JP3245457B2 - Drug spraying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical spraying device which is mounted on a paddy working machine such as a riding type rice transplanter or a riding type direct sowing machine and sprays a chemical such as an insecticide or a herbicide on a rice field.

[0002]

2. Description of the Related Art An example of the above-mentioned medicine spraying apparatus is disclosed in Japanese Patent Application Laid-Open No. 2-290278. This medicine spraying device includes a hopper for storing medicine, a feeding mechanism for feeding a predetermined amount of medicine from the hopper, and a rotating body for repelling and spraying the fed medicine, and one end side is pushed and pulled by a driving unit. The other end of the wire is connected to a drive arm as an operated part, and a stopper for contacting and stopping the drive arm and a return spring for urging the drive arm toward the stopper are provided. The drive arm is configured to reciprocate over a position contacting the stopper and a position distant from the stopper by a spring, and includes a one-way clutch that transmits one operation in the reciprocation of the drive arm to the feeding mechanism. The feed mechanism is configured to be intermittently driven in a predetermined direction by the drive unit, and the position of the stopper is adjusted by moving the drive arm forward and backward. The drive arm is provided with a position change portion that can be changed along the movement direction, and the stroke of the reciprocating movement of the drive arm is configured to be changeable. The amount of medicine sprayed per unit area can be adjusted by adjusting the stroke of the drive arm. It has become.

[0003]

In the above-mentioned medicine spraying device, the amount of pushing and pulling of the wire in the driving section is constant, the operating position of the drive arm when the wire is pulled is constant, and the wire is slackened. Since the position at which the drive arm is biased and returned by the return spring is regulated by the stopper, the smaller the stroke of the drive arm, the smaller the stroke of the wire when the drive arm contacts the stopper. The amount of slack increases. Therefore, as the wire is repeatedly pushed and pulled, the wire is repeatedly slackened or stretched, whereby the stranded wire of the wire is loosened or the wire is twisted to cause kink. And possibly the wire could be damaged early.

The present invention has been made in view of such a point. Even if the wire is repeatedly pushed and pulled, the stranded wire of the wire may be loosened or the wire may be twisted. It is another object of the present invention to provide a medicine spraying device which can enhance the durability of a driving wire and can be operated suitably for a long time.

[0005]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

The invention according to claim 1 comprises a hopper for storing a medicine, a delivery mechanism for delivering a predetermined amount of medicine from the hopper, and a rotating body for repelling and spraying the delivered medicine. A stopper for interlockingly connecting the other end of the wire whose one end is pushed and pulled to the operated portion, and abutting against the operated portion to regulate the return position;
A return spring for urging and returning the operated portion to the stopper side, wherein the operated portion is brought into contact with the stopper by the wire and the return spring over a position separated from the stopper. A one-way clutch configured to reciprocate and transmit one operation in the reciprocating movement of the operated portion to the feeding mechanism, such that the driving mechanism drives the feeding mechanism intermittently in a predetermined direction. And a position changing portion that can change the position of the stopper along the reciprocating direction of the operated portion, and the stroke of the operated portion reciprocating can be changed. Wherein the contact portion provided on the other end side of the wire is one-sidedly linked to the operated portion, and the other end side of the wire is connected to the operated portion. A wire tension spring that pulls in the direction away from the wire is provided, and one end of the wire is pulled by the driving unit, so that the other end of the wire moves against the wire tension spring, and the operated part is moved to the return spring. Characterized in that it is configured to be abutted and moved against

According to the above configuration, as the stroke of the operated portion becomes smaller, the margin of the wire becomes larger. However, since the wire is always pulled from the other end side by the wire tension spring, the operated portion becomes the stopper. The margin generated at the time of receiving and supporting is drawn toward the other end of the wire, and the wire is maintained in a state without slack regardless of the stroke of the operated portion.

Therefore, according to the medicine spraying device of the first aspect of the present invention, even if the wire is repeatedly pushed and pulled,
The twisted wire of the wire is not loosened and the wire is not twisted, so that the durability of the driving wire can be improved and the driving wire can be suitably operated for a long time.

[Structure, operation and effect of the invention according to claim 2]

According to a second aspect of the present invention, in the first aspect of the present invention, the contact portion is provided at the other end of the inner wire of the wire, and the operation portion is allowed to insert and pass the inner wire. Thus, a notch is formed to prevent the insertion movement of the contact portion.

According to the above-described structure, in order to link the operated portion and the wire, the end fitting of the inner wire is connected to the operated portion using a pin or the like, and the pin is prevented from coming off. No operation is required, and the inner wire simply needs to be engaged and inserted into the notch formed in the operated portion, and the operated portion and the wire can be linked without requiring a special tool. Conversely, it is also easy to detach the wire from the operated portion for wire replacement or the like.

Therefore, according to the medicine spraying apparatus of the first aspect of the present invention, the above-mentioned effect of the first aspect of the present invention is provided, and at the same time, the assembling workability and the maintainability are excellent, and the practical convenience is high. Become.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, one horizontally long support frame 8 is fixed to the lower portion of the planting mission case 1, and three sets of planting transmission cases 15 are fixed to the supporting frame 8. 1 is transmitted to the planting transmission case 15 by the transmission shaft 10. A pair of rotation-driven planting cases 3 having a pair of planting arms 2 is supported at the rear end of the planting transmission case 15 in a pair on the left and right sides. Case 15
Is provided with a float 5 at the lower part of the vehicle to constitute a six-row type seedling planting device of a riding type rice transplanter.

The fertilizing device 20 is connected to and supported by the seedling planting device. Next, the fertilizing device 20 will be described. As shown in FIG. 1, a pair of grooving plates 6 are fixed to the left and right of the float 5, and a groove forming device 7 is fixed to the grooving plate 6. The groove generator 7 is formed by bending a flat plate into a U-shaped cross section.
A trench is dug in the rice field as the riding type rice transplanter advances.

The frame 1 extended from the support frame 8
6, three sets of hoppers 13 for storing fertilizer and six sets of feeding parts 14 are connected and supported, and one set of hoppers 13 is connected with two sets of feeding parts 14. Is connected to a pipe 11. A common drive shaft 22 is provided on the feeding portion 14, and the drive shaft 22
The connecting rod 18 is connected to the planting case 3.

According to the above-mentioned structure, the ditch generator 7 digs a ditch beside the seedling as the seedling is planted by the planting arm 2.
The rotational power of the planting case 3 is converted into a push-pull power by the linkage rod 18 and transmitted to the drive shaft 22, and the fertilizer coming out of the feeding part 14 is fed into the dug groove of the groove generator 7.

A chemical spraying device 30 is connected to and supported by the seedling planting device. Next, the chemical spraying device 30 will be described.
As shown in FIG. 1 and FIG.
A skirt-shaped main body 12 is connected to and supported by a frame 9 extending from the main body 12, a feed-out portion 17 is fixed to an upper portion of the main body 12, and a hopper 21 and a hopper 21 for storing a medicine.
Is provided, and the medicine spraying device 30 is provided.
Is configured.

Next, the support 19 of the medicine spraying device 30 will be described. As shown in FIGS. 5 and 6, a hopper 21 is supported at the upper center of the box-shaped support portion 19, and the funnel-shaped first supply port 23 through which the medicine in the hopper 21 is divided into two directions and comes out. The second supply port 24 is provided in the support portion 19. A plate-like shutter 25 is supported slidably under the first and second supply ports 23 and 24. The shutter 25 has first and second supply ports 23,
24 are provided with openings 25a and 25b corresponding to
The spring 25 biases the shutter 25 to the left in FIG. An operation arm 26 is swingably supported around a horizontal axis P1 of a fixed portion of the support portion 19, and an arm portion 26a of the operation arm 26 has an aperture 25c of a shutter 25.
Has been inserted.

The support portion 19 is configured to be detachable from the feeding portion 17, and the state shown in FIG. 4 is a state in which the supporting portion 19 is attached to the feeding portion 17. In this state, the roller 26b of the operation arm 26 is mounted on the feeding portion 17 and is pushed upward, and in this state, the apertures 25a, 25 of the shutter 25 are opened.
5b is located immediately below the first and second supply ports 23, 24.

The state shown in FIG. 4 is a normal operation state. When the support portion 19 is removed from this state and the roller 26 b of the operation arm 26 is separated from the upper surface of the feeding portion 17, the shutter is biased by the spring 27. The first supply port 23 and the second supply port 24 are closed by the shutter 25 by sliding operation of the reference numeral 25 to the left in the drawing. Thereby, even if the support portion 19 is removed from the feeding portion 17 in a state where the medicine remains in the hopper 21, the first and second supply ports 23,
No drug spills from 24.

Next, the feeding portion 17 of the medicine spraying device 30
Will be described. As shown in FIGS. 3, 4, 7, and 8, a first supply path 28 and a second supply path 29 in the form of a pipe are arranged in the feeding section 17, and the first and second supply paths 28 and 2 are provided.
9, a perforated plate 31 having a plurality of openings 31 a on the upper surface, a shutter 32 having a pair of long holes 32 a and 32 b, and a fixing plate 33 having a pair of openings 33 a and 33 b are arranged. . A motor 34 is disposed between the first and second supply paths 28 and 29, and a disk-shaped rotating plate 35 is fixed to a downward shaft of the motor 34. As shown in FIG. 10, the rotating plate 35 is provided with a pair of upward fins 35a and a plurality of small holes 35b.

With the above structure, as shown in FIG. 8, the medicine coming out of the first and second supply ports 23, 24 of the support portion 19 is supplied to the openings 33a, 33b of the fixing plate 33 and the long holes of the shutter 32. 32a, 32b, the opening 3 of the perforated plate 31
Enter 1a. In this case, the perforated plate 31 is intermittently driven to rotate in the counterclockwise direction in FIG. 8, and a predetermined amount of the drug that has entered the opening 31 a is carried by the perforated plate 31 at an angle of about 90 degrees. It is sent to the upper ends of the first and second supply paths 28 and 29. Next, the medicine is supplied to the first and second supply paths 28 and 29.
, Falls on a rotating plate 35 that is driven to rotate by a motor 34, is repelled by the fins 35 a of the rotating plate 31 into the main body 12 shown in FIGS.
Falls on the rice field.

As described above, a sufficient amount of the medicine which enters the opening 31a by the rotation of the perforated plate 31 is sequentially taken out from the first and second supply ports 23 and 24 and the first and second supply paths 2 are provided.
8 and 29, are repelled into the main body 12 by the rotating plate 31 and are scattered on the rice field.

In this case, as shown in FIG. 3, an inclined surface 12b facing obliquely downward and rearward is provided on the front side of the main body 12 (on the side of the seedling planting device).
d, and the front and rear inclined surfaces 12b and 12d are set symmetrically in a side view shown in FIG. Front and rear inclined surfaces 12
b, 12d, a pair of vertical surfaces 12c, 12
e.

With the above structure, the medicine is sufficiently diffused in the left-right direction in the main body 12 by the rotating plate 35, and the front and rear inclined surfaces 12b, 12d as the medicine falls in the main body 12. Thereby, the diffused medicine is compressed in the front-back direction. In this manner, the medicine sufficiently diffused in the left-right direction and compressed in the front-rear direction passes between the front and rear vertical surfaces 12c and 12e as it is, and falls from the outlet 12a to the rice field surface.

Next, the feeding section 17 of the medicine spraying device 30
In the following, the structure of the rotation drive of the perforated plate 31 will be described. As shown in FIG. 1, a pair of vertically swingable operation arms 38 is provided on the left and right sides of the main body 12, and a pair of right and left swing links 40 are connected to the operation arm 38.
A pair of linking rods 41 are connected to extend over the right and left planting cases 3 and the swing link 40.

As shown in FIGS. 3, 4, and 7, a pair of upper and lower one-way clutches 37 is fitted on the drive shaft 36 to which the perforated plate 31 is fixed. An arm 37a as an operated portion extends from the one-way clutch 37, and a notch 37b opened upward is provided at the end of the arm 37a, and a large-diameter connection portion fixed to the inner wire 39a is provided. The notch 37 is moved from the upper side
b, and a wire tension spring 42 for pulling the inner wire 39a in a direction away from the arm 37a is connected to the contact portion 39b. Further, a return spring 43 for urging and swinging the arm 37a of the one-way clutch 37 clockwise in FIG. 7 is provided, and the other end of the inner wire 39a of the pair of wires 39 is connected to the left and right as shown in FIG. It is connected to the operation arm 38.

With the above structure, the planting case 3 is driven to rotate, and the left and right operation arms 38 are driven to swing up and down.
When the inner wire 39a of the wire 39 is pulled downward in FIG. 7, the contact portion 39b of the inner wire 39a contacts the arm 37a from the rear side, and the arm 37a is turned counterclockwise in FIG. Forcibly rock. The swing of the arm 37a causes the one-way clutch 37 to rotate the drive shaft 36 and the perforated plate 31 by a predetermined angle in the direction of the arrow in FIG. When the inner wire 39a of the wire 39 is loosened with the rotation of the planting case 3, the arm 37a of the one-way clutch 37 is returned and oscillated clockwise in FIG.
The inner wire 39 is urged by the urging force of the wire tension spring 42.
a is pulled upward in FIG. 7 and returned to the posture shown in FIG.
As described above, by pushing and pulling the inner wire 39a of the wire 39, the perforated plate 31 is intermittently driven to rotate counterclockwise in FIG.

In this case, as shown in FIGS. 3 and 7, the inner wire 39a of the wire 39 is not completely fixed to the arm 37a of the one-way clutch 37, but a large-diameter contact portion 39b provided on the inner 39a. Into the notch 37b of the arm 37a. Thereby, in the case of disassembling the dispensing portion 17 by removing it,
Simply pulling out the contact portion 39b of the inner wire 39a of the wire 39 upward from the notch portion 37b of the arm 37a,
The wire 39 can be easily removed.

As shown in FIGS. 3 and 7, an L-shaped stopper 44 is provided which comes into contact with the arm 37a of the one-way clutch 37 and stops the arm 37a at the position shown in FIG. By performing the moving operation, the position of the stopper 44 can be changed and adjusted in the vertical direction on the paper of FIG. The state shown in FIG. 7 is a state in which the stopper 44 is positioned at the uppermost position on the paper, and
In this state, the stroke for operating the arm 37a by the pulling operation of the inner wire 39a is maximized.

As described above, when the position of the arm 37a of the one-way clutch 37 shown in FIG.
Since a gap is formed between the contact portion 39b of the arm 9a and the tip of the arm 37a, the stroke for operating the arm 37a can be reduced. As described above, by changing the stroke of the arm 37a of the one-way clutch 37, the rotation speed of the perforated plate 31, that is, the amount of the drug fed to the first and second supply paths 28 and 29 per unit time is changed. It is possible to change and adjust the amount of the medicine to be sprayed on the rice field.

Next, the feeding portion 17 of the medicine spraying device 30
In the following, the structure of the perforated plate 31 will be described.

As shown in FIG. 8, the first and second supply paths 2
8, 29 are arranged symmetrically with respect to the drive shaft 36. An odd number of openings 31a of the perforated plate 31 are provided at a predetermined pitch. Therefore, as shown in FIG. 11, when the first and second supply passages 28 and 29 and the perforated plate 31 are overlapped, an opening 31a of the perforated plate 31 is formed in one of the first and second supply passages 28 and 29. When the perforated plate 31 is driven to rotate, the opening 31a of the perforated plate 31 is moved to the first position.
In this state, the medicine is alternately fed into the second supply paths 28 and 29 instead of simultaneously.

As shown in FIG. 12, since the rotating plate 35 is driven to rotate counterclockwise in the drawing, the medicine from the first supply path 28 is repelled to the right half in the main body 12 and the second supply path 29 From the body 12 is repelled to the left half in the main body 12. Therefore, as described above, the first and second supply paths 28, 2
9, when the medicine is alternately fed, the hatched portions A and A in FIG.
As shown in B, the medicine is sprayed alternately on the right and left halves of the left and right ranges of the main body 12 as the body advances.

Next, the feeding section 17 of the medicine spraying device 30
Now, the shutter 32 will be described. As shown in FIGS. 3 and 8, the first and second supply ports 2 of the support portion 19 are provided.
A disk-shaped fixing plate 33 and a shutter 32 are arranged between the plates 3 and 24 and the perforated plate 31 of the feeding portion 17. The fixing plate 33 is provided with a pair of openings 33 a and 33 b at the same position as the first and second supply ports 23 and 24 of the support portion 19.
32b is provided.

When the shutter 32 is operated to the position shown in FIG. 9A with the above structure, both slots 32a, 32b of the shutter 32 are located at the positions of both openings 33a, 33b of the fixed plate 33. Is located. Thereby, the support portion 1
9, the medicine is supplied to the perforated plate 31 from the first and second supply ports 23 and 24, and as shown in FIG. The medicine is sprayed alternately on the parts A and B.

When the shutter 32 is rotated to the position shown in FIG. 9B, one opening 33a of the fixed plate 33 is closed by the shutter 32, and the other opening 33 of the fixed plate 33 is opened.
b is not blocked. As a result, only the medicine from the second supply port 24 of the support portion 19 is supplied to the perforated plate 31, and the medicine is fed from the perforated plate 31 to only the second supply path 29 of the feeding portion 17, and as shown in FIG. As shown in the figure, the medicine is sprayed at a predetermined interval only in the left half hatched portion B in the left and right range of the main body 12 as the body advances.

Conversely, when the shutter 32 is rotated to the position shown in FIG.
Is closed by the shutter 32, and the other opening 33a of the fixing plate 33 is not closed. Thereby, only the medicine from the first supply port 23 of the support portion 19 is supplied to the perforated plate 31, and the first supply path 2 of the feeding portion 17 is supplied from the perforated plate 31.
8, the medicine is sent to only the right half of the main body 12 as shown in FIG.
Only at this time, the medicine is sprayed at predetermined intervals.

When the shutter 32 is rotated to the position shown in FIG. 9D, both the openings 33a, 33
b is closed by the shutter 32. Thereby, the perforated plate 31 can be moved from the first and second supply ports 23 and 24 of the support portion 19.
Is not supplied at all, and the spraying of the medicine is not performed. In this way, even when the medicine remains in the hopper 21, it is possible to perform adjustment of each part while performing the idle operation of the seedling planting apparatus and the medicine spraying apparatus 30.

[Another Embodiment] In the structure shown in FIG. 3, the front and rear sides of the main body 12 are symmetrically provided with the inclined surfaces 12b and 12d, but the front and rear inclined surfaces 12b and 12d are asymmetrically arranged. You may comprise. The rear side may be formed as a vertical surface with the inclined surface 12b provided only on the front side, or the front surface may be formed as the vertical surface with the inclined surface 12d provided only on the rear side.

Incidentally, reference numerals are written in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[Brief description of the drawings]

FIG. 1 is an overall side view of a seedling planting device, a fertilizer application device, and a chemical spraying device.

FIG. 2 is an overall rear view of the medicine spraying device.

FIG. 3 is a longitudinal sectional side view of a support portion, a feeding portion, and a main body of the medicine spraying device.

FIG. 4 is a longitudinal rear view of a support portion and a feed-out portion of the medicine spraying device.

FIG. 5 is a longitudinal rear view of a support portion of the medicine spraying device.

FIG. 6 is a bottom view of the support portion of the medicine spraying apparatus as viewed from below.

FIG. 7 is a cross-sectional plan view of a feeding portion of the medicine spraying device.

FIG. 8 is an exploded perspective view of a shutter, a perforated plate, and the like of a feeding portion in the medicine spraying device.

FIG. 9 is a plan view showing a state in which the shutter of the feeding unit in the medicine spraying device is operated at each position.

FIG. 10 is a perspective view of a rotating plate of a feeding unit in the medicine spraying device.

FIG. 11 is a plan view of a perforated plate of a feeding portion in the medicine spraying device.

FIG. 12 is a plan view showing a spraying state of the medicine in the medicine spraying apparatus.

[Explanation of symbols]

 3 Drive Unit 21 Hopper 31 Feeding Mechanism 35 Rotating Body 37 One-Way Clutch 37a Operated Part (Arm) 39 Wire 39a Inner Wire 39b Contact Part 42 Wire Tension Spring 43 Return Spring 44 Stopper 45 Position Change Part

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Tanimoto 639, Yamate, Yoshida-cho, Takada-gun, Hiroshima Prefecture Inside Keibunsha Mfg. Co., Ltd. (72) Tadao Wakuda 64, Ishizukita-cho, Sakai City, Osaka Prefecture Inside Sakai Works (72) Inventor Yasuya Nakao 64 Ishizu-Kitacho, Sakai City, Osaka Kubota Sakai Works (56) References JP-A-2-290278 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) A01M 9/00

Claims (2)

(57) [Claims] 1. A hopper (21) for storing a medicine,
Feeding out a predetermined amount of medicine from the hopper (21)
Mechanism (31), which scatters the dispensed medicine by repelling it.
A rotating body (35) for fabricing, and a driving unit (3)
The other end of the wire (39) whose one end is pushed and pulled
The operating part (37a) is linked and connected to the operated part (37a).
Stopper (44) that abuts on a) to regulate the return position
And the operated part (37a) is connected to the stopper (44).
And a return spring (43) for urging and returning to the side.
Operated by the wire (39) and the spring (43)
The position at which the portion (37a) contacts the stopper (44)
And a position away from the stopper (44)
It is configured to reciprocate, and the operated portion (37a)
One operation in the reciprocating movement is performed by the feeding mechanism (3).
Equipped with a one-way clutch (37) for transmitting to 1),
The feed mechanism (31) is located by the drive section (3).
It is configured to be driven intermittently in a fixed direction and
The position of the stopper (44) is adjusted by the operated part (37a).
Position change part (45) that can be changed along the direction of reciprocating movement of
A stroke in which the operated portion (37a) reciprocates.
A medicine spraying device that is configured to change the stroke freely.
And a contact portion (39b) provided at the other end of the wire (39).
Is linked to the operated part (37a) in a one-shot manner.
The other end of the wire (39) is connected to the operated portion (3).
7a) A wire tension spring (4) for pulling away from
2), one end of the wire (39) is connected to the drive section (3).
Therefore, when the pulling operation is performed, the other end side of the wire (39) is
Moves against the wire tension spring (42),
The working part (37a) is opposed to the wire tension spring (43).
A medicine spraying device characterized by being configured to be abutted and moved . 2. The contact portion (39b) is connected to the wire
At the other end of the inner wire (39a) in (39)
And the in-operated part (37a)
The abutment portion by allowing the insertion and insertion of the knurling wire (39a).
Notch (37b) that prevents insertion movement of (39b)
drug scatterplot apparatus according to claim 1, wherein is formed a b).