JP2011072223A - Granule spraying apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily recover a test chemical that is fed from a feed part and discharged, to have no recovery loss and to perform a precise measurement when a feed amount of granule is measured in a granule spraying apparatus equipped with the feed part for feeding granule and a diffusion blade for diffusing discharged granule below an outlet for discharging granule fed from the feed part. <P>SOLUTION: The granule spraying apparatus includes a mode change means 110 for switching between a spray mode for rotating the diffusion blade to spray the granule while driving the feed part and feeding the granule and a measurement mode for collecting the granule discharged downward from the outlet by stopping the diffusion blade and driving the feed part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  [Technical Field] The present invention relates to a powder particle disperser provided with a feeding unit for feeding powder particles and a diffusion blade for diffusing the discharged granular material below a discharge port for discharging the powder particles fed by the feeding unit. .

For example, as disclosed in Patent Document 1, a powder (medicine) is fed from a feeding unit by a fixed amount, and the powder discharged from the discharge port is diffused by a diffusion blade. However, it is known to disperse powder particles in the field.
For a drug or the like as an example of a granular material, 1a (1 are), or a standard application amount per unit area is recommended. In the case of the above-mentioned Patent Document 1, in order to check the spraying amount, the powder spraying device is covered with a large plastic bag, and the spraying operation is actually performed for a certain period of time, and the weight of the medicine collected in the plastic bag is measured. Then, the amount of spraying per unit time in the state at the time of measurement was measured, and the actual amount of spraying per unit area was measured from this.

Japanese Patent Laying-Open No. 2005-204571 (see FIGS. 12, 13, and 14)

  In the method of collecting powder particles in a large plastic bag covering the powder particle dispersion device as described above, when this is done in the field, the scattered powder particles are difficult to collect and difficult to accurately measure. there were.

  An object of the present invention is to provide a granular material spraying device that makes it easy to recover the granular material that has been discharged from the supply unit and that can be accurately measured without recovery loss.

[Configuration of the first invention]
The first aspect of the present invention is a granular material provided with a feeding section for feeding out the granular material, and a diffusion blade for diffusing the discharged granular material under the discharge port for discharging the granular material fed out by the feeding section. In the spraying device,
A sprinkling mode in which the diffusion blades are rotated while the feeding unit is driven to feed the powder particles and the powder particles are sprinkled, and the diffusion blade is stopped and the feeding unit is driven to move downward from the discharge port. And a mode switching means for switching to a measuring mode for collecting the granular material released into the container.

[Operation of the first invention]
According to the first aspect of the invention, when measuring the granular material fed out from the feeding portion, the mode switching means is configured to stop the diffusion blade from the spraying mode in which both the feeding portion and the diffusion blade are driven and rotated to spray the granular material. By switching to the metering mode for driving the feeding section, the powder particles discharged from the discharge port can be easily collected in a small container or the like.

[Effect of the first invention]
Therefore, according to the first invention, there is no need for the trouble of recovering the powder particles diffused by the rotating blades by covering the powder particle distribution device with a large plastic bag as in the prior art, and the recovery loss is also conventional. As a result, it has become possible to perform accurate weighing.

[Configuration of the second invention]
According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, a support portion capable of supporting a collection container that catches the powder particles discharged downward from the discharge port is provided below the discharge port.

[Operation and effect of the second invention]
According to the second aspect of the present invention, it is possible to easily collect the granular material that has been fed out by simply supporting the container such as a bucket on the support portion provided below the discharge port, and the collection work can be easily performed. There are advantages.

It is a whole side view showing a riding type rice transplanter. It is a side view showing a seedling planting device, a seedling placement surface medicine spraying device, and a field medicine spraying device. It is a rear view which shows the seedling mounting stand and the chemical spraying apparatus for seedling mounting surfaces. It is a partial vertical side view which shows a seedling mounting stand and the chemical spraying apparatus for seedling mounting surfaces. It is a partially broken rear view which shows the principal part of the chemical spraying apparatus for seedling mounting surfaces. It is a vertical side view of the feeding part of the seedling surface medicine spraying device. It is a vertical front view which shows the delivery part of the chemical spraying apparatus for seedling mounting surfaces. It is a partially vertical side view in the motor arrangement | positioning part of the transfer mechanism of the chemical | medical agent spraying apparatus for seedling mounting surfaces. (A) (b) is a partially longitudinal rear view which shows the delay means of the chemical spraying apparatus for seedling mounting surfaces. It is a perspective view which shows the delay means of the chemical spraying apparatus for seedling mounting surfaces. It is a control block diagram. (A) (b) (c) (d) is a rear view which shows the principal part of each state of the chemical | medical agent spraying apparatus for seedling mounting surfaces. It is a partially longitudinal side view which shows the drive structure of the chemical | medical agent spraying apparatus for agricultural fields. It is a partially longitudinal rear view which shows the principal part of the chemical | medical agent spraying apparatus for agricultural fields. It is a rear view which shows the chemical | medical agent spraying apparatus for agricultural fields. It is a partially vertical rear view which shows the delay means of the chemical spraying apparatus for seedling mounting surfaces of another embodiment. It is a transfer speed distribution map which shows the drive speed of the chemical spraying apparatus for seedling mounting surfaces of another embodiment. It is a rear view which shows the chemical spraying apparatus for seedling mounting surfaces of another embodiment. It is a rear view which shows the chemical spraying apparatus for seedling mounting surfaces of another embodiment. It is a schematic side view which shows the rear part of the riding type rice transplanter of another embodiment.

  As shown in FIG. 1, a six-row planting type seedling planting device is provided via a fertilizer A and a link mechanism 3 at the rear of a traveling machine body 28 supported by right and left front wheels 1 and right and left rear wheels 2. 5 is supported so as to be able to move up and down, and a hydraulic cylinder 4 that drives the link mechanism 3 to move up and down is provided, and a seedling placement surface medicine spraying device B and a field field medicine spraying device C (powder and granular material) A riding type rice transplanter, which is an example of a paddy field work machine, is configured to be connected to and supported by an example of a spreading device.

[Seedling planting equipment]
Next, the seedling planting device 5 will be described.
As shown in FIGS. 1 and 2, the seedling planting device 5 includes a feed case 17, a transmission case 6, and a pair of rotation cases 7 a and a rotation case 7 a that are rotatably supported at the rear part of the transmission case 6. A seedling planting mechanism 7 having a pair of planting arms 7b provided at both ends, a center center float 9 and left and right side floats 11, a seedling mounting table 10 having a seedling mounting surface and driven to reciprocate laterally in the horizontal direction, A vertical feed mechanism 25 provided on each of the seedling mounting surfaces of the seedling mounting table 10 is provided. A feed case 17 and a transmission case 6 are fixed to a support frame 18 arranged in the left-right direction, and the seedling planting device 5 (feed case 17) is arranged around a front and rear axis (not shown) at the rear lower part of the link mechanism 3. It is supported so that it can roll freely.

  As shown in FIG. 2, the guide rail 20 is supported by the transmission case 6 in the left-right direction, and the lower portion of the seedling support 10 is supported along the guide rail 20 so as to be movable laterally. A support member 26 is fixed to the right and left ends of the support frame 18 and extends upward, and a support member 50 is fixed over the upper portion of the support member 26. The guide rail 27 is fixed, and the guide rail 27 is supported by a roller 51 supported by the support member 50 so as to be laterally movable.

[Seedling stand]
As shown in FIGS. 2 to 4, the seedling stage 10 includes a seedling placement part 10 a on which six mat-like seedlings D can be placed side by side in the horizontal direction of the machine body. Is provided with a vertical feed mechanism 25 that is provided one by one at the bottom of each seedling placement portion 10a and that transfers the mat-like seedlings on the seedling placement surface downward toward the seedling extraction port 21.

  The seedling vertical feed mechanism 25 is wound around the belt drive shaft 23 that is intermittently driven to rotate, the belt idler shaft 29 provided alongside the belt drive shaft 23, and the belt drive shaft 23 and the belt idler shaft 29. And a seedling longitudinal feed belt 30 provided one by one on each placement portion 10a. Each time the seedling platform 10 reaches the left and right lateral transfer stroke ends, the belt drive shaft 23 is rotationally driven by a set stroke, and each seedling vertical feed belt 30 is longitudinally fed by a length corresponding to the seedling removal amount.

[Fertilizer]
The fertilizer application device A will be described. As shown in FIGS. 1 and 2, a hopper 12 for storing fertilizer and a feeding portion 13 corresponding to the planting strip are provided on the rear side of the driver seat 24, and a blower 14 is provided on the lower side of the driver seat 24. It has been. The center float 9 and the side float 11 are provided with a groover 15, and a hose 16 is connected across the feeding portion 13 and the groover 15.

[Medium spraying device for seedling placement surface]
As shown in FIGS. 3 to 7, the seedling placement surface medicine spraying device B includes a spraying device main body 37 having a spraying mechanism 36 for spraying the medicine, and a pair of left and right support posts 38 erected on the seedling mounting base 10. The guide rail 39 that guides and supports the spraying device body 37 in the left-right direction of the machine body, the transfer mechanism 44 that reciprocates the spraying device body 37 in the left-right direction of the machine body, and the spraying device body 37 moves while spraying the medicine. Then, when reaching the stroke end, the controller 40 that drives the spraying mechanism 36 and the transfer mechanism 44 so as to temporarily stop the spraying of the medicine and the movement of the spraying device main body 37, and the state stopped at the stroke end A delay means TS for moving the spraying device main body 37 with a predetermined time delay from the start of the spraying of the chemical when starting the spraying of the drug and the movement of the spraying device main body 37 There.

[Spraying device body]
As shown in FIG. 6, the spraying device main body 37 includes a spraying mechanism 36, a tank 46 having a bottom connected to the upper part of the feeding case 45 of the spraying mechanism 36, and a cylinder connected to the lower part of the feeding case 45. And a nozzle 49 formed of a hose having an upper end connected to the shape delivery port 47.
The spraying device main body 37 is slidably guided and supported on the guide rail 39 by an attachment portion 60 provided at the rear portion of the feeding case 45. The mounting portion 60 includes a resin roller 63 that rolls on the upward guide surface of the upper side portion 39a of the guide rail 39, a resin slide member 64 that is in sliding contact with the rearward guide surface of the vertical side portion 39b of the guide rail 39, and a guide. A resin-made slide member 64 that is in sliding contact with the forward guide surface of the lower side portion 39c of the rail 39 is provided. By the action of the rollers 63 and the slide member 64, the spraying device main body 37 moves in the left-right direction along the guide rail 39 in a state where the friction with the guide rail 39 is small.

[Spraying mechanism]
As shown in FIGS. 6 and 7, the spraying mechanism 36 is provided in a feed case 45, rotatably provided inside the feed case 45, and rotated to the outside of the feed case 45. And a roll drive sprocket 80 that is provided so as to drive a feeding roll 79 (an example of a feeding portion).
A gear 83 provided so as to be integrally rotatable at the end of the rotation support shaft 82 of the roll drive sprocket 80 and an internal gear 85 provided so as to be integrally rotatable at one end side of the feeding roll 79 are meshed with each other. The feeding roll 79 is provided with a feeding recess 79a that can accommodate a medicine side by side on the outer peripheral surface thereof. As a result, when the roll drive sprocket 80 is rotated, the roll drive sprocket 80 drives the feeding roll 79 via the rotation support shaft 82. Then, the feeding roll 79 conveys and drops the granular chemical that has flowed down from the bottom hole 46a of the tank 46 to the upper side of the feeding roll 79 by the feeding recess 79a. The medicine that has fallen from the feed roll 79 flows into the nozzle 49 from the feed port 47.

  The spraying mechanism 36 further includes an adjustment dial 103 supported on the feeding case 45 so as to be rotatable. An end 103a of the adjustment dial 103 is screwed into a threaded shaft 88a of a support shaft 88 fixed to the feeding case 45 so as to rotatably support the feeding roll 79, and one of the pair of the feeding rolls 79. Is engaged with the structure 79b. As a result, the adjustment dial 103 is rotated and moved along the support shaft 88 to move and move the component 79b, thereby adjusting the capacity of each feeding recess 79a to increase or decrease the feeding amount by the feeding roll 79. Increase or decrease the value.

〔nozzle〕
As shown in FIGS. 4 and 5, the nozzle 49 is held in a predetermined nozzle shape by a sheet metal core member 90 extending into the nozzle 49 from the feeding port 47. The medicine flowing in from the feeding port 47 is dropped from the opening 49 a at the lower end of the nozzle 49 to the supply target location of the mat-like seedling D. Specifically, the supply target portion is a seedling by the upper end side of the seedling stage 10 from the lower end portion where the seedling planting mechanism 7 of the mat-like seedling D is taken out and by the seedling pressing by the seedling presser 96. It is the position of the gap formed between the leaves.

  With the above configuration, when the roll drive sprocket 80 is driven to rotate, the feeding roll 79 rotates, and the amount stored in the feeding recess 79a of the feeding roll 79 is defined as a single feeding amount. The nozzle 49 is used to drop the material into the floor soil portion of the mat-like seedling D of the seedling table 10 and supply it.

[Transfer mechanism]
As shown in FIGS. 4 and 5, the transfer mechanism 44 is provided at one end portion of the guide rail 39 and at one end portion of the guide rail 39, and is connected to the output shaft 105 of the electric motor M. A drive sprocket 106 that is interlocked and connected, an idle sprocket 107 that can be idled at the other end of the guide rail 39, and an endless chain 108 wound around the drive sprocket 106 and the idle sprocket 107 are provided.
By driving the electric motor M, the endless chain 108 is rotationally driven via the drive sprocket 106, whereby the roll drive sprocket 80 that engages the endless chain 108 is rotationally driven, and the medicine is sprayed from the delivery port 47 by the delivery roll 79. To do. The medicine sprayed from the feeding port 47 passes through the nozzle 49 and falls from the opening 49 a of the nozzle 49. Further, the spraying device main body 37 is moved along the guide rail 39 by rotationally driving the endless chain 108. Thus, the transfer mechanism 44 drives and operates the spraying device main body 37 so as to spray the spraying device main body 37 simultaneously with the transfer operation.

[Delay means]
As shown in FIGS. 4 to 6, 9, and 10, the delay means TS includes a protruding pin 121 provided on the endless chain 108 and a pair of abutting members provided on the mounting portion 60 of the spraying device body 37. 109.

  The pair of abutting members 109 are provided at an interval in the left-right direction across the protruding pin 121. The abutting member 109 has a rectangular plate-like abutting portion 109b having a notch 109a that is recessed at the top and fixed to the mounting portion 60 at one side, and a pair of the abutting portion 109b from the center portion thereof. A triangular plate-like chain support portion 109c protruding inward of the contact member 109 and a rectangular plate-like bent portion 109d formed on the other side portion of the contact portion 109b are provided.

  As shown in FIG. 9, when the endless chain 108 is rotationally driven to one side through the notch 109 a, the protruding pin 121 provided on the endless chain 108 is brought into contact with the abutting portion 109 b of the one abutting member 109. In contact with the left and right side portions of the notch 109a, the spraying device main body 37 is moved to one side (see FIG. 9A). When the endless chain 108 is rotationally driven to the other side through the notch 109a, the protruding pins 121 provided on the endless chain 108 are moved to the left and right sides of the notch 109a in the abutting portion 109b of the other abutting member 109. The spraying device main body 37 is moved to the other side in contact with the place (see FIG. 9B). As described above, when the projecting pin 121 moves between the projecting pin 121 and the pair of contact members 109 by the distance d between the pair of contact members 109, the engagement with one of the pair of contact members 109 is performed. There is flexibility.

  As shown in FIGS. 5 and 9, the endless chain 108 is wound around a drive sprocket 106 and an idle sprocket 107. Since the width of the endless chain 108 in the left-right direction is substantially the same as that of the guide rail 39, the upper endless chain 108 may be suspended by its own weight and interfere with the roll drive sprocket 80. Therefore, a chain support portion 109c that supports the upper endless chain 108 is provided to prevent the upper endless chain 108 from interfering with the roll drive sprocket 80. The base end side portion 109e of the upper side (chain side) surface of the chain support portion 109c rises upward toward the inward side. This further prevents the upper endless chain 108 from interfering with the roll drive sprocket 80. Further, the tip side portion 109f of the upper side (chain side) surface of the chain support portion 109c is lowered downward toward the inward side. This prevents the tip of the chain support 109c from hitting the upper endless chain 108.

  The contact portion 109b is slightly inclined from the vertical direction so that the distance between the pair of contact members 109 becomes narrower toward the bottom. The endless chain 108 between the pair of abutting members 109 is supported by the chain support portion 109c and is convex upward. Therefore, the abutting portion 109b is slightly inclined so that the protruding pin 121 abuts the abutting portion 109b in the vertical direction to prevent the endless chain 108 from moving up and down during the abutting. ing.

  Hereinafter, the structure of the control part 40 of the chemical spraying apparatus B for seedling placement surfaces and the structure of each detection means are demonstrated.

(Configuration of control unit)
As shown in FIG. 11, the control unit 40 is a control unit that performs various controls based on detection information of the left end detection unit 112, the right end detection unit 114, the position detection unit 117, and the detection units 112, 114, and 117. 40. The control unit 40 is linked to the proximity sensor 118 of the position detection unit 117, the left end detection switch 113 of the left end detection unit 112, and the right end detection switch 115 of the right end detection unit 114, and is linked to the drive unit of the electric motor M.

[Configuration of left end detection means]
As shown in FIG. 8, the left end detection unit 112 includes a left end detection switch 113 and a detection target piece 116 a supported by an endless chain 108. The left end detection switch 113 is fixed to a motor support 122 provided on the guide rail 39 so as to support the electric motor M. When the nozzle 49 is positioned at the left stroke end, the detection target piece 116a comes into contact with the switching portion of the left end detection switch 113, and the left end detection switch 113 is turned on.

  Accordingly, the left end detection unit 112 detects that the nozzle 49 is located at the left stroke end when the left end detection switch 113 is turned on, and outputs the detection result to the control unit 40.

(Configuration of right end detection means)
As shown in FIG. 8, the right end detection means 114 includes a detection end piece 116b supported by the endless chain 108 in addition to the right end detection switch 115. The right end detection switch 115 is fixed to the motor support 122. When the nozzle 49 is positioned at the right stroke end, the detection target piece 116b comes into contact with the switching portion of the right end detection switch 115, and the right end detection switch 115 is turned on.

  As a result, the right end detection means 114 detects that the nozzle 49 is positioned at the right stroke end when the right end detection switch 115 is turned on, and outputs the detection result to the control unit 40.

[Configuration of position detection means]
As shown in FIG. 8, the position detection means 117 includes a proximity sensor 118 and a rotating body 119 in which protrusions and cutouts are alternately formed in the rotation direction on the peripheral edge.

  The rotating body 119 is supported by the drive sprocket 106 so as to be integrally rotatable. The proximity sensor 118 is fixed to the motor support 122 so as to face the peripheral edge of the rotating body 119. As the driving sprocket 106 is driven to rotate the endless chain 108, the rotating body 119 rotates together with the driving sprocket 106, and the proximity sensor 118 causes the protrusion 119a of the rotating body 119 to rotate along with the rotation of the rotating body 119. Is detected intermittently to generate a pulse signal.

  Thereby, the position detection means 117 detects the rotational speed of the drive sprocket 106 by the proximity sensor 118 and the rotating body 119, and outputs the detected rotational speed to the control unit 40. Based on the detection result by the left end detection means 112 and the detection result by the right end detection means 115, the position when the nozzle 49 is transferred from the left stroke end to the right stroke end, and the nozzle 49 is the right stroke. And the position when it is transferred from the end toward the left stroke end.

[Control of spraying drugs]
The control unit 40 is configured using a microcomputer. As shown in FIG. 11, the control unit 40 operates the electric motor M based on information detected by the detection units 117, 112, and 114.

  That is, when the control unit 40 determines that the seedling vertical feed has been performed based on the detection information by the vertical feed detection unit (not shown), the left end detection unit 112 is in the detection state or the right end detection unit 114 is in the detection state. Determine whether. When the control unit 40 determines that the seedling vertical feed has been performed and determines that the left end detection unit 112 is in the detection state, the control unit 40 disposes the spraying device body 37 while spraying the medicine until the right end detection unit 114 is in the detection state. Rightward spraying control for driving the electric motor M is performed so as to move it to the right. When the control unit 40 determines that the seedling vertical feed is performed and the right end detection unit 114 is in the detection state, the spraying device main body 37 is moved to the left while spraying the medicine until the left end detection unit 112 is in the detection state. The leftward spraying control for driving the electric motor M is performed.

[Drug spraying operation]
When the spraying device main body 37 reaches the stroke end, a series of operations for starting the spraying of the chemical and the movement of the spraying device main body 37 again after temporarily stopping the spraying of the chemical and the movement of the spraying device main body 37 will be described. To do.

  As shown in FIG. 12A, by driving the electric motor M, the endless chain 108 is rotationally driven to one side via the drive sprocket 106, whereby the roll drive sprocket 80 engaged with the endless chain 108 is rotationally driven. Then, the medicine is sprayed from the delivery port 47 by the delivery roll 79. The medicine sprayed from the feeding port 47 passes through the nozzle 49 and falls from the opening 49 a of the nozzle 49. Further, since the projecting pin 121 provided on the endless chain 108 is in contact with one of the contact members 109, the spraying device main body 37 is rotated on one side by rotating the endless chain 108 to one side (FIG. 12 ( Move to the right of page a). As shown in FIG. 12 (b), when the spraying device main body 37 reaches the stroke end, the endless chain 108 is temporarily stopped by the electric motor M being temporarily stopped by the detection of the right end detecting means 114. Then, the roll drive sprocket 80 and the feeding roll 79 are temporarily stopped. Further, the spraying device main body 37 temporarily stops. At this time, the protruding pin 121 maintains a state of contacting the one contact member 109.

  As shown in FIG. 12 (c), by driving the electric motor M to rotate the endless chain 108 to the other side via the drive sprocket 106, the roll drive sprocket 80 engaged with the endless chain 108 is driven to rotate. Then, the medicine is sprayed from the delivery port 47 by the delivery roll 79. At this time, the protruding pin 121 is in the middle of moving away from the one abutting member 109 toward the other abutting member 109, and the movement of the spraying device main body 37 is still stopped. When a predetermined time has elapsed since the start of the spraying of the medicine, the medicine sprayed from the feeding port 47 passes through the nozzle 49 and falls from the opening 49 a of the nozzle 49. At this time, the projecting pin 121 provided on the endless chain 108 comes into contact with the other contact member 109, whereby the spraying device main body 37 starts to move to the other side (see FIG. 12D).

  Thus, the movement time for the protruding pin 121 to move from one contact member 109 to the other contact member 109, and the medicine sprayed from the feeding port 47 passes through the nozzle 49 and falls from the opening 49a of the nozzle 49. By combining with the time to perform, it is possible to eliminate the delay in supplying the medicine and to prevent the unspread area of the powder particles from being generated near the starting position of the spraying apparatus main body 37.

  Each line clutch (not shown) that interrupts transmission of the power of the feed case 17 to the seedling planting mechanism 7 is switched to a disconnected state, the belt drive shaft 23 is stopped, and the seedling planting mechanism 7 and the seedling vertical feed belt 30 are stopped. Is stopped, the partial spraying that drives the electric motor M based on the position detecting means 117 so as to reciprocate the spraying device main body 37 only in the part corresponding to the remaining seedling placement part 10a in the seedling placing base 10. Control may be performed. However, since the engagement flexibility is provided between the protruding pin 121 and the pair of contact members 109, for example, as shown in FIG. 3, the seedling planting mechanism 7 corresponding to the left two seedling placement portions 10a is provided. When the seedling vertical feed belt 30 is stopped, even if the electric motor M is driven and the endless chain 108 moves the distance L2, the spraying device main body 37 corresponds to the second seedling placement portion 10a from the left side of the page. Does not reach the position to be. Therefore, the control unit 40 performs control so that the endless chain 108 moves by an amount (distance L1) obtained by adding the interval d to the distance L2. In this manner, by correcting the position of the spraying device main body 37 by d, the spraying device main body 37 can be appropriately positioned at a position corresponding to the second seedling placement unit 10a from the left side of the drawing.

[Farm chemical spraying device]
Next, a field medicine spraying device C for spraying a medicine (herbicide etc.) on the field will be described.
As shown in FIG. 13 and FIG. 14, the field medicine spraying device C has a hopper 41 for storing powdered medicine (herbicide), a feeding section 42 for feeding the stored medicine by a predetermined amount, and a fed medicine. A spreading mechanism 69 that diffuses and spreads on the planting trace with a lateral width corresponding to the planting width, a feeding unit 42, a spreading case 70 that houses the spreading mechanism 69, and the like are provided. As shown in FIG. 1, the seedling planting device 5 (transmission case 6) is connected and supported via a support portion 68 at the rear portion.

  As shown in FIGS. 13 and 14, the hopper 41 is formed with a single downflow cylinder 41 a that opens downward at a central rear portion. The entire hopper 41 is detachably fitted to the upper end of a cylindrical portion 70a connected to the upper central portion of the spray case 70, and is fastened by left and right buckles 81 provided in the cylindrical portion 70a. Yes. An inner case portion 70b that opens upward is provided inside the cylindrical portion 70a of the spray case 70, and the feeding portion 42 is provided inside the inner case portion 70b.

The feeding unit 42 includes a pan 72, a pan driving mechanism 76, and the like. The feeding unit 42 feeds a medicine from the medicine flow-down opening a formed at the lower end of the flow-down cylinder 41a by the eye plate 72 and supplies the medicine to the diffusion mechanism 69. To do.
The eye plate 72 is formed of a thick resin material having a fan shape in a plan view, and the eye plate 72 is supported by the hopper 41 so as to be swingable around the vertical axis P and not to be dropped. A pair of feed holes b penetrating vertically is formed near both ends of the outer periphery of the eye plate 72, and each feed hole b is formed by the eye plate 72 reciprocally swinging horizontally around the vertical axis P. Moves between a drug receiving position facing the drug flow lower opening a and a position away from the drug flow lower opening a. The eye plate 72 is driven to swing back and forth by an eye plate driving mechanism 76 having a stepping motor 75.

A pair of left and right funnel-shaped flow guide portions 70c are formed at the rear portion of the bottom surface of the inner case portion 70b, and a shield plate 74 made of a spring plate material is screwed and fixed to the entrance portion in a horizontal cantilever manner. ing. The shielding plate 74 is elastically pressed against the lower surface of the eye plate 72, whereby the upper surface of the eye plate 72 is brought into close contact with the lower end of the flow-down cylinder 41 a, and the shielding plate 74 is brought into close contact with the lower surface of the eye plate 72. It comes to move. In the state where the delivery hole b is located at the medicine receiving position facing the medicine flow lower port a, the lower part of the delivery hole b is blocked by the shielding plate, and in the state where the delivery hole b is located away from the drug flow lower port a. The lower part of the feeding hole b is configured to be opened. In the state where the delivery hole b is located at the medicine receiving position facing the medicine flow-down port a, the drug 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 drug flow-down port a is closed by the eye plate 72.
Further, a brush 73 acting on the upper surface of the eye plate 72 is provided on the left and right of the lower end portion of the flow-down cylinder 41a, and the medicine supplied and filled in the feeding hole b is slid by the brush 73 so as to feed out a fixed amount. It is configured.

  The right side portion (not shown) of the driver seat 24 is provided with a volume type speed adjuster 125 for finely adjusting the drive speed (drive cycle) of the stepping motor 75, and the speed adjuster 125 is operated. Thus, the driving cycle of the stepping motor 75 can be adjusted to finely adjust the amount of medicine delivered per unit time.

  Therefore, the eye plate 72 is reciprocally driven by the eye plate driving mechanism 76 to change the position of the delivery hole b to the position facing the medicine flow-down port a and the position away from the drug flow-down port a. When in the position facing the mouth a, the delivery hole b is closed by the shielding plate 74 from below, so that the medicine in the hopper 41 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 a position where it is removed from the feed hole b, the feed hole b is released from the shielding plate 74 and opened downward, so that the medicine in the feed hole b is dropped and discharged to the flow guide part 70c.

The diffusion mechanism 69 includes a diffusion blade 77 and an electric motor 78 that are rotatable around the horizontal axis P1 in the left-right direction. The transmission belt spans between the input pulley 77a of the diffusion blade 77 and the input pulley 78a of the electric motor 78. By winding 82, the medicine delivered by the delivery part 42 is diffused.
That is, a diffusion chamber S opened downward and rearward is formed inside the spray case 70, and the diffusion chamber S communicates with the inside of the flow guide portion 70c. The medicine fed out and discharged to the flow guide part 70 c is dropped and supplied to the diffusion chamber S, and the medicine dropped and supplied to the diffusion chamber S is diffused by the diffusion blade 77 rotated by the electric motor 78, As shown in FIG.

[Activation switch of the medicine spraying device]
A switch 101 for switching the seedling placement medicine spraying device B shown in FIG. 13 between an operating state and a non-operating state and a switch 102 for switching the field medicine spraying device C between an operating state and a non-operating state are provided on the driving seat 24. It is arranged on the right side (not shown).
Since both switches 101 and 102 are arranged on the lateral side of the driver's seat 24, the switch operation is performed while visually confirming the operating states of the seedling placement surface medicine spraying device B and the field medicine spraying device C arranged at the rear. It is possible to ensure good operability.

[Measuring mode switching means of field medicine spraying device]
Further, on the right side (not shown) of the driver's seat 24, a spreading mode in which the feeding section 42 is driven to feed the medicine (powder) and the diffusion blade 77 is rotated to spread the medicine, and the diffusion blade. 77 is provided with a mode switching means 110 comprising a changeover switch for switching to a measurement mode for collecting the medicine released downward from the discharge port 70d by driving the feeding section 42 while stopping 77.

  The mode switching means 110 may be a push button type on / off switch or the like as long as it is an operation tool that can be operated artificially. However, the operation switch 110a and the switch operation switch are turned on so that the switch on / off operation can be easily recognized. It is composed of two switches 110b.

  Two left and right hooks 124 (support portions) are attached to the inner wall surface 123 at the lower end of the diffusion chamber S. The hook 124 is used to suspend a collection container (not shown) that collects the delivered medicine when the amount of medicine sprayed by the field medicine spraying device C is measured. In addition, a flexible pipe (such as a hose not shown) that is inserted into the lower end 70e of the flow guide part 70c and guides the container is prepared.

  When spraying the medicine, the on / off switch 110a of the mode switching means 110 is pressed to drive and rotate both the feeding part 42 and the diffusion blade 77 to set the spray mode in which the medicine is sprayed. In the spraying mode, when the cutting operation switch 110b is pushed, the diffusion blade 77 is stopped and the measuring mode is switched to drive only the feeding unit 42. Note that when the same switch of the on / off switch 110a or the turn-off switch 110b is pressed a plurality of times, the mode that was initially pressed is maintained.

When measuring the amount of medicine sprayed, weigh the containers and flexible pipes in advance, and set the switch 102 for switching the field medicine spraying device C between the operating state and the non-operating state to the non-operating state. In addition, the container (not shown) is suspended from the hook 124 and the flexible pipe (hose) is connected to the flow-down guide portion 70c in a state in which the cut-off operation switch 110b of the mode switching unit 110 is pressed to enter the weighing mode. It connects with the lower end 70e, and makes the other end of flexible piping face in a collection container.
In this state, the switch 102 is turned on to operate the field medicine spraying device C so that the medicine is quantitatively delivered per unit time from the delivery portion 42 with the diffusion blades 77 stopped. Released from 70d. The released medicine is collected in a collection container through a flexible pipe.

  After the agricultural chemical spraying device C is activated for a predetermined time, the switch 102 is turned off to operate the agricultural chemical spraying device C in a non-actuated state, and the lower end 70e of the flow collecting guide 70c and the collection container for collecting the chemicals. Weigh the total weight including the flexible tubing removed from the.

  Thereby, the weight of the medicine drawn out from the field medicine spraying device C during the predetermined time is accurately measured. When the measured amount of the medicine is smaller than the planned (or standard) application amount, the speed adjuster 125 is operated to the increase side, and when it is larger, the speed adjuster 125 is operated to the decrease side (fine adjustment). When obtaining the accuracy of the scheduled spraying amount, the desired spraying amount per unit time can be obtained by repeating the measurement.

[Another embodiment]
(1) In the above embodiment, in addition to the field medicine spraying device C for spraying the medicine to the field, seedling placement surface medicine spraying the medicine to the seedlings placed on the fertilizer A or the seedling placement unit 10a Although the apparatus B is provided, these do not need to be equipped.

(2) FIG. 16 is a partially longitudinal rear view showing the delay means TS of the seedling surface medicine spraying device B of another embodiment. As shown in FIG. 16, the stopper 126 protruding upward is fixed to the endless chain 108, and a pair of left and right contact members 127 and 127 are fixed to the mounting portion 60 at the rear portion of the feeding case 45 with the stopper 126 interposed therebetween. Thus, the delay means TS is formed to feed the endless chain 108 by a distance d. Accordingly, when the stopper 126 moves between the pair of contact members 127 and 127 by the distance d, the stopper 126 is engaged with either of the pair of contact members 127 and 127, and the transfer of the spraying device main body 37 is started. Is done. While the endless chain 108 is idled, the medicine is fed out, and the transfer of the spraying device main body 37 is started when the medicine is discharged from the opening 49a of the nozzle 49, as in the above embodiment.

(3) When the delay means TS is not provided, the feeding roll 79 rotates in conjunction with the movement of the spraying device main body 37 to feed out the medicine. In this case, since the medicine has not reached the opening 49a of the nozzle 49 at the start of movement, a dispersion delay occurs. Since the medicine remains in the nozzle 49 at the moment when the spraying device main body 37 stops at the end of the seedling platform 10, this medicine may be concentrated and sprayed at the right or left end of the seedling platform.
FIG. 17 shows a distribution of transfer speeds in which the transfer speed of the spraying device main body 37 is controlled in order to reduce idle feeding and concentrated spraying of the spraying device main body 37. The movement speed of the spraying device main body 37 in the middle when the spraying device main body 37 is moved from the right end to the left end or from the left end to the right end of the seedling platform 10 is set to the normal speed V1, and the movement is stopped within a predetermined narrow distance from the movement start position. The speed is controlled so that the speed between the predetermined small widths to the position becomes a predetermined low speed V2. As a result, the idle feed distance at the start of movement is shortened and the concentrated spraying at the time of stop is alleviated. The distance between the predetermined small widths is determined by moving the endless chain 108 at a low speed V2 between a predetermined time t1 when the movement is started and a predetermined time t2 when the movement is stopped. The predetermined time t1 corresponds to the drop time of the medicine until the medicine delivered from the delivery roll 79 is released from the opening 49a of the nozzle 49.

  The speed control can also be applied to the embodiment provided with the delay means TS. Since the delivery amount of the medicine synchronizes with the moving speed of the spraying device main body 37, when adopting the configuration in which the speed control is applied to the embodiment provided with the delay means TS, there is no excess or deficiency at the start of movement, Since concentrated spraying is relaxed at the time of stoppage, the spraying accuracy is improved as compared with the case where only the delay means TS is provided.

(4) FIG. 18 shows another embodiment of the seedling surface drug spraying device B, in which the tank 46 for storing the drug and the spraying device main body 37 are separated. The tank 46 is fixed to the left and right center of the seedling mount 10 via a member (not shown). The tank 46 and the spraying device main body 37 are connected by a flexible hose 128. Since the tank 46 does not move to the left and right with respect to the seedling table 10 when spraying the medicine, the capacity of the tank 46 can be increased, and the center of gravity moves in the left and right direction as a whole as the seedling table 10 is small. Therefore, it is possible to spray the medicine while planting with high accuracy.

(5) FIG. 19 is a modification of FIG. 18 in which the tank 46 for storing the medicine and the spraying device main body 37 are separated from each other, and the tank 46 is fixed to the left and right center of the seedling stage 10 via a member not shown. is there. The tank 46 and the spraying device main body 37 are arranged close to each other. A small amount of medicine can be stored in the spraying device main body 37, and the upper side is opened. A delivery part 129 is provided at the lower part of the tank 46, and the medicine delivered by the delivery part 129 is configured to be discharged downward through the hose 130. The transfer mechanism 44 is provided with position detecting means (not shown) for detecting the forward rotation position and the reverse rotation position of the endless chain 108. When the spraying device main body 37 is located immediately below the opening of the hose 130, the spraying device main body. The position 37 is detected by a position detecting means (not shown), and based on the detection result, the medicine in the tank 46 is fed by the feeding section 129 and stored in the container of the spraying device main body 37. Also in this case, since the tank 46 does not move to the left and right with respect to the seedling stage 10 when spraying the medicine, the capacity of the tank 46 can be increased and the whole seedling stage 10 can be moved in the left and right direction. The center of gravity shift is reduced, and the medicine can be sprayed while planting with high accuracy. Since the structure of FIG. 19 does not require the long flexible hose 128 like the structure of FIG. 18, the layout of the tank 46 is easy.

(6) FIG. 20 shows a large-capacity hopper 131 for accommodating a seedling placement surface medicine and a large-capacity hopper 132 for accommodating a field medicine above the hopper 12 of the fertilizer A at the rear of the traveling machine body 28. Another embodiment provided is shown. The capacity of the hopper 46 of the seedling loading surface medicine spraying device B and the capacity of the hopper 41 of the field medicine spraying device C are reduced, and the large capacity hopper 131 and the small capacity hopper 46 for accommodating the seedling placement surface medicine, and the field A large-capacity hopper 132 for storing a drug for use and a small-capacity hopper 41 are connected to flexible hoses 133 and 134, respectively. Thereby, the operator can replenish the hoppers 41 and 46 without getting off the traveling machine body 28.
The medicine is transferred from the large-capacity hoppers 131 and 132 by the self-weight dropping method, but may be fed by a driving force such as an electric motor by providing a feeding portion.

(7) In the field medicine spraying device C, the on / off operation switches 110a and 110b are abolished, and a lid (not shown) that can be opened and closed on the lateral wall on the side of the transmission motor 78 of the spraying case 70 shown in FIGS. May be provided. Thus, the weighing mode is set by opening the lid and removing the transmission belt 82 from the outside, and the spraying mode is set by attaching the transmission belt 82.

  The present invention can be applied not only to a riding type rice transplanter but also to a paddy field working machine including a riding type direct seeder.

42 Feeding part 70d Discharge port 77 Diffusion blade 110 Mode switching means 124 Supporting part

Claims (2)

In the powder distribution device provided with a feeding blade for feeding the powder and a diffusion blade for diffusing the discharged powder under the discharge port for discharging the powder fed by the feeding unit,
A sprinkling mode in which the diffusion blades are rotated while the feeding unit is driven to feed the powder particles and the powder particles are sprinkled, and the diffusion blade is stopped and the feeding unit is driven to move downward from the discharge port. A granular material spraying device provided with mode switching means for switching to a measuring mode for collecting the granular material released into the container.   2. The granular material spraying device according to claim 1, further comprising a support portion capable of supporting a collection container for receiving the granular material discharged downward from the discharge port, below the discharge port.

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