JPH10313762A - Chemical spraying device for rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize compactness and adjustment of a discharging amount at a flowable agent spraying machine arranged at the rear part of a transplanting transmission case at the transplanting part of a rice transplanter arranging plural transplanting transmission cases driving a transplanting pawl performing transplanting operation. SOLUTION: The lower part of a stay 11 is screwed to the rear parts of two right/left pairs of the transplanting transmission cases 47, the stay 11 is extended upward, a supporting frame 13 is horizontally provided at the upper tip part of the stay, a chemical tank 80 is arranged on the right of the frame 13, a chemical pump 70 is arranged on the left, the pump 70 is driven by way of a linking mechanism 60 consisting of plural rocking bodies 64 and 66 and rods 62, 65 and 68 connecting the bodies 64 and 66, plural holes 66a and 66b connecting the rods are opened at the body 66 and the connecting positions of the rods 62, 65 and 68 are adjusted from a base side to a tip side without stages at a connecting arm 69 rock-driving the pump 70 to change the discharging amount by the pump 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of a sprayer which is attached to a rice transplanter and sprays a chemical solution on a paddy field, and a structure for adjusting a spraying amount.

[0002]

2. Description of the Related Art Conventionally, it has been desired that a riding type rice transplanter be used for purposes other than rice transplanting. A fertilizer is mounted on a planting section, and the fertilizer is applied at the same time as the planting operation. , Improving work efficiency. In addition, a technique is also known in which a sprayer for spraying a liquid agent is mounted separately from the fertilizer applicator, and a spraying operation of the liquid agent is performed in parallel with the planting operation.
The sprayer is configured to suck the medicine in the tank using a piston pump and spray the medicine in a paddy field, and to transmit the medicine from the drive unit of the planting claw to the piston pump via a link mechanism.

[0003]

However, in the prior art, the piston pump for spraying the medicine increases or decreases the volume of the pump chamber by the reciprocating movement of the reciprocating member to suck and discharge the liquid medicine. It does not regulate the amount of reciprocation of the reciprocating member, and the variety of seedlings to be planted in rice fields,
Irrespective of the condition of the paddy field, it was configured to spray a certain amount of drug constantly. Therefore, there is a demand for a spraying machine that can adjust the spraying amount of the medicine according to the variety of seedlings and the condition of paddy fields. In addition, since it is necessary to mount a fertilizer in addition to the chemical sprayer on the planting part of the rice transplanter, the position where the sprayer is arranged is restricted, and the compact configuration is achieved. Sprayers have been desired.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in the planting portion of the rice transplanter in which a plurality of planting transmission cases for driving planting claws for performing planting work, the lower part of the stay is screwed into the rear of the two sets of planting transmission cases on the left and right sides. The stay extends rearward and upward, and a medicine sprayer is disposed at the upper end of the stay. Also, a stay is erected at the rear of the two sets of planting transmission cases, a support frame is laid horizontally above the stay, a medicine tank is arranged on the right side of the support frame, and a medicine sprayer is arranged on the left side, It is stored within the left and right width of the support frame. Also, a stay is erected at the rear of the two sets of planting transmission cases arranged on the center side in the left-right direction, a support frame is laid horizontally on the upper part of the stay, and a medicine sprayer is arranged on the support frame, and The discharge side of the tube to be transported is held in the tube holder as a nozzle, the tube holder is replaced with the left side position and the center position of the support frame according to the number of planting strips, and the chemical solution is placed at the left and right center position of the number of planting strips. Is dripping. In addition, a medicine sprayer including a medicine tank and a medicine pump is arranged above the rear part of the two sets of planting transmission cases, and the power in the planting transmission case is controlled by a plurality of oscillators and a rod connecting the oscillators. The drug pump is driven through a link mechanism composed of: opening several holes for connecting the rod to the rocking body, changing the connection position and adjusting the amount of movement of the rocking body in a stepwise manner, To change the discharge amount. A sliding pin is slidably provided on a connecting arm that swings and drives the medicine pump, and a sliding position of the sliding pin can be adjusted steplessly from a base side of the connecting arm to an end side of the connecting arm. A link mechanism is pivotally supported by the sliding pin to adjust the swing amount of the connecting arm.

[0005]

Next, examples will be described. FIG. 1 is a side view of a rice transplanter, FIG. 2 is a side cross-sectional view showing a lower part of a planting unit, FIG. 3 is a rear view of a planting unit provided with a drug sprayer of the present invention, and FIG. FIG. 5 is a side view showing a support structure of the machine, FIG.
FIG. 6 is a side view showing another embodiment of the support structure of the medicine sprayer,
FIG. 7 is a partial rear view showing a link mechanism for adjusting the discharge amount of the tube pump, FIG. 8 is a rear view of the tube pump, and FIG.
FIG. 2 is a side sectional view of the tube pump.

Referring to FIG. 1, the configuration of a riding rice transplanter will be described. FW is a front wheel, RW is a rear wheel, and an elevating link mechanism L consisting of a three-point link of a top link 55 and lower links 56 from the rear of the traveling vehicle body (the machine side) A.
It is configured to protrude. The rear ends of the top link 55 and the lower links 56 are integrally connected by a hitch 40. The mounting portion of the planting portion U is mounted on the hitch 40, and the planting portion U is driven up and down by driving a hydraulic cylinder C provided in the rear portion of the traveling vehicle body A. In addition to operating the lift lever 38, the float 3
9 Based on the detection of the planting depth sensor S1 arranged at the front,
The raising and lowering is automatically controlled to keep the planting depth of the planting section U constant.

The planting section U has a seedling mounting table 1 disposed at an upper portion thereof at an angle, and is mounted on a seedling mounting rail 44 so as to be slidable left and right. Power is input from the PTO shaft 41 at the rear of the running vehicle A to the input shaft 42 of the planting transmission case M via a universal joint. Further, the planting transmission case 4
7, a rotary case 4 having a planting claw 48
9 is pivotally supported. The rotary case 49 is rotated by the driving force from the planting transmission case 47 and the planting claws 48 are rotated.
Moves to a seedling opening that opens to the seedling stand rail 44, picks up a certain amount of seedlings, transports the seedlings downward, and plants them in a field.

Next, the structure of the transmission mission case 46 will be described with reference to FIG. In the planting transmission case 46, the input shaft 42 is transmitted to the transmission shaft 28 via a bevel gear, and the planting claw drive shaft (not shown) is driven by the transmission shaft 28 by chain transmission. Further, power is transmitted to the planting pawl transmission shaft 33 in the planting transmission case 47, the planting pawl drive shaft 35 is driven by a chain drive, the rotary case 49 is rotationally driven, and the planting pawl 48 is also driven. .

On the other hand, the power of the transmission shaft 28 is
5 and the vertical feed drive shaft 24, and the vertical feed cams 24a on the vertical feed shaft 24 come into contact with the cam 16 arranged at the lower part of the seedling mounting table 1, so that the vertical feed roller 45 It is driven intermittently. A groove for sliding a sliding element is formed in the lateral feed shaft 25, and a sliding element 23 is loosely fitted in the groove, and the sliding element 23 is connected to a connecting arm (not shown) protruding forward from the seedling mounting table 1. The horizontal feed shaft 25 is fitted and reciprocates left and right by rotation.

Next, a description will be given of the medicine spraying machine 10 disposed at the rear position of the seedling mounting table 1. The medicine spraying machine 10
As shown in FIG. 3 and FIG.
7, two right and left stays 11 are erected at a rear portion, a fixing plate 12 is screwed on an upper portion of the stay 11, and a support frame 13 is horizontally laid on a front portion of the fixing plate 12. The medicine spreader 10 is mounted on the support frame 13. As shown in FIG. 3, the stays 11 are erected on the centered two planting transmission cases 47 in the eight-row planting, and in the case of five-row planting or six-row planting, the traveling direction is Is erected on the central planting transmission case 47.

As shown in FIGS. 4 and 5, the lower portion of the stay 11 is formed in a triangular shape in a side view, and the boss portion 4 at the rear of the planting transmission case 47 formed of a half-split case.
7a and 47a, and a bolt is screwed from the side, and the lower portion of the stay 11 is screwed. The stay 11 protrudes obliquely upward and rearward, and a medicine sprayer 10 disposed above the stay 11 is disposed above the planting transmission case 47, between the rear surface of the seedling mounting table 1 and the medicine sprayer 10. A space is formed in
A seedling mat is supplied to the seedling mounting table 1 and the work of taking out the seedling mat is facilitated.

In this space, a fertilizer applicator 90 can be arranged as shown in FIG. The fertilizer applicator 90 is fixed to a stay 91 erected from the rear of the planting transmission case 47. When the fertilizer applicator 90 is provided, one side of the left and right sides supporting the chemical sprayer 10 (progress in this embodiment). Right side of the direction)
The lower part of the stay 11 ′ projects forward by bending the upper and lower middle part of the stay 11 ′ to be disposed on the lower part of the stay 11 ′, and a triangular support plate 18 is fixed to the lower part of the stay 11 ′.
It is also possible to use a stay 91 of the fertilizer applicator 90 by screwing it to the front of the stay 11 at an intermediate position of the stay 11 of the fertilizer applicator 90.

As shown in FIG. 4 and FIG. 5, two screw holes 11a are formed in the upper part of the stay 11 in the vertical direction. On the other hand, a hole is formed at the rear of the fixing plate 12 so as to coincide with the screw hole 11a. The hole on the fixing plate 12 side is aligned with one of the screw holes 11a on the stay 11 side. And fixing screw 1 from the side
4 and the fixing plate 12 is screwed. Therefore,
By adjusting the fixing position of the fixing plate 12 in two steps, the height of the support frame 13 provided in front of the fixing plate 12 changes, and the height of the medicine sprayer 10 changes.

The medicine spraying machine 10 disposed on the support frame 13 includes a pivot plate 15 for pivotally supporting a second rocking body 66 of a link mechanism 60 to be described later from the left, a tube pump 70 as a medicine pump, and a medicine pump. A tank 80 is provided. The medicine tank 80 is inserted into a box-shaped case 81 covering the lower part of the tank. Case 8
1 is an inclined plate 8 fixed to the right side of the support frame 13
2, a front surface of the case 81 is fixed, and a medicine tank 80 housed in the case 81 is arranged at a front low position and a high position. In addition, the second oscillator 66 and the tube pump 70 are
You are being dressed by

Next, the link mechanism 60 for transmitting power to the tube pump 70 will be described. As shown in FIGS. 4 and 5, the link mechanism 60 is composed of a plurality of rockers and rods, and one end of the link mechanism 60 is located in the rear part of the planting transmission case 47 to which the left stay 11 is fixed. Has been inserted. A planting claw drive shaft 35 for driving a rotary case 49 is pivotally supported at an intermediate position in the front and rear of the planting transmission case 47. It is transmitted to the shaft 61. An arm 54 is fixed to the power take-off shaft 61, and a first rod 62 is pivotally supported at an end of the arm 54. The upper end of the first rod 62 extends to the vertical center position of the left stay 11. A pin 63 protrudes inside (right side) the center position of the stay 11 on the left side, and a first rocking body 64 is pivotally supported by the pin 63. A first rod 6 is attached to one end of the first rocking body 64.
(2) The upper end is pivotally supported, the lower end of the second rod 65 is pivotally supported at the other end of the first rocking body 64, the upper end of the second rod 65 is inserted into the cover 17, and is connected to the above-mentioned second rocking body 66. Have been. The lower end of the second rod 65 is connected to the first rocking body 6.
4 is connected to both the right side surface and the left side surface.

As shown in FIGS. 4 and 7, the second swinging body 66 has a pivot pin 67 projecting forward from the pivot plate 15, and the left and right sides of the second swinging body 66 are moved by the pivot pin 67. The central portion is pivotally supported, and is pivotably supported in the left-right direction. The left end of the second rocking body 66 protrudes to the left from the pivot plate 15, and the left side of the second rocking body 66 has two connecting holes 66a and 66b. Therefore, the upper end of the second rod 65 is connected to the outer connection hole 66 a distant from the pivot pin 67, and the lower end of the second rod 65 is connected to the left side surface of the first rocking body 64. The momentum is reduced. Conversely, by connecting the lower end of the second rod 65 to the right side surface of the first rocking body 64 and connecting the upper end of the second rod 65 to the inner connection hole 66b near the pivot pin 67, the second rocking body 66 The left and right swing amounts are increased.

Further, the other end of the second rocking body 66 projects upward, the left end of the third rod 68 is connected, and the right end of the third rod 68 is pivotally supported by an interlock arm 69 for driving a tube pump 70. The timing at which the medicine is pumped is interlocked with the drive of the planting claws 48.

As shown in FIG. 7, the interlocking arm 69 has an elongated hole 69a in the longitudinal direction of the arm. A sliding pin 59 is loosely fitted in the elongated hole 69a, and one end of the sliding pin 59 is connected to the right end of the third rod 68. Further, on the front surface of the interlocking arm 69,
The screw shaft 58 is pivotally supported along the long hole 69a.
The upper end of the screw shaft 58 protrudes upward from the upper part of the interlocking arm 69, and the metering dial 57 is fixed to the upper end. A screw body 57 is screwed onto the outer peripheral surface of the screw shaft 58, and the sliding pin 59 is fixed to the screw body 57.

Thus, when the metering dial 57 is rotated, the screw body 57 is moved up and down on the screw shaft 58,
The sliding pin 59 slides in the elongated hole 69a along with the screw body 57, and the position of the third rod 68 connected to the sliding pin 59 changes, so that the base of the interlocking arm 69 and the third rod 6
8, the swing amount of the interlocking arm 69 is adjusted, and the drive shaft 71 of the tube pump 70 described later is adjusted.
Is adjusted.

In the tube pump 70, a support plate 16 is erected at the center of the support frame 13 on the left and right sides.
A tube pump 70 is fixed on the support plate 16. As shown in FIGS. 8 and 9, the tube pump 70 has a drive shaft 71 pivotally supported in the front-rear direction (the left-right direction on the paper surface in FIG. 9). A contact roller 73 is fixedly mounted on both ends of the rotating arm 72.
・ 73 is pivoted. In addition, the tube pump 7
0, a tube 74 is disposed in a U-shape, and a semicircular portion of the U-shaped tube 74 is disposed on the rotation locus of the contact roller 73, and one end of the tube 74 (suction side).
Is inserted into the medicine tank 80, the other end (discharge side) of the tube 74 is held by a tube holder 85 described later, and the end of the tube 74 is used as a nozzle 74a.

Therefore, when the drive shaft 71 rotates, the contact rollers 73 rotate, and the inner rollers of the tube 74 are crushed by the contact rollers 73. The chemical solution in the tube 74 between the contact roller 73 and the contact roller 73 on the side preceding the contact roller 73 (the lower side in FIG. 8), that is, the semi-circular portion of the tube 74 held in a U-shape. Pressure is being applied. This tube 7
When the drive shaft 71 is further rotated in a state where pressure is applied to the chemical solution in 4, the leading contact roller 73 is separated from the tube 74, and the pressure-applied chemical solution is pressure-fed to the discharge side,
The liquid can be instantaneously dropped from the nozzle 74a as a group of chemicals, and by continuously driving the drive shaft 71,
A tube pump 70 for intermittently dropping a chemical solution from the nozzle 74a is configured.

The discharge end of the tube 74 is
The end of the tube 74 is held as a nozzle 74a by the tube holder 85. As shown in FIGS. 4 and 5, the tube holder 85 has a gate shape as viewed from the side, and a tube 74 is held at the center in the front-rear direction. The tube holder 85 is sandwiched between the front surface of the support frame 13 and the lower part of the front surface of the cover 17, and the front surface of the tube holder 85 is screwed by a fixing screw 53 provided at the lower part of the front surface of the cover 17. The position of the tube holder 85 is either a center position of the support frame 13 between the medicine tank 80 and the tube pump 70 or a left position on the left side of the position of the pivot plate 15 on the front surface of the support frame 13. Or one of them has been replaced. Therefore, in the case of the four-row planting or the eight-row planting, the tube holder 85 is arranged at the center position, so that the nozzles 74a are arranged at the left and right center positions of each line. In the case of five-row planting, the nozzle 74a can be placed at the left and right central position of each strip by arranging the tube holder 85 at the left position. Therefore, even in rice transplanters having different numbers of planting lines, the nozzles 74a are disposed at the left and right central positions, and the chemical solution can be intermittently dropped from the central position. The chemical solution can be evenly applied.

[0023]

As described above, the present invention has the following advantages. That is, the stay is in contact with the boss portion forming the planting transmission case, the stay is fixed integrally with the case using a bolt, and the lower end of the stay extending upward and rearward is screwed, Since there is no need to provide a special support member, an inexpensive configuration can be achieved. In addition, a drug sprayer is arranged on the upper part of the stay that projects rearward and upward from the rear of the planting transmission case, a space is formed between the rear surface of the seedling mounting table and the drug sprayer, and the seedling mat is supplied with seedling mats It is configured so that the work of removing the seedling mat and the work of removing the seedling mat can be easily performed. A fertilizer can be arranged using this space, and a multifunctional rice transplanter can be configured.

According to the second aspect of the present invention, a stay is erected on two sets of right and left planting transmission cases, a support frame is laid horizontally on the upper portion of the stay, and the medicine sprayer is disposed within the width of the support frame. A medicine tank is arranged above the pump, and the height of the medicine sprayer is not increased, so that the medicine sprayer has a compact structure, and the work of replacing a seedling mat placed on the seedling mounting table is performed from the rear of the machine. In such cases, work is not interrupted.

According to a third aspect of the present invention, in a planting portion of a rice transplanter in which a plurality of planting transmission cases are provided, a stay is provided at a rear portion of two sets of planting transmission cases arranged at the center in the left-right direction. The medicine spraying machine is fixed to the support frame that is erected on the top of the stay, and the tube holder that holds the end of the tube that discharges the medicine is replaced by the left side position and the center position of the support frame for planting. Even in rice transplanters with different numbers of rows, the tube holders are arranged at the left and right central positions, so that they are dropped at the left and right central positions of the planting strips. The medicine can be evenly sprayed in the inside.

According to a fourth aspect of the present invention, the link mechanism for driving the medicine pump of the medicine sprayer is constituted by a plurality of oscillators and a rod connecting the oscillators, and the rod is connected to the oscillator. By opening several holes, changing the connection position and adjusting the amount of movement of the oscillating body stepwise, and enabling the discharge amount by the chemical pump to be changed, the switching of the spray amount can be changed, for example, per 10 ares. 500ml specification and 10
It is easy to switch to a specification of 1000 milliliters per are, and it is easy to correspond to the variety of seedlings.

According to a fifth aspect of the present invention, a sliding pin is slidably provided on a connecting arm for swingingly driving the drug pump, a link mechanism is connected to the sliding pin, and sliding of the sliding pin is performed. The position can be adjusted steplessly from the base side of the connecting arm to the end side of the connecting arm, the swing amount of the connecting arm can be changed, and the discharge amount by the chemical pump can be set to an optimum amount according to the field.

[Brief description of the drawings]

FIG. 1 is a side view of a rice transplanter.

FIG. 2 is a side sectional view showing a lower part of a planting portion.

FIG. 3 is a rear view of a planting section provided with the medicine sprayer of the present invention.

FIG. 4 is a side view showing a support structure of the medicine sprayer of the present invention.

FIG. 5 is a rear view showing the support structure of the medicine sprayer.

FIG. 6 is a side view showing another embodiment of the support structure of the medicine sprayer.

FIG. 7 is a partial rear view showing a link mechanism for adjusting the discharge amount of the tube pump.

FIG. 8 is a rear view of the tube pump.

FIG. 9 is a side sectional view of the tube pump.

[Explanation of symbols]

 U Planting part 10 Drug sprayer 11 Stay 13 Support frame 47 Planting transmission case 60 Link mechanism 62 ・ 65 ・ 68 Rod 64 ・ 66 Oscillator 70 Drug pump 74 Tube 80 Drug tank 85 Tube holder

Claims (5)

[Claims] 1. A planting portion of a rice transplanter having a plurality of planting transmission cases for driving planting claws, wherein a lower portion of a stay is screwed to a rear portion of two sets of the planting transmission cases on the left and right sides. , And a drug sprayer is arranged at the upper end of the stay. 2. A planting part of a rice transplanter in which a plurality of planting transmission cases for driving planting claws for carrying out planting work are provided with upright stays at rear portions of two sets of right and left planting transmission cases. A support frame is provided horizontally on the upper portion of the stay, a medicine tank is arranged on the right side of the support frame, a medicine pump is arranged on the left side, and the medicine is spread within the left and right widths of the support frame. Machine. 3. A planting section of a rice transplanter in which a plurality of planting transmission cases for driving planting claws for planting work are arranged.
A stay is erected at the rear of the two sets of planting transmission cases arranged at the center in the left-right direction, a support frame is laid horizontally on the upper portion of the stay, a medicine sprayer is arranged on the support frame, and the medicine is transported. The discharge side of the tube was held as a nozzle in a tube holder, the tube holder was replaced with the left side position and the center position of the support frame in accordance with the number of planting strips, and the drug solution was dropped on the left and right central positions of the number of planting strips. A rice sprayer chemical sprayer, characterized in that: 4. A plurality of planting transmission cases for driving planting claws for carrying out planting work in a planting section of a rice transplanter, and two sets of planting transmission cases are provided above a rear part of the planting transmission case by a medicine tank and a medicine pump. , The power in the planting transmission case,
A medicine pump is driven through a link mechanism including a plurality of oscillators and a rod connecting the oscillators, and the connecting position between the oscillator and the rod is changed to adjust the amount of oscillation of the oscillator in a stepwise manner. A medicine spraying machine for a rice transplanter, characterized in that the discharge amount of the medicine pump can be changed. 5. A plurality of planting transmission cases for driving planting claws for carrying out planting work in a planting section of a rice transplanter, and two sets of planting transmission cases are provided above a rear portion of the planting transmission case by a medicine tank and a medicine pump. And a sliding pin is slidably disposed on a connecting arm that swings and drives the drug pump, and the sliding position of the sliding pin is set from the base of the connecting arm to the end of the connecting arm. Adjustable in stages, pivoting a link mechanism to the sliding pin,
A chemical sprayer for a rice transplanter, characterized in that the swing amount of a connecting arm is adjusted.