is driven to rotate the endless chain 68, the rotating body 77 rotates together with the driving sprocket 66, and the first proximity sensor 76 projects from the rotating body 77 as the rotating body 77 rotates. A pulse signal is generated by intermittently detecting the portion 77a.

  Thereby, the position detecting means 75 detects the rotation speed of the drive sprocket 66 by the first proximity sensor 76 and the rotating body 77 and outputs the detection result to the control means 79. At this time, the calculation means 87 moves the nozzle 50 from the left stroke end to the right stroke end based on the detected rotation speed, the detection result of the left end detection means 70, and the detection result of the right end detection means 73. The position when the nozzle 50 is moved and the position when the nozzle 50 is transferred from the right stroke end toward the left stroke end are calculated.

(Inter-strain detection means and spray timing detection means)
As shown in FIGS. 1 and 16, the ratio between the traveling speed of the riding rice transplanter and the planting speed (between plants) of the seedling planting apparatus 6 is adjusted between the engine 7 and the seedling planting apparatus 6. An inter-stock transmission 86 is interposed. The inter-shaft transmission 86 is provided with an inter-stock switching lever 85 that switches between stocks between predetermined stocks. The inter-strain detection unit 111 includes an inter-strain detection sensor 112 that detects the position (inter-strain) of the inter-strain switching lever 85. Thereby, the inter-strain detection unit 111 detects the position of the inter-strain switching lever 85 and outputs the detection result to the control unit 79.

  As shown in FIGS. 3 and 16, the spraying timing detection means 88 includes a second proximity sensor 89, four spoke portions 83 extending radially from the seedling vertical feed shaft 32 a, and respective ends of each spoke portion 83. And a detected part 84 attached to the part. As the seedling vertical feed shaft 32a is driven, the detected portion 84 rotates. The second proximity sensor 89 intermittently detects the detected portion 84 and generates a pulse signal. Specifically, the second proximity sensor 89 generates four pulse signals per rotation of the seedling vertical feed shaft 32a. In addition, since the rotation speed (number of pulses) of the seedling vertical feed shaft 32a is synchronized with the transmission power (between stocks) of the inter-strain transmission 86, it is possible to determine the inter-strain from the rotation speed of the seedling vertical feed shaft 32a. Thereby, the spraying timing detection means 88 detects the rotational speed of the seedling vertical feed shaft 32 a and outputs the detection result to the control means 79.

  At this time, the control means 79 detects two pulse signals, that is, half rotation of the seedling vertical feed shaft 32a, because the seedling vertical feed shaft 32a rotates at a relatively high speed when the distance between the strains is 16 cm, for example. The eye plate driving mechanism 98 is driven to swing the eye plate 97 back and forth. By the reciprocating rocking of the eye plate 97, one medicine filled in the feeding hole b falls on the flow guide part 95c, and the medicine dropped by the rotational driving of the diffusion blade 100 is sprayed on the field.

  Further, when the distance between the plants is 28 cm, for example, the control means 79 detects one pulse signal, that is, one quarter rotation of the seedling vertical feed shaft 32a, because the seedling vertical feed shaft 32a rotates at a relatively low speed. The dish driving mechanism 98 is driven to reciprocate the eye plate 97. By the reciprocating rocking of the eye plate 97, one medicine filled in the feeding hole b falls on the flow guide part 95c, and the medicine dropped by the rotational driving of the diffusion blade 100 is sprayed on the field.

In the conventional configuration, two spoke portions 83 are provided. For this reason, when the distance between the plants is 16 cm, for example, the medicine is sprayed when one rotation of the seedling vertical feed shaft 32a is detected. Was configured to be. At this time, since the spraying interval is wide, there is a risk that striped shading may occur in the spraying. On the other hand, in this configuration, when the distance between the stocks is 16 cm, for example, the half-rotation of the seedling vertical feed shaft 32a is detected, and the medicine is sprayed. When one rotation is detected, the medicine is sprayed. Thereby, regardless of the size between the strains, the amount of the medicine for one time can be reduced, the spraying interval can be narrowed, and the medicine can be sprayed uniformly.
The spraying interval is a distance traveled by the riding rice transplanter between the time when the medicine is sprayed and the time when the medicine is sprayed next, and is an interval between regions where the medicine is not sprayed.

(Each operation means and each display means)
As shown in FIG. 16, the first operating means 113 includes a push button type first operation switch 114. The second operating means 115 includes a push button type second operation switch 116. The first display means 117 includes a first display lamp 118. The second display means 119 includes a second display lamp 120. The first operation switch 114, the second operation switch 116, the first display lamp 118, and the second display lamp 120 are provided on the operation panel 13 a of the operation unit 13.

  When the operator presses and operates the first operation switch 114 in a state where the driving of the seedling placement surface medicine spraying device 1 is stopped, the control means 79 starts driving the seedling placement surface medicine spraying device 1 and performs the first display. The lamp 118 is turned on to display the operating state of the seedling placement surface medicine spraying device 1. When the operator pushes the first operation switch 114 while the seedling placement surface medicine spraying device 1 is driven, the control means 79 stops driving the seedling placement surface medicine spraying device 1 and the first display lamp 118. Is turned off, and the inoperative state of the seedling placement surface medicine spraying device 1 is displayed.

  When the operator presses and operates the second operation switch 116 in a state where the driving of the field medicine spraying device 91 is stopped, the control means 79 starts driving the field medicine spraying device 91 and lights the second display lamp 120. Then, the operating state of the agricultural chemical spraying device 91 is displayed. When the operator pushes and operates the second operation switch 116 while the agricultural field medicine spraying device 91 is driven, the control means 79 stops driving the agricultural field medicine spraying device 91 and turns off the second display lamp 120. The non-operating state of the agricultural chemical spraying device 91 is displayed.

  If these operation switches 114 and 116 are provided on the side of the medicine spraying device 1, 91, each time the medicine spraying device 1, 91 is started or stopped, the medicine spraying device 1, 91 is The operation switches 114 and 116 must be pushed and operated by turning to the rear side of the provided riding type rice transplanter. In addition, since the operating state of the medicine spraying devices 1 and 91 is difficult to understand from the operation unit, the driving of the medicine spraying devices 1 and 91 may be forgotten to be stopped.

  According to this configuration, the first operation switch 114, the second operation switch 116, the first display lamp 118, and the second display lamp 120 are provided on the operation panel 13 a of the operation unit 13. It is possible to start or stop driving these drug spraying apparatuses 1 and 91 without moving from 13. In addition, since the operator can confirm the operating state / non-operating state of the medicine spraying devices 1 and 91 by displaying the display lamps 118 and 120, it is possible to prevent the operator from forgetting to stop driving the medicine spraying devices 1 and 91. it can.

[Control of spraying chemicals on the seedling surface]
The control means 79 is configured using a microcomputer. FIG. 17 is a flowchart of spraying control. FIG. 18 is a flowchart of the rightward spraying control. FIG. 19 is a flowchart of leftward spraying control.

  As shown in FIG. 17, the control means 79 determines whether or not the seedling vertical feed has been performed based on the detection information by the vertical feed detection means 44, and when determining that the seedling vertical feed has been performed, the left end detection means 70. Is in the detection state or whether the right end detection means 72 is in the detection state. When it is determined that the seedling vertical feed has been performed and the left end detection unit 70 is in the detection state, the control unit 79 performs the rightward spraying control. When it is determined that the seedling vertical feed has been performed and the right end detection unit 72 is in the detection state, the control unit 79 performs leftward spraying control.

(Rightward spray control)
As shown in FIGS. 4 and 18, when the spraying device main body 42 located at the left stroke end moves to the right stroke end, the control means 79 moves the spraying device main body 42 from the left stroke end to the right stroke. The first predetermined distance D1 is moved to the end side, the spraying device main body 42 is then moved to the left stroke end side by the second predetermined distance D2, and then the spraying device main body 42 is moved to the right stroke end. Further, the drive mechanism 43 is configured to be driven.

  Specifically, when the control unit 79 sets the start position RS (left stroke end), the first return position P1, the second return position P2, and the stop position ST (right stroke end), the control unit 79 turns the electric motor M1 on. Drive in the forward rotation direction.

  Based on the calculation result of the calculation means 87, the control means 79 determines whether or not the nozzle 50 has reached the first return position P1 that is separated from the left stroke end by the first predetermined distance D1 from the right stroke end. The electric motor M1 is driven in the forward rotation direction until it is determined that the nozzle 50 has reached the first folding position P1.

  When the control means 79 determines that the nozzle 50 has reached the first folding position P1, it drives the electric motor M1 in the reverse rotation direction. Based on the calculation result of the calculation means 87, the control means 79 determines whether or not the nozzle 50 has reached the second return position P2 that is separated from the first return position P1 by the second predetermined distance D2 to the left stroke end side. The electric motor M2 is driven in the reverse rotation direction until it is determined that the nozzle 50 has reached the second folding position P2.

  When the control means 79 determines that the nozzle 50 has reached the second folding position P2, it drives the electric motor M1 in the forward rotation direction. The control means 79 determines whether or not the nozzle 50 has reached the stop position ST based on the detection information of the right end detection means 72, and drives the electric motor M1 in the forward rotation direction until it is determined that the nozzle 50 has reached the stop position ST. .

  When the control unit 79 determines that the nozzle 50 has reached the stop position ST based on the detection information of the right end detection unit 72, the control unit 79 stops the electric motor M so that the nozzle 50 stops at the stop position ST.

(Left-facing spray control)
As shown in FIGS. 4 and 19, when the spraying device main body 42 located at the right stroke end moves to the left stroke end, the control means 79 causes the spraying device main body 42 to move from the right stroke end to the left stroke. The first predetermined distance D1 is moved to the end side, the spraying device main body 42 is then moved to the left stroke end side by the second predetermined distance D2, and then the spraying device main body 42 is moved to the left stroke end. Further, the drive mechanism 43 is configured to be driven.

  Specifically, when the control unit 79 sets the start position LS (right stroke end), the first return position P1, the second return position P2, and the stop position ST (left stroke end), the control means 79 sets the electric motor M1. Drive in reverse direction.

  Based on the calculation result of the calculation means 87, the control means 79 determines whether or not the nozzle 50 has reached the first return position P1 that is separated from the right stroke end by the first predetermined distance D1 from the left stroke end. The electric motor M1 is driven in the reverse rotation direction until it is determined that the nozzle 50 has reached the first folding position P1.

  When the control means 79 determines that the nozzle 50 has reached the first folding position P1, it drives the electric motor M1 in the forward rotation direction. Based on the calculation result of the calculation means 87, the control means 79 determines whether or not the nozzle 50 has reached the second return position P2 that is separated from the first return position P1 by the second predetermined distance D2 to the right stroke end side. The electric motor M2 is driven in the forward rotation direction until it is determined that the nozzle 50 has reached the second folding position P2.

  When the control means 79 determines that the nozzle 50 has reached the second folding position P2, it drives the electric motor M1 in the reverse rotation direction. The control means 79 determines whether or not the nozzle 50 has reached the stop position ST based on the detection information of the left end detection means 70, and drives the electric motor M1 in the reverse rotation direction until it is determined that the nozzle 50 has reached the stop position ST. .

  When the control means 79 determines that the nozzle 50 has reached the stop position ST based on the detection information of the left end detection means 70, the control means 79 stops the electric motor M so that the nozzle 50 stops at the stop position ST.

(Operation of the sprayer body)
When the spraying device main body 42 reaches the stroke end on one side, the spraying of the medicine and the movement of the spraying device main body 42 are temporarily stopped, and then a series of starting the spraying of the medicine and the movement of the spraying device main body 42 again. The operation will be described.

  As shown in FIG. 20 (a), the endless chain 68 is rotationally driven to one side via the drive sprocket 66 by the drive of the electric motor M1, thereby rotationally driving the roll drive sprocket 55 engaged with the endless chain 68. As the roll drive sprocket 55 rotates, the feeding roll 54 is driven to rotate, and the medicine filled in the feeding recess 54 a of the feeding roll 54 is sprayed from the feeding outlet 49. The medicine sprayed from the delivery port 49 passes through the nozzle 50 and falls from the opening 50 a of the nozzle 50. Further, by rotating the endless chain 68 to one side, the spraying device main body 42 that moves integrally with the endless chain 68 moves to one side. In this way, the spraying device main body 42 moves to one side while spraying the medicine.

  As shown in FIG. 20 (b), when the spraying device main body 42 reaches one stroke end, the electric motor M1 stops, whereby the endless chain 68 stops, and the roll drive sprocket 55 and the spraying device main body 42 are stopped. Stops.

  As shown in FIG. 20C, the spraying device main body 42 moves from one stroke end to the other side by a first predetermined distance D1 by driving the electric motor M1. At this time, the medicine sprayed from the delivery port 49 is in the middle of passing through the nozzle 50, and the medicine has not dropped from the opening 50 a of the nozzle 50.

  As shown in FIG. 20D, the spraying device main body 42 moves to one side by a second predetermined distance D2 by driving the electric motor M1. At this time, the medicine sprayed from the delivery port 49 passes through the nozzle 50, falls from the opening 50a of the nozzle 50, and begins to reach a supply target location such as a mat-like seedling. Thereafter, the spraying device main body 42 is moved to the other stroke end by driving the electric motor M1.

  Thus, the spraying device main body 42 is moved from the one stroke end to the other side by the first predetermined distance D1, and then the spraying device main body 42 is moved to the one side by the second predetermined distance D2, and then Since the spraying device main body 42 is moved to the other stroke end, the spraying device main unit 42 is temporarily returned to one side and the timing at which the medicine is actually dropped and supplied to the supply target portion is matched. It is possible to reduce the occurrence of the unsprayed region d1 of the medicine in the vicinity of the starting position of the main body 42.

(Measuring of drugs)
As shown in FIG. 9, a cup holder 48b as a storage portion for hooking the measuring cup 39 as a measuring container is formed on the inner side of the lid portion 48a of the hopper 48. In the opening 50a of the nozzle 50, a cup holder 50b is formed as a receiving portion for hooking the measuring cup 39 as a measuring container.

  It is necessary to check whether or not an appropriate amount of drug is sprayed before the actual drug spraying operation. For this reason, the measurement work of the sprayed medicine is performed. As shown in FIG. 9, the measuring cup 39 is accommodated in the hopper 48 in a state of being mounted on the cup holder 48 b of the lid portion 48 a of the hopper 48.

  When starting the measuring operation of the medicine, the measuring cup 39 is removed from the cup holder 48b of the lid portion 48a of the hopper 48, and the measuring cup 39 is attached to the cup holder 50b of the opening 50a of the nozzle 50. The spraying device main body 42 is reciprocated to measure the medicine in the measuring cup 39.

  After the drug weighing operation is completed, the lid 48a of the hopper 48 is opened to return the drug in the measuring cup 39 to the hopper 48, and the measuring cup 39 is attached to the cup holder 48b of the lid 48a of the hopper 48.

  As described above, the measuring cup 39 can be prevented from being lost by attaching the measuring cup 39 to the cup holder 48b of the lid portion 48a of the hopper 48 after the medicine measuring operation is completed.

  As shown in FIG. 7, a discharge port 48c for discharging the medicine is formed in the lower part of the hopper 48, separately from the feeding portion 46, and a bellows-like telescopic hose 38 as a discharge member is connected to the discharge port 48c. Has been. And the cap 37 which covers the discharge port 48c in the state which shortened the expansion-contraction hose 38 is provided.

  During the spraying operation of the medicine, the cap 37 is placed on the discharge port 48c with the telescopic hose 38 shortened.

  After the spraying operation of the medicine, the cap 37 is removed from the discharge port 48c, the telescopic hose 38 is extended, and its tip is inserted into a collection container (not shown) to prevent the medicine from spilling out of the collection container. Can do.

  Further, since the telescopic hose 38 is extended and its tip is brought close to the collection container, there is no need to lift the collection container in order to bring the collection container close to the discharge port 48c, thereby reducing the burden on the collection work of the operator. it can.

  In addition, various containers, such as a cup, can be used for the collection containers for collecting the chemicals. Further, a bag may be used instead of the container.

[Second Embodiment]
In the riding type rice transplanter of the first embodiment, the seedling placing surface chemical spraying device 1 is supported by the seedling placing stand 22. However, in the riding type rice transplanter of the second embodiment, in addition to the seedling placement surface medicine spraying device 1 being supported by the seedling placing table 22, the medicine spraying device 130 is also supported by the reserve seedling storage device 129. ing. Moreover, although the riding type rice transplanter of 2nd Embodiment is the structure substantially the same as 1st Embodiment, the structure of the reserve seedling storage apparatus 129 differs. Therefore, only the configuration of the reserve seedling storage device 129 and the configuration of the medicine spraying device 130 supported by the reserve seedling storage device 129 will be described.

  As shown in FIG. 21, each of the left and right spare seedling storage devices 129 is configured so that a plurality of seedlings can be placed and housed together with a seedling box, and has an arch-shaped column 131 erected from the vehicle body frame 4. The seedling receiver 133 is provided on the outer side of the body of the support 131 and arranged in three upper and lower stages.

  The preliminary seedling storage device 129 includes a first form in which all the seedling receivers 133 are arranged in three upper and lower stages (state of a two-dot chain line in FIG. 21), and the seedling receivers 133 are arranged in series in the front-rear direction and extend forward and backward. It is configured to be switchable to the second form (the state indicated by the solid line in FIG. 21). The seedling receiver 133 is composed of an upper seedling receiving part 133a, an intermediate seedling receiving part 133b, and a lower seedling receiving part 133c.

  As shown in FIGS. 21 and 22, the medicine spraying device 130 supported by the preliminary seedling storage device 129 is connected to an upper portion of a feeding case 47 of the feeding portion 46 and can store a sterilizing medicine. And a feeding portion 46 for feeding and spraying the medicine of the hopper.

  The feeding portion 46 includes a feeding case 47 and a feeding roll 54 that is rotatably provided inside the feeding case 47. A disk member 134 is attached to the feeding roll 54 so as to be integrally rotatable.

  In performing the planting work, the operator switches the seedling receiver 133 to the second form, supplies the seedlings stored in the seedling box 135 from the front of the upper seedling receiver 133a, and sequentially rearward To move.

  At this time, since the disk member 134 is in contact with the seedling box 135, the disk member 134 is rotated as the seedling box 135 is conveyed. The feeding roll 54 is driven by the rotation operation of the disk member 134. The medicine dropped from the feeding roll 54 by driving the feeding roll 54 is sprayed to the seedling box 135 from the feeding outlet 49.

  The operator sequentially takes out the seedlings that have reached the rear seedling receiving body 133c and supplies them to the seedling setting table 22 at the rear of the machine body. When the seedling table 22 is fully loaded with seedlings, the seedling receiving body 133 is returned to the first form.

  Since the spraying amount of the drug sprayed on the mat-like seedling A is determined, the spraying amount of the drug of the seedling surface drug spraying device 1 is equal to the spraying amount of the drug spraying device 130 supported by the reserve seedling storage device 129. The hopper 48 can be reduced in size.

[Another embodiment]
(1) In each of the above embodiments, the configuration in which the seedling placement surface medicine spraying device 1 is provided in the riding type rice transplanter is illustrated. However, as shown in FIG. May be provided. Specifically, the walking type rice transplanter includes a float 141 at the lower part of a self-propelled vehicle that self-propels by a pair of left and right wheels 140, and a seedling planting device 6 and a handle 142 at the rear of the self-propelled vehicle. It is configured. A reserve seedling storage device 9 is provided above the self-propelled vehicle. One seedling is cut out from the lower end portion of the mat-like seedling placed on the seedling placing stand 22 by the seedling planting claws 23a of the seedling planting device 6, and the taken out seedling is planted in the field. The seedling planting device 6 is equipped with a seedling placement surface medicine spraying device 1, and the seedling placement surface medicine spraying device 1 sprays the medicine on the mat-like seedlings while reciprocating left and right.

(2) In each of the above embodiments, the second predetermined distance D2 is configured to be the same as the first predetermined distance D1. However, the second predetermined distance D2 may be configured to be shorter than the first predetermined distance D1.

(3) In each of the above embodiments, the configuration in which the bellows-like telescopic hose 38 is connected to the discharge port 48c is illustrated, but the present invention is not limited to this, and the flexible hose 38 is attached to and detached from the discharge port 48c. It may be configured to be connected. During the spraying operation of the medicine, the hose 38 is removed, and the medicine is recovered by attaching the hose 38 when starting the recovery operation of the medicine.

(4) In each of the above embodiments, the configuration in which the storage portion that hooks the measuring cup 39 is the cup holder 48b is illustrated, but the storage portion that hooks the measuring cup 39 may be the guide rail 41.

(5) In each of the above embodiments, the first display unit 117 includes the first display lamp 118 and the second display unit 119 includes the second display lamp 120. However, the present invention is not limited to this. Alternatively, a liquid crystal display may be used. Moreover, it may replace with the 1st display means 117 and the 2nd display means 119, and the structure provided with the alerting | reporting means which alert | reports the operation state of the chemical | drug | medicine spraying apparatus 1 for seedling mounting surfaces or the chemical | medical agent spraying apparatus 91 for fields by voice may be sufficient. .

(6) In each of the above embodiments, the sprinkling timing detection means 88 includes the four spoke portions 83 extending radially from the seedling vertical feed shaft 32a and the detected portion 84 attached to each end portion of each spoke portion 83. Although the structure provided is illustrated, the number of the spoke parts 83 and the detected parts 84 is not limited to four. However, if the number of the spoke parts 83 and the detected parts 84 is two, the density of the spray of the medicine is generated. Therefore, the number of the spoke parts 83 and the detected parts 84 is preferably three or more.

  The present invention can be applied to a fluid spraying device having a configuration for supplying fertilizer to the mat-like seedlings A and a fluid spraying device having a configuration for supplying fertilizer and seeds directly to the field.

DESCRIPTION OF SYMBOLS 1,130 Fluid distribution apparatus 38 Discharge member 39 Measuring container 41 Guide member 42 Dispersion apparatus main body 43 Drive mechanism 46 Feeding part 48 Hopper 48b Storage part 48c Discharge port 50b Receiving part 55 Drive transmission part 79 Control means D1 First predetermined distance D2 Second predetermined distance

Claims (3)

A spraying device main body having a hopper for storing the fluid and a feeding unit for feeding and spreading the fluid of the hopper;
A guide member for guiding and supporting the spraying device main body so as to be reciprocally movable at a predetermined stroke;
A drive mechanism for reciprocating the spraying device main body within a range of the predetermined stroke;
A drive transmission unit that transmits the reciprocating operation of the spraying device body to the feeding unit to drive the feeding unit;
When the spraying device main body located at one stroke end moves to the other stroke end, the spraying device main body moves from one stroke end to the other stroke end by a first predetermined distance, The spraying device main body moves to the one stroke end side by a second predetermined distance that is substantially the same as the first predetermined distance or shorter than the first predetermined distance, and then the spraying device main body moves to the other stroke end, A fluid spraying device comprising: control means for driving the drive mechanism.   The fluid spraying device according to claim 1, wherein a discharge port for discharging a fluid is formed in a lower portion of the hopper separately from the feeding portion, and a removable or extendable discharge member is provided in the discharge port.   A weighing container for receiving the fluid from the feeding section is configured to be detachable from a receiving portion of the spraying device main body, and the weighing container is disposed on a storage portion or the guide member separated from the receiving portion in the spraying device main body. The fluid spraying device according to claim 1, wherein the fluid spraying device is configured to be detachable.

Images