JP2004201562A - Applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an applicator with which an application material is more uniformly scattered and applied from a long sideways application cover of downward opening by a scattering wing. <P>SOLUTION: A scattering impeller 59 and an application material dropping hole 37 are arranged in eccentricity on either of right and left from the central part C in the right and left width direction of the long sideways application cover 12 of the downward opening. The rotation direction of the scattering impeller 59 is opposite to the direction of the right and left eccentric arrangement in the application cover 12 when viewed above. The application material dropping hole 37 is arranged above one right and left side in the same direction as the rotation direction of the scattering impeller 59 in a rotary plane P of the scattering impeller 59 when viewed above and the rear one side in the rotation direction of the scattering impeller 59. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a spraying machine suitable for spraying a spraying material such as a granular pesticide or a fertilizer on a field such as a field.
[0002]
[Prior art]
For example, as an agricultural spraying machine for spraying a spraying material such as a granular pesticide or fertilizer on a field such as a field, a flying impeller rotating around a vertical axis in a box-shaped spraying cover having a horizontally downward opening. The scattered material in the scattered material container disposed above the scatter cover is dropped onto the scattered impeller from the scattered material dropping port, and scattered by the scattered impeller to be scattered. Sprayers are known.
[0003]
Conventionally, the scattering impeller is arranged at the center in the left-right width direction of the scatter cover, whereby it has been considered that the scatter material is uniformly scattered and scattered from the scatter cover (for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent No. 2744214 (FIGS. 3 and 4)
[0005]
[Problems to be solved by the invention]
However, since the scattering impeller has a vertical rotation axis, the scattered material dropping port for supplying the scattered material onto the scattered impeller is inevitably provided from the center of the rotating surface of the scattered impeller. It has to be arranged at a position shifted to the side. Moreover, since the scatter wheel rotates only in one direction, the scatter material is not uniformly radiated around the scatter wheel, and therefore, the scatter material is evenly scattered from the scatter cover. The fact was that it could not be said that it would be sprayed.
[0006]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a spraying machine in which a spraying material can be uniformly scattered by a scattering impeller from a spray cover having a horizontally long downward opening and sprayed.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a spraying machine according to the present invention includes a spraying material container for storing a spraying material, a spray cover having a horizontally long downward opening disposed below the spraying material container, and a vertically extending spray cover in the spraying cover. A scattered impeller that rotates about an axis; and a scattered material drop port for allowing the scattered material in the scattered material container to fall naturally on the scattered wheel, wherein the scattered wheel and the scattered material drop port are provided. Are disposed so as to be deviated leftward or rightward from a central portion of the spray cover in the left-right width direction, and the rotation direction of the scattering impeller is such that the rotational direction of the right and left in the spray cover is viewed from above. And the sprinkling material falling port is the same left and right half of the rotation direction of the scattering impeller on the rotation surface of the scattering impeller when viewed from above, and the second half of the rotation direction of the scattering impeller. (Claim 1).
[0008]
According to the present invention, when the scattered material in the scattered material container falls from the scattered material falling port onto the scattered impeller rotating in the scatter cover, the scattered material is scattered by the scattered wheel. The sprinkling material is guided by the inner surface of the sprinkling cover, and is sprinkled evenly on the rice field or the like from the sprinkling cover having a horizontally long downward opening.
[0009]
Here, in the present invention, first, the scattering impeller and the spraying material dropping port are disposed so as to be deviated leftward or rightward from a central portion of the spraying cover in the left-right width direction. Secondly, the direction of rotation of the flying wheel is opposite to the direction of the rightward or leftward disposition in the spraying cover when viewed from above. Third, the spray material dropping port is located above the left and right half surfaces in the rotation direction of the scattering impeller on the rotation surface of the scattering blade wheel and the rear half surface in the rotation direction of the scattering impeller when viewed from above. It is arranged.
[0010]
That is, specifically, for example, when the scatter wheel and the scattered material drop port are disposed so as to be displaced rightward from the center in the left-right width direction of the scatter cover, the scatter wheel is provided. Is rotated counterclockwise when viewed from above, and the spraying material drop port is biased to the left half of the rotation surface of the scattering impeller and the rear half of the rotation of the scattering impeller when viewed from above. That is, it is arranged. Conversely, when the scatter wheel and the scattered material drop port are disposed so as to be deviated leftward from the center of the scatter cover in the left-right width direction, the rotation direction of the scatter wheel is upward. The sprinkling material falling port is disposed so as to be deviated to the right half surface of the rotating surface of the flying impeller and the second half surface in the rotating direction of the flying impeller when viewed from above. Will be.
[0011]
According to an experiment, it was confirmed that the spraying material was uniformly sprayed from the spray cover having a horizontally long downward opening with the above configuration.
[0012]
As a preferred embodiment, the scattered material container is arranged such that the scattered impeller and the scattered material dropping port are disposed at right or left positions of the scattered impeller and the center of the scattered cover in the left-right width direction. It may be arranged so as to be deviated in the same direction on either the left or right (claim 2). With this configuration, the flow path of the spray material from the spray material container to the spray material drop port can be made as close as possible in the vertical direction, so that the dispensing of the spray material can be smoothly performed. In addition to this, the outer shape of the dispensing portion of the spraying material can be made slim, which is preferable.
[0013]
As a preferred embodiment, within the scatter cover, the scatter wheel and the scattered material dropping port are disposed on the right and left opposite sides from the scatter wheel in a left-right opposite direction when viewed from above. It is also possible to provide a reflecting surface for reflecting the flying-out scatter material in a direction opposite to the left and right direction from the position where the scatter wheel is biased (claim 3). With this configuration, the reflecting surface allows a sufficient amount of the scattered material to be spread in the direction opposite to the position where the scattered impeller is biased in the scatter cover, that is, to the side far from the scattered impeller. Since it is supplied after being reflected, the uniform spraying property from the spray cover is further improved, which is preferable.
[0014]
Furthermore, as a preferred embodiment, if the reflection surface is arranged at the center in the width direction of the scatter cover (claim 4), the uniform scatterability from the scatter cover is further improved. Good and suitable.
[0015]
As another preferred embodiment, a sprinkling material feeding mechanism of a natural fall type is provided between the spraying material container and the spraying cover, and the spraying material feeding mechanism includes a spraying material extending downward from the spraying material container. A sprung material drop passage, an obliquely downward spray material feed port communicating with the sprinkle material drop passage and the sprinkle material drop port, a swing open / close valve for opening and closing the sprinkle material feed port, and driving the open / close valve And a driving source that performs the operation (claim 5).
[0016]
In this case, the drive source swings and opens and closes the opening / closing valve, thereby opening and closing the sprinkling material delivery port, and controlling the drop supply of the sprinkling material to the sprinkling material drop port. According to the present embodiment, the sprinkling material feeding mechanism is a natural drop type, and the opening / closing of the spray material feeding port obliquely downward is controlled by swinging the open / close valve. Can be made compact or slim, which is preferable.
[0017]
As a preferred embodiment, a swing member that swings integrally with the on-off valve, and an operation amount regulating member that abuts on the swing member to regulate an opening operation amount of the on-off valve, The actuation amount regulating member may be provided with a helical cam centered on the rotation operation shaft (claim 6).
[0018]
In this case, the opening operation amount of the on-off valve is regulated by the swing member swinging integrally with the on-off valve abutting on the actuation amount regulating member. The actuating amount regulating member includes a helical cam centered on the rotation operation axis, so that when the rotation operation is performed on the rotation operation axis as a center, the helical cam of the swing member is rotated. The contact position of the rotary operation shaft changes along the axial direction of the rotation operation axis. Thereby, the opening operation amount of the on-off valve is adjusted, and the amount of spray from the spray cover is adjusted.
[0019]
As a preferred embodiment, it is also possible to provide a detachable spray width control surface which is disposed inside the spray cover and controls the spray width in the left-right direction of the spray cover (claim 7). . In this case, by attaching the spray width control surface to the inside of the spray cover, it is possible to reduce the spray width in the left-right direction of the spray cover, and by removing the spray width control surface, the original of the spray cover is removed. It can be returned to the spray width.
[0020]
As a preferred embodiment, the spray width control surface is formed on both front and back surfaces of the spray width control plate, and the mounting bracket to the spray cover is formed on the spray width control plate so as to rise from the spray width control surface. The sprinkling cover may be formed with a mounting receiving portion of the mounting bracket which can be attached to the sprinkling width control plate by changing the front and back thereof (claim 8). In this case, since the mounting bracket is formed so as to rise from the scatter width control surface, the front and back of the scatter width control plate are changed so that the mounting bracket and the mounting receiving portion are joined to each other, The position of the spray width control surface in the spray cover can be changed in two stages. Therefore, by preparing one scatter width control plate for each of the left and right sides, the scatter width can be reduced in two stages, so that the number of parts is reduced and the cost is also advantageous, which is preferable.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
[0022]
FIG. 1 is a schematic left side view of a rice transplanter 2 on which a sprayer 1 according to an embodiment of the present invention is mounted, FIG. 2 is a perspective view showing the sprayer 1 from a diagonally left rear, and FIG. FIG. 2 is a plan view showing an arrangement relationship between the rice transplanter 2 and the sprayer 1.
[0023]
In FIG. 1, a seedling planting device 6 with a fertilizer device 5 having a well-known configuration is provided at a rear portion of a traveling machine body 3 of the rice transplanter 1 of a riding type via a lifting mechanism 4 such as a parallel linkage type. Are linked. The sprayer 1 according to one embodiment of the present invention is disposed behind the fertilizer application device 5. The sprayer 1 is electrically connected to a battery 7 mounted on the traveling machine body 3 and operates in conjunction with the planting operation of the rice transplanter 2, and operates over the planting width of the rice transplanter 2. Then, a spraying material S such as a granular pesticide is intermittently sprayed on the rice field.
[0024]
As shown in FIGS. 1 and 2, the spraying machine 1 includes a spraying material container 8 for storing the spraying material S, and a spraying material feeding mechanism 9 for feeding out the spraying material S in the spraying material container 8. And a diffusing and discharging unit 11 for diffusing the spraying material S fed from the spreading material feeding unit 10 and discharging the spread material S to the field. A mudguard 13 made of a vinyl sheet or the like is provided at the front edge of the horizontally spreading spray cover 12 constituting the diffusion and emission portion 11 so as to hang down horizontally. The mudguard 13 prevents the mud that has been jumped up to the rear of the seedling planting device 6 by the planting claws 14 and the like constituting the seedling planting device 6 from entering the spray cover 12 and attaching thereto. I do.
[0025]
As shown in FIG. 3, the spraying machine 1 is disposed such that the length direction of the spraying cover 12 coincides with a horizontal direction perpendicular to the traveling direction F of the rice transplanter 2. Is mounted on the rice transplanter 2 so that the central portion C in the length direction is located at the center of the planting width W of the rice transplanter 2.
[0026]
As shown in FIGS. 1 and 3, the sprayer 1 includes a pair of left and right mounting arms 15 extending in the traveling direction F of the traveling machine body 3. An appropriate fixing portion of the seedling planting device 6, for example, a planting transmission case 16 (see FIG. 3) is provided with a spreader support frame 17 by an appropriate method such as screwing. The mounting arms 15, 15 are fixed to a horizontal frame 18 constituting the sprayer support frame 17 by an appropriate fixing means such as a hand-tightening screw 19.
[0027]
With reference to FIG. 2 and FIG. FIG. 4 is a left side view of the spraying material container 8.
[0028]
The sprinkling material container 8 is a container body for storing the sprinkling material S, a hopper 20 having a regular square cylindrical upper part and a lower regular square pyramid shaped lower part, and a lid body for opening and closing the upward opening 21 of the hopper 20. 22. The lid 22 has a front end 22 a pivotally supported by a front edge of an upper portion of the hopper 20. For this reason, the operator can open and close the upward opening 21 by swinging the rear side of the lid 22 up and down around a pivot axis X extending in the left-right direction of the traveling body 3. it can. Therefore, the work of putting the spraying material S into the hopper 20 can be easily performed from the rear of the sprayer 1 mounted on the rice transplanter 2.
[0029]
Further, the sprinkling material container 8 includes a shelf 24 on which a bag (container) 23 of the sprinkling material S to be put can be placed when the sprinkling material is put. The sprinkling material placing shelf 24 can be disposed outside the hopper 20. However, in the present embodiment, the spread material placing shelf 24 is located at a position covering a part of the spread material storage space 25 of the hopper 20 and substantially the same as the spread material input port 21a of the hopper 20. At the height HL. Therefore, when the lid 22 is closed, the sprinkling material placing shelf 24 is also covered with the lid 22. When the lid 22 is opened, the sprinkling material placing shelf 24 appears, and the portion of the upward opening 21 of the hopper 20 which is not closed by the sprinkling material placing shelf 24 is the spout material loading port. 21a.
[0030]
Specifically, the sprinkling material mounting shelf 24 is configured to close a part of the upward opening 21 of the hopper 20, that is, a counter pivot side (rear side) of the lid 22 in the hopper 20. , On the hopper 20. Accordingly, as shown by a solid line in FIG. 4, the loading operation (supplying operation) of the sprinkling material S is performed by opening the lid 22 upward, placing the new sprinkling material bag 23 on the sprinkling material mounting shelf 24, It is only necessary to lay the bag 23 on the spreader rack 24 so that the open mouth 23a of the bag 23 faces downward. Therefore, the worker can perform the supply operation of the sprinkling material S labor-saving and reliably. Further, since the sprinkling material placing shelf 24 is contained within the outline of the hopper 20, the sprinkling material placing shelf 24 does not hinder the spraying operation or the like, which is preferable.
[0031]
The sprinkling material mounting shelf 24 may be fixed to the hopper 20 by an appropriate method such as screwing. However, in the present embodiment, the sprinkling material mounting shelf 24 is designed to be easily detached as needed. , It is a simple detachable type. That is, the plate-shaped sprinkling material placing shelf 24 is provided with a downwardly bent elastically deformable locking portion 26 that engages with the outer surface of the upper edge of the hopper on both left and right edges and a rear edge thereof. Thus, the state of attachment to the hopper 20 is maintained. The dispersing material placing shelf 24 can be easily removed from the hopper 20 simply by releasing the engagement state of the locking portion 26 with the hopper 20. Therefore, it is convenient when cleaning the inside of the hopper 20 or the like.
[0032]
As shown in FIG. 2, the right and left width w1 of the sprinkling material placing shelf 24 is set to a size corresponding to the right and left width of the hopper 20. On the other hand, the front-rear width w2 of the sprinkling material mounting shelf 24 is set to an appropriate size in consideration of the mounting stability of the sprinkling material bag 23 and the size of the sprinkling material inlet 21a. can do. As shown in FIG. 4, in the embodiment of the drawing, the front-rear width w2 of the sprinkling material placing shelf 24 is about １ ／ of the front-rear width of the upward opening 21 of the hopper 20.
[0033]
The operator moves the lid 22 upward within a predetermined angle range θ in which the swinging end 22b of the lid 22 is located within the contour of the upper surface of the scattered material placing shelf 24 when viewed from above. It is desirable to open and perform the work of putting the scattered material S using the scattered material placing shelf 24. In this way, when viewed from above, a state where the entire upward opening 21 of the hopper 20 is completely covered by both the lid 22 and the sprinkling material mounting shelf 24 is ensured. Therefore, even if it is raining when the sprinkling material is thrown, it is difficult for rain to enter the hopper 20. For this reason, although not shown, between the hopper 20 and the lid 22, even if the hand is released from the lid 22, the lid 22 is kept at the maximum angle within the predetermined angle range θ. It is preferable to provide a lid-opening-position holding means such as a collapsible rod type or a mutual pressure-welding type for holding the open state to the maximum.
[0034]
Left and right sides 27, 27 of the lid 22 extend downward along left and right outer surfaces 28, 28 of the hopper 20. The downwardly extending side portions 27, 27 have a length that reaches the left and right outer surfaces 28, 28 of the hopper 20, even when the lid 22 is opened up to the maximum angle of the predetermined angle range θ. In addition, it is possible to prevent rain from entering the hopper 20 from the left and right sides when the sprinkling material is put in the rain.
[0035]
As a modified example, as shown by an imaginary line in FIG. 4, the sprinkling material placing shelf 24 pivotally supports the hopper 20 so as to be capable of opening and closing and swinging obliquely rearward as necessary. In the state of being opened and held, it can be used as a chute for distributing material.
[0036]
Next, with reference to FIG. 5 to FIG. 8, the spraying material feeding section 10 constituting the spraying mechanism will be described. 5 is a longitudinal rear view of the spraying machine 1, FIG. 6 is a partially cutaway perspective view of the spraying material feeding section 10, and FIGS. 7 and 8 are enlarged perspective views of a main part of a spraying material feeding amount adjusting mechanism. is there.
[0037]
As shown in FIGS. 5 and 6, the sprinkling material feeding section 10 includes a vertically long rectangular parallelepiped case 29 and the sprinkling material feeding mechanism 9 built in the case 29. The sprinkling material feeding mechanism 9 is a natural drop type in which the sprinkling material S is spontaneously fed from the hopper 20 by gravity, and the sprinkling material feeding nozzle 30 and the obliquely downward sprinkling of the An on-off valve 32 for opening and closing the material feeding port 31 and a solenoid 33 as a drive source for the on-off valve 32 are provided.
[0038]
Specifically, a lower end 35 opened downward at the center of the hopper 20 is inserted into the upper opening 34 of the case 29, and the hopper 20 is detachably attached to the case 29 by screwing or the like. It is connected and fixed by any appropriate method. The lower end portion 35 of the hopper 20 is connected to a downwardly extending hose 36 made of a transparent vinyl tube or the like. The lower end portion of the hose 36 is connected to the hose 36 and constitutes a sprinkling material drop passage. The upper end of the nozzle 30 is connected. A funnel 38 having a scattered material drop port 37 at a lower end thereof is vertically arranged below the scattered material discharge port 31 of the scattered material discharge nozzle 30.
[0039]
It is preferable that the window 29a be formed on the peripheral wall of the case 29 at a position corresponding to the hose 36, so that the discharge state of the spraying material S can be visually recognized. In particular, if the window portion 29a is formed on the front surface of the case 29, the window portion 29a can be confirmed even from the driver's seat of the rice transplanter 2 during the spraying operation.
[0040]
In the embodiment shown in the drawings, the lower part of the spraying material delivery nozzle 30 is bent to form the spraying material delivery opening 31 obliquely downward, but the spraying material delivery nozzle 30 is formed to be vertically straight. Alternatively, the lower portion may be cut off obliquely to form the sprinkling material feeding port 31.
[0041]
The opening / closing valve 32 is formed by attaching a sponge-like sealing material 40 to a swinging lower end portion 39 a of a swinging member 39 shaped like a letter viewed from the side. The swing member 39 is pivotably supported by a bracket 41 fixed to the inner surface of the case 29. When the swing member 39 swings about a horizontal pivot shaft 42, the on-off valve 32 opens and closes the spray material delivery port 31.
[0042]
As shown in FIG. 6, it is preferable to provide a spray material spill prevention cover 80 surrounding between the spray material delivery nozzle 30 and the funnel 38.
[0043]
According to the present embodiment, the sprinkling material feeding mechanism 9 is of a natural drop type, and the swinging member 39 swings in the case 29, whereby the spraying material feeding obliquely downwards by the open / close valve 32. Since the opening and closing of the mouth 31 is controlled, the outer shape of the spraying material feeding mechanism 9 can be made compact or slim, which is preferable.
[0044]
The solenoid 33 is fixed inside the case 29. The telescopic rod 43 of the solenoid 33 is connected to a pin 45 loosely inserted in a vertically long hole 44 formed on the swing member 39, and the swing member 39, the solenoid 33, In the meantime, as a biasing means for constantly biasing the swinging member 39 in a direction in which the on-off valve 32 closes the spraying material delivery port 31, that is, in a counterclockwise direction as viewed in FIG. A spring 46 is interposed. The solenoid 33 is connected to a switch 47 (see FIG. 3) of an electric circuit that uses the battery 7 (see FIG. 1) as a power source, and is energized, thereby resisting the urging force of the compression coil spring 46. Then, the telescopic rod 43 is contracted. Thereby, the swinging member 39 is swingably driven clockwise as viewed in FIG. 5, the spouting material feeding port 31 is opened, and the sprinkling material S in the hopper 20 is moved into the funnel 38. And fall naturally.
[0045]
The spraying material feeding section 10 also includes a spraying material feeding amount adjusting mechanism, that is, a spraying amount adjusting mechanism 48. The spray amount adjusting mechanism 48 includes an operation amount regulating member 49 that abuts on the swing member 39 and regulates an opening operation amount of the on-off valve 32. The operation amount regulating member 49 has a rotation operation shaft. The spiral cam 50 is provided.
[0046]
The actuation amount regulating member 49 is disposed in the case 29 adjacent to an upper portion of the swing member 39. A metering operation shaft 51 that penetrates the case 29 is attached to the operation amount regulating member 49 as the rotation operation shaft, and an outer end portion of the metering operation shaft 51 is provided as a metering operation member. The metering dial 52 is attached. The metering dial 52 is exposed outside the case 29.
[0047]
The swing upper end 39b of the swing member 39 is constantly urged in a direction away from the solenoid 33 by the urging force of the compression coil spring 46. The rod 43 contracts and swings in a direction approaching the solenoid 33. When the swing upper end 39b of the swing member 39 comes into contact with the spiral cam 50 of the operation amount regulating member 49, the swing operation of the swing member 39, that is, the on-off valve 32 Is restricted.
[0048]
As shown in FIGS. 7 and 8, since the operation amount regulating member 49 includes the spiral cam 50 on its outer peripheral surface, the adjustment dial 52 is turned to rotate the adjustment operation shaft 51. When operated, the mutual contact position between the swing upper end portion 39b of the swing member 39 and the spiral cam 50 changes along the axial direction of the metering operation shaft 51. Thereby, the swingable amount of the swing member 39 when the solenoid 33 is energized, that is, the opening operation amount of the on-off valve 32 can be adjusted, and the spraying from the spraying material delivery nozzle 30 can be performed. The feeding amount of the material S can be adjusted.
[0049]
Next, with reference to FIG. 3 and FIG. 9, a spray material feeding control mechanism of the sprayer 1 will be described. FIG. 9 is an enlarged perspective view of the vicinity of the rightmost planting claw in FIG.
[0050]
In this embodiment, in order to perform uniform spraying according to the planting speed of the rice transplanter 2, the opening and closing operation of the on-off valve 32 of the spraying material delivery unit 10 is performed by planting the planting claws 14 of the rice transplanter 2. The control is performed based on the attachment operation. That is, as shown in FIG. 3, the sprayer 1 includes a sensor 53 that detects the passage of the planting claws 14 and a microcomputer that controls the timing of spraying by the sprayer 1 based on a signal from the sensor 53. And a control device 54 comprising The sensor 53 may be a non-contact type sensor, in particular, a metal that reacts with metal in order to prevent the planting claw 14 from being made of metal and to be operated by a factor other than the passage of the planting claw 14. Sensors can be used.
[0051]
The control device 54 operates, for example, using the battery 7 mounted on the traveling body 3 as a power source, receives a signal from the sensor 53, and opens and closes an electric circuit of the solenoid 33 according to a predetermined program. The switch 47 is turned on and off. For example, when the planting claw 14 performs the planting operation a predetermined number of times, such as three times, by a signal from the sensor 53, a control signal from the control device 54 is issued, and the switch 47 is momentarily turned on. And the opening / closing valve 32 is operated once. Thereby, the amount of the spraying by the sprayer 1 is controlled in proportion to the planting operation speed of the planting claws 14, so that the spraying amount of the spraying material S to a predetermined planting area is reduced by the rice planting machine 2. It is constant regardless of the planting speed.
[0052]
In the present embodiment, as shown in FIG. 9, the sensor 53 is mounted on the support frame 56 of the seedling table 55 of the rice transplanter 2 toward an appropriate position on the operating locus T of the planting claw 14. It is supported by a bracket 57. In this case, which part of the planting claw 14 is detected by the sensor 53 is optional, and may be, for example, the tip portion 14a of the planting claw 14, or an arm holding the planting claw 14. Although it may be the portion 14b, it is desirable to dispose it toward the arm portion 14b which is less likely to be stained with mud.
[0053]
In the present embodiment, since the sensor 53 only needs to be arranged near the planting claws 14, the work of attaching the sensor 53 to the rice transplanter 2 is also easy, which is preferable. Particularly, since the sensor 53 is supported by the support frame 56 of the seedling mounting table 55, the mounting stability of the sensor 53 is good, and the mounting work to the rice transplanter 2 is further facilitated, which is preferable. is there.
[0054]
Further, in the present embodiment, as shown in FIG. 3, in the traveling direction F of the rice transplanter 2, it is adjacent to the outermost (rightward) one of the left and right outermost (rightward) planting claws 14. The sensor 53 is provided. Thereby, the work of attaching the sensor 53 to the rice transplanter 2 is further facilitated.
[0055]
Next, with reference to FIG. 5 and FIG. 10, a description will be given of the diffusion / emission unit 11 that forms a spraying mechanism together with the spraying material feeding unit 10. FIG. 10 is a plan view of the scattering state of the scattered material S in the scatter cover 12 as viewed from above.
[0056]
The diffusion / emission unit 11 includes the spray cover 12 and a scattering impeller 59 that rotates about a rotation shaft 58 that extends in the spray cover 12 in the vertical direction.
[0057]
As shown in FIG. 5, the spray cover 12 includes a rectangular top plate 60, a trapezoidal front side plate 61 and a rear side plate 62 (see FIG. 2) whose skirts are widened symmetrically, and a rectangular top plate 60. And left and right inclined side plates 63 and 64. The length of the spray cover 12 is formed shorter than the planting width W of the rice transplanter 2 (see FIG. 3). However, the sprinkling material S is scattered by the scatter wheel 59 and is guided by the inner surfaces of the left and right inclined side plates 12 so that the right and left widths (planting width) according to the number of planting strips of the rice transplanter 2 are set. W) and diffused uniformly.
[0058]
As shown in FIG. 5, the scattering impeller 59 is disposed rotatably in a horizontal plane at an upper position in the dispersion cover 12, that is, near the top plate 60. The scatter wheel 59 is driven to rotate continuously at a constant speed during the spraying operation by using a DC electric motor 65 operated by using the battery 7 (see FIG. 1) as a power source. The electric motor 65 is disposed in the case 29 of the sprinkling material feeding section 10 with the rotating shaft 58 as an output shaft thereof facing downward. The rotating shaft 58 penetrates through the case 29 and the scatter cover 12, and the scattering wheel 59 is attached to a lower end portion thereof. The flying impeller 59 has, for example, six blades 66 disposed on the upper surface thereof at equal angular intervals.
As shown in FIG. 5, the scattered material falling port 37 is opened above the scattering impeller 59. The scattered material S, which has been freely dropped and supplied from the scattered material drop port 37 onto the scattered wheel 59, is scattered in the scatter cover 12 by the rotation of the scattered wheel 59, and is scattered on the inner surface of the scattered cover 12. While being guided by a collision or the like, the ink spreads over the entire area in the spray cover 12 and is spread and spread to the field.
[0059]
The spraying machine 1 according to the present embodiment is characterized in that the scattering impeller 59 and the spraying material drop port 37 are disposed at positions such that the spraying is performed by uniformly spreading the spraying cover 12 from the entire area thereof. Have. That is, conventionally, the scattering impeller 59 is disposed at the center portion C in the left-right width direction of the spray cover 12, whereby the spray material S is uniformly scattered and sprayed from the spray cover 12. Was considered.
[0060]
However, since the scattering impeller 59 has the rotation shaft 58 at the center of the rotation plane P, the scattering material drop port 37 for supplying the scattering material S onto the scattering impeller 59 is inevitably provided. The scattering impeller 59 must be disposed at a position shifted laterally from the center of the rotating surface P. Moreover, since the scattering impeller 59 rotates only in one direction, the scattering material S is not evenly radiated around the scattering impeller 59, and therefore, the scattering material S is The fact was that it could not be said that it was evenly scattered and scattered.
[0061]
Therefore, in the present embodiment, as shown in FIG. 10, the scattering impeller 59 and the scattered material falling port 37 are located on one of the left and right sides of the center portion C of the scatter cover 12 in the left-right width direction (FIG. 10). In the example of (1), it is disposed so as to be deviated to the right. In addition, the direction of rotation of the flying impeller 59 is opposite to the direction of the left and right offset arrangement in the spraying cover 12 when viewed from above (leftward rotation in the example of FIG. 10). Further, the sprinkling material falling port 37 has the same left and right half planes (left half plane in the example of FIG. 10) as the rotation direction of the scattering impeller 59 on the rotation plane P of the scattering impeller 59 when viewed from above. It is disposed above the rear half surface of the flying impeller 59 in the rotation direction.
[0062]
According to an experiment, it was confirmed that the spraying material S was uniformly scattered and scattered over the planting width W from the scattered cover 12 having a horizontally long downward opening when the configuration was made as described above.
[0063]
The rotational speed of the flying impeller 59 is, for example, about 2,000 rpm.
[0064]
Further, in the present embodiment, in the scatter cover 12, the positions of the scattered impeller 59 and the scattered material falling port 37 on the left and right sides are opposite to each other when viewed from above (in the example of FIG. 10, In the direction of the scattered impeller 59, the scattered material S jumping out of the scattered impeller 59 is disposed on the left and right sides of the scattered impeller 59 and the scattered material falling port 37 (in the example of FIG. 10). , To the left) is provided. The reflection surface 67 reflects and supplies a sufficient amount of the scattered material S to the left space far from the scattering impeller 59 in the scatter cover 12. For this reason, the uniform scatterability from the scatter cover 12 is further improved.
[0065]
According to an experiment, when the reflection surface 67 is disposed at the central portion C in the length direction of the scatter cover 12, it is even more effective for uniform scatter.
[0066]
As shown in FIG. 5, in the present embodiment, the sprinkling material container 8 also has a length corresponding to the right and left offset positions of the scattering impeller 59 and the sprinkling material drop port 37. It is arranged so as to be deviated from the center portion C in the right or left direction (to the right in the example of FIG. 5) from the center portion C in the vertical direction. By doing so, the spontaneous fall path of the scattered material S from the scattered material container 8 to the scattered material dropping port 37, that is, the hose 36 and the scattered material delivery nozzle 30 are connected as much as possible. The scattered material storage space 25 of the hopper 20 is completely symmetrical, and the lower end 35 may be provided at the center thereof. In addition, the feeding of the sprinkling material S can be smoothly performed without clogging or offset, and the outer shape of the case 29 of the sprinkling material feeding portion 10 can be slim.
[0067]
Further, in the present embodiment, the electric motor 65 that drives the flying impeller 59 is disposed in the case 29, and the case 29 is moved in accordance with the position where the flying impeller 59 is biased. The case 29 of the sprinkling material feeding unit 10 can also be provided by disposing the sprinkling cover 12 so as to be deviated in the right or left direction (in the example of FIG. 5, rightward) from the center portion C in the width direction of the sprinkling material 12. Can contribute to the slimming of the external shape.
[0068]
Next, with reference to FIGS. 11 and 12, in addition to FIG. 5, a spray width adjusting mechanism of the spray cover 12 will be described. FIG. 11 and FIG. 12 are perspective views showing a method of adjusting the spray width by the spray width adjusting mechanism.
[0069]
The sprinkling width adjusting mechanism is designed so as to be able to cope with a plurality of types of rice transplanters having different numbers of planting strips by using the single sprinkling cover 12 as it is.
[0070]
As shown in FIG. 5, the sprayer 1 includes a detachable spray width control plate 69 which is disposed inside the spray cover 12 and controls the spray width of the spray cover 12 in the left-right direction. For this reason, by installing the spray width control plate 69 in the spray cover 12, the spray width in the left-right direction of the spray cover 12 can be reduced, and by removing the spray width control plate 69, The spraying cover 12 can be returned to the original maximum spraying width.
[0071]
As shown in FIG. 11, in the present embodiment, the spray width control plates 69 can be disposed inside the left and right inclined side plates 63 and 64 of the spray cover 12, respectively. Each of the spray width control plates 69 has a width w3 corresponding to the front and rear width of the internal space of the spray cover 12, and a length L substantially equal to the left and right inclined side plates 63 and 64 of the spray cover 12. In addition, a spray width control surface 70 is provided on both front and back surfaces.
[0072]
A pair of mounting brackets 71, 71 for attaching the spray cover 12 to the front side plate 61 and the rear side plate 62 are provided on two front and rear sides of each of the spray width control plates 69, respectively. It is formed to stand up from. Fixture insertion holes 72 are formed at the distal ends of the mounting brackets 71, 71. On the other hand, a pair of fixture insertion holes 73, 73 are formed in the front plate 61 and the rear plate 62 of the scatter cover 12 as attachment receiving portions for the attachment brackets 71, 71. In the vicinity of both left and right ends of the lower surface of the top plate 60 of the spray cover 12, locking portions 74 for locking the upper end portions 69a of the respective spray width control plates 69 are formed so as to protrude.
[0073]
As shown in FIGS. 12 (a) and 12 (b), each of the scatter width control plates 69 is freely changed in front and back so that the fixture insertion holes 72 of the mounting brackets 71 and 71 and the scatter cover The fixing tool insertion holes 73 of the twelve pieces 12 can be aligned with each other, and can be fixed to the inside of the spray cover 12 with a fixing tool 75 such as a screw or a pin. According to the scatter width control plate 69, since the mounting brackets 71 are formed so as to rise from the scatter width control surface 70, either one of the front and back surfaces is directed inward of the scatter cover 12. The left and right width of the lower part of the scatter material scattering space of the scatter cover 12 is changed depending on whether the scatter is arranged. Accordingly, by preparing one scatter width control plate 69 for each of the right and left sides, the scatter width can be reduced in two stages, so that the number of parts is reduced and the cost is also advantageous, which is preferable. .
[0074]
As another embodiment of the spray width adjusting mechanism, the left and right inclined side plates 63 and 64 of the spray cover 12 are separated from the top plate 60, the front side plate 61 and the rear side plate 62, and the upper end thereof is provided. It is also possible to pivotally support the top plate 60 so as to be swingable with respect to the top plate 60, and to fix the front plate 61 and the rear plate 62 by changing the inclination angle.
[Brief description of the drawings]
FIG. 1 is a schematic left side view of a rice transplanter equipped with a sprayer according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the spreader of FIG.
FIG. 3 is a plan view showing an arrangement relationship between a rice transplanter and a sprayer in FIG. 1;
FIG. 4 is a left side view of a sprinkling material accommodating portion of the sprinkler of FIG. 2;
FIG. 5 is a longitudinal rear view of the sprayer of FIG. 2;
FIG. 6 is a partially cutaway perspective view of a spraying material feeding section of the sprayer of FIG. 2;
FIG. 7 is an enlarged perspective view of a main part of the spray material feeding amount adjusting mechanism in FIG. 5 at the time of minimum adjustment.
8 is an enlarged perspective view of a main part of the spray material feeding amount adjusting mechanism in FIG. 5 at the time of maximum adjustment.
FIG. 9 is an enlarged perspective view of the vicinity of the rightmost planting claw in FIG. 3;
FIG. 10 is a plan view of the scattering state of the spray material in the spray cover of FIG. 5 as viewed from above.
FIG. 11 is a perspective view from below of a spray cover showing a spray width adjusting mechanism.
FIG. 12 is a perspective view showing a method of adjusting a spray width by a spray width adjusting mechanism.
[Explanation of symbols]
8 spray material container 9 spray material feeding mechanism 12 spray cover 30 spray material drop passage (spray material feeding nozzle)
31 Spray material feeding port 32 On-off valve 33 Drive source (solenoid)
36 Spray material drop passage (hose)
37 Sprinkling material drop port 39 Swinging member 49 Actuating amount regulating member 50 Spiral cam 51 Rotating operation axis (metering operation axis)
58 Vertical axis (rotation axis)
59 Spray wheel 67 Reflecting surface 69 Spreading width control plate 70 Spreading width control surface 71 Mounting bracket 73 Mounting receiving part C Central part P in right and left width direction of spreading cover Rotating surface S Spreading material

Claims (8)

A sparging material container (8) for storing the sprinkling material (S), a downwardly-opening horizontally long sprinkling cover (12) disposed below the sparging material container (8), and a vertical position in the sprinkling cover (12); A scatter wheel (59) rotating around an axis (58), and a scatter material drop port for allowing the scatter material (S) in the scatter material container (8) to fall naturally onto the scatter wheel (59) (37), wherein the scatter wheel (59) and the scattered material drop port (37) are biased to one of left and right from a center portion (C) in the left-right width direction of the scatter cover (12). The direction of rotation of the scattering impeller (59) is opposite to the direction of the left and right offset arrangement in the spraying cover (12) when viewed from above, and the spraying material drop port (37) ) Is the direction of rotation of the flying wheel (59) on the plane of rotation (P) of the flying wheel (59) when viewed from above. Identical left and right half and the scattering impeller is disposed above the second half surface of the rotation direction (59), spreaders. The sprinkling material container (8) is disposed in a right-left direction of the sprinkling cover (12) in accordance with a position where the scattering impeller (59) and the sprinkling material dropping port (37) are biased to the right or left. The spreader according to claim 1, wherein the sprayer is disposed so as to be deviated in the same direction to the left or right from a central portion (C) of the spreader. In the scatter cover (12), the scatter wheel (59) and the scatter material wheel (59) and the scatter material wheel (37) are located on the right and left opposite sides to the right and left opposite sides, respectively. 3. The reflective surface according to claim 1, further comprising a reflecting surface configured to reflect the scattered material protruding from the scattered impeller in a direction opposite to a position where the scattered wheel is biased. Sprinkler as described. The sprayer according to claim 3, wherein the reflection surface (67) is disposed at a central portion (C) in the left-right width direction of the spray cover (12). A sprinkling material feeding mechanism (9) of a natural fall type is provided between the sprinkling material container (8) and the sprinkling cover (12), and the sprinkling material feeding mechanism (9) includes the sprinkling material container (8). A spray material drop passage (36, 30) extending downwardly from the container; an obliquely downward spray material outlet (31) communicating with the spray material drop passage (36, 30) and the spray material drop port (37); 4. A swinging on-off valve (32) for opening and closing the spray material delivery port (31), and a drive source (33) for driving the on-off valve (32). Or the sprayer according to 4. A swing member (39) that swings integrally with the on-off valve (32); and an operating amount regulating member (a) that comes into contact with the swing member (39) and regulates an opening operation amount of the on-off valve (32). 49) The spraying machine according to claim 5, wherein the actuation amount regulating member (49) includes a spiral cam (50) centered on the rotating operation shaft (51). 7. A detachable spray width control surface (70) which is disposed inside the spray cover (12) and controls a spray width in the width direction of the spray cover (12). 8. Sprayer according to any one of the preceding claims. The spray width control surface (70) is formed on both front and back surfaces of the spray width control plate (69), and the mounting bracket (71) for attaching to the spray cover (12) is attached to the spray width control plate (69). The mounting bracket (71) is formed so as to rise from the width control surface (70), and can be attached to the scatter cover (12) by changing the front and back of the scatter width control plate (69). Sprayer according to any one of the preceding claims, wherein a receiving part (73) is formed.

Images