JP2548982B2 - Pest control equipment for paddy field vehicles - Google Patents

Description

TECHNICAL FIELD The present invention is capable of disinfecting and controlling ridge crops by detachably attaching a pest control machine to the main body of a paddy field work vehicle such as a riding rice transplanter or a submerged soil direct sowing machine. The present invention relates to a pest control device for a paddy field vehicle.

Conventional technology and problems to be solved Although a tractor-pulling type and a dedicated control machine are known as self-propelled control machines, this machine is used for paddy field work vehicles such as riding rice transplanters and submerged soil direct seeders. No control device is provided. A conventional paddy field vehicle such as a passenger rice transplanter has a planting part etc. which is detachably and vertically movable via a parallel link to a traveling machine body (this machine) for planting and sowing work in paddy fields. Since it is a paddy field dedicated machine such as rice planting, so long as it is an expensive machine, the annual operating time is limited to only the rice planting (seeding) period, which makes it difficult to reduce production costs. It is one of the reasons why. However, there is a problem in terms of lifting force and strength of the parallel links when the crop control work is performed by connecting a control machine having a heavy chemical tank to the main body of a paddy field work vehicle such as a passenger rice transplanter.

Means for Solving the Problems Therefore, the present invention has solved the above-mentioned problems by being configured as follows.

That is, the parallel link 7 having the hitch H at the rear of the machine 1.
In the paddy work vehicle in which the working machine M is detachably mounted via the hitch, the pest control machine S is attached to the parallel link 7 via the hitch portion H.
Removably installed and the chemical tank 20 of the control machine S
Is slidably attached to the machine frame 18 of the pest control machine S in the front-rear direction, covers the upper side of the hitch portion of the chemical tank 20 of the pest control machine S, and has a bottom portion on the rear wheel 3 and the parallel link 7 of the machine 1 in a side view. The pest control device for a paddy work vehicle is configured to be switchable between a front position facing upward on the rear end side and a rear position on the machine frame 18 retracted from above the hitch portion by the slide operation.

Action When performing crop control work, remove the planting part that is mounted on the paddy field work vehicle, for example, the passenger rice transplanter's main unit via the parallel link and the hitch part, connect the pest controller to the hitch part, and connect it to the tank. After containing the chemicals, run the machine to start the control work.

By the way, in the present invention, since the medicine tank is disposed close to the machine side, the center of gravity of the tank becomes closer to the machine side, and the load on the parallel link and the hydraulic lifting device when moving up and down the control machine is reduced accordingly. Larger tank capacity can be set. In addition, when connecting the above-mentioned pest control machine, the drug tank is retracted from the vicinity of the hitch part, so that the hitch part can be visually recognized from the driver's seat position, so even if it is an automatic detachable hitch structure, connection operation is possible. Can be done accurately.

EXAMPLE The configuration of the present invention will be described with reference to an example shown in the drawings. Reference numeral 1 is a main body of a paddy field vehicle (a rice transplanter in the illustrated example) having front wheels 2 and rear wheels 3 and an engine 4 mounted on a front portion,
A planting portion M (see FIG. 3) is detachably attached to the rear portion of the plant through a parallel link 7 including a top link 5 and a lower link 6, and the planting portion M is connected to the lower link 6 by a hydraulic pressure (not shown). By rotating the lift arm, it is possible to move up and down while maintaining a horizontal posture. R is a hydraulic operation lever, and one lever R can control both the hydraulic valve and the PTO clutch at the same time. 8
Is a machine-side hitch provided on the free end side of the parallel link 7 (connecting portion M connection side), and a work-machine side hitch 9 is detachably connected to the machine-side hitch 8. The structures of the main unit side hitch 8 and the working unit side hitch 9 are illustrated in FIGS. 4 and 5. That is, the hitch on the machine side has upper and lower pin insertion holes 8a, 8b.
It is connected to the free end side of the top link 5 and the lower link 6 via connecting pins 10 and 11 which are inserted into, and has a U-shape in plan view, and is located at the upper corner of the rear side. A trough-shaped pin receiving seat 8c is integrally fixed, and a lateral pin fitting groove 8d is formed at a midway portion in the longitudinal direction. In addition, a hook 13 for locking, which is located in the vicinity of the pin insertion groove 8d and pivots up and down around the pivot pin 12, is provided in the hitch 8 on the machine side. You can operate it from the driver's seat. On the other hand, the work machine side hitch 9 is wider than the machine side hitch 8 and is open in the front side like the machine side hitch 8, and the pins 15 and 16 are vertically laid horizontally. Hitch part H by operation
Can be attached and removed with one touch. And
A control machine S is integrally connected to the work machine side hitch 9. That is, on the back side of the working machine side hitch 9, the PTO of this machine side
A power sprayer 17, which is operatively connected to the shaft via a drive shaft 17a, is fixed in a machine frame 18, and a frame 19 is located above the power sprayer 17 with the front half of the frame facing the parallel link 7. Is integrally fixed to the working machine side hitch 9 and the machine frame 18, and a medicine tank 20 with an agitator 20a is arranged in the frame body 19 close to the machine side, and is detachably fixed by a tightening band 21. Has been done. twenty two
Is an auxiliary step foldably attached to the front end of the frame 19, 23 is a suction pipe, 24 is a discharge pipe, and the discharge pipe 24
Is communicated with a jet pipe 26 described later via a stirrer 20a and a pipe 25.

By the way, although not shown in the figure, the agitator 20a has a built-in impeller and a flow-dividing valve that rotate at the discharge pressure of the drug, and the rotation of the impeller forcibly rotates the agitating impeller shaft penetrated into the tank 20. It is designed to stir the drug inside. For this reason, the discharge pressure (discharge amount) of the power sprayer 17 is set to a high value in advance, and the surplus drug is circulated into the tank 20 via the return pipe 27. Reference numeral 28 denotes a boss fixed to the rear portion of the frame body 19. A round rod-shaped stay 29 with a predetermined interval is provided on the boss 28 so that the stay 29 is rotatable and both wings are foldably inserted. By operating the lever 30 provided on one side of the driver's seat a, the arm 29a integrated with the stay 29 is pulled through the wire 31 to rotate the injection pipe 26 upward. In order to prevent damage and deformation of the injection pipe 26 when it hits an obstacle, the base end side is configured to be bendable via a flexible pipe 26a such as a rubber hose, and the outside thereof is wound with a coil spring 26b. 26 is held in a straight tube. 32 is a hose and 33 is a nozzle.

Now, the front wheels 2 and the rear wheels 3 are provided with weed guides 34, 35 via stays 34a, 35a to prevent the crops from being caught by the wheels. The one shown in FIG. 7 and FIG. 8 is V in plan view in front of the front wheel 2 via the stay 36.
A character-shaped guide plate 37 is provided.

In FIG. 9, the medicine tank 20 is configured to be switchable between a position covering the upper side of the hitch portion H and a position retracted from the vicinity of the hitch portion H. That is, FIG. 9 shows a structure in which the tank 20 is configured to slide forward and backward, and the work machine side hitch 9
A pair of left and right rails 38 are fixed on the machine frame 18 in the front-rear direction, and a frame 19 'and a tank 20 are mounted on the rails 38 so as to be slidable in the front-rear direction. Move the tank 20 rearward along the rail 38 as shown in
At the time of pest control work, the tank 20 is fixed to the rail 38 by the return stopper 39 at the position shown by the solid line near the main unit 1. In the figure, 18 'is a stand fixed to the machine frame 18.

In the above configuration, when disinfecting / controlling the crop b, the planting section M is removed from the main unit 1 side of the riding rice transplanter, and the control unit S is connected. At this time, with the parallel link 7 lowered, the main unit 1 is retracted toward the grounded insect control device S (the injection pipe 26 is raised), and the pin catch 8c of the main unit side hitch 8 is attached to the working unit side hitch. If the upper pin 15 of 9 is placed and the hydraulic / PTO clutch lever R is operated in that state to raise the parallel link 7, the working machine side hitch 9 is lowered downward about the upper pin 9 due to the weight of the pest control machine S. As the lower pin 16 of the working machine side hitch 9 is fitted into the pin fitting groove 8d of the working machine side hitch 8, the hook 13 is manually operated to lock the working machine side hitch 8 and the working machine side hitch 9 by rotating.

Then, the pest controller S is fixed to the required spray height by hydraulic operation (hydraulic fixation), the chemical to be sprayed is put in the tank 20, and then the spray pipe 26 is rotated and set according to the ridge of the crop b. , PTO
When the machine 1 is run with the clutch inserted, the chemicals in the tank 20 are cropped from the nozzle 33 of the nozzle 26 through the suction pipe 23, the power sprayer 17, the discharge pipe 24, the agitator 20a, and the pipe 25 in order. sprinkled on b. The circulation at the end of the line is carried out by rotating the injection pipe 26 to the horizontal state shown by the phantom line in FIG.

By the way, the pest control device of the present invention uses the main unit 1 such as a riding rice transplanter having a relatively light weight, a high height from the ground contact surface, and narrow wheels (tires) as a traveling body. Even for work with a narrow ridge width that is difficult to enter with a tractor, etc., it is possible to carry on and control the ridges and vegetables lightly without ruining. Moreover, since the chemical tank 20 of the extermination machine S is arranged close to the machine 1 side, the center of gravity of the tank is close to the machine 1 side, and the front-rear balance of the machine body during work is improved and stable pest control work is performed. Can be done. In addition, the tank capacity can be set as large as possible while solving the problems such as the strength of the parallel link 7 and insufficient lift, and the number of times of supplying the medicine to the tank 20 can be reduced correspondingly, and the workability can be improved.

Further, when the medicine tank 20 is configured to be switchable between a position covering the upper side of the hitch portion H and a position retracted from the vicinity of the hitch portion H, the tank 20 is placed in the vicinity of the hitch portion H when the pest control machine S is attached to or detached from the machine 1. The driver's seat a
Since the hitch portion H can be easily visually recognized from the position, the attachment / detachment work can be performed quickly and accurately.

EFFECTS OF THE INVENTION As described above, the present invention can significantly increase the utilization rate of a paddy field work vehicle without making a special improvement to the existing paddy field work vehicle such as a passenger rice transplanter, and the paddy field work vehicle. Since it is possible to disinfect and control ridge crops by effectively utilizing the functions and characteristics of the, it is possible to easily perform work even in fields such as vegetable fields where ridges are narrow and tractors cannot enter. Moreover, during the control work, the chemical tank of the control machine can be switched to the front position on the rear wheel of the machine side and above the rear end of the parallel link, so that the center of gravity of the tank is close to the machine side and the base end side of the parallel link. Therefore, the tank capacity can be set large while solving the problems of parallel link strength and lift, and the number of times of supplying chemicals to the tank can be reduced, improving work efficiency and maintaining good front-rear balance of the machine. it can. Further, when the pest control machine is connected to the lifting link, the medicine tank is configured to be switchable to the front position and the rear position retracted from the hitch portion, that is, the hitch portion, which is the connecting portion, can be easily changed from the driver's seat. The connection work of the hitch part can be performed easily and surely.

[Brief description of drawings]

Fig. 1 is an overall side view of a riding rice transplanter with a control unit connected to the main unit, Fig. 2 is a rear view of the same, Fig. 3 is a side view of the riding rice transplanter, and Fig. 4 is a hitch on the unit side. FIG. 5 is a perspective view showing the structure of the working machine side hitch, FIG. 5 is a cross-sectional view showing a connecting state of the working machine side hitch and the working machine side hitch, and FIG. 6 is a plan view of the machine.
The figure shows a side view of the machine equipped with a weeding plate with a pest control machine connected, Fig. 8 is a plan view of the same machine as above, and Fig. 9 shows a position where the drug tank covers the upper side of the hitch and the vicinity of the hitch. FIG. 3 is a side view of each of the examples configured to be switchable to a position retracted from. 1 ... This machine of paddy work vehicle, 7 ... Parallel link, 8 ... Machine side hitch, 9 ... Work machine side hitch, 17 ... Power sprayer, 20 ... Drug tank, H ... Hitch part, M: planting section, S: pest control machine.

Claims (1)

(57) [Claims] 1. A paddy work vehicle in which a working machine (M) is detachably mounted via a parallel link (7) having a hitch section (H) at the rear of the machine (1), the hitch section (H) being The control machine (S) is detachably attached to the parallel link (7) via the parallel link (7), and the chemical tank (20) of the control machine (S) is slid forward and backward with respect to the machine frame (18) of the control machine (S). The medicine tank (20) of the disinfecting machine (S) is mounted so that it can cover the upper side of the hitch and the bottom part is on the rear wheel (3) of the machine (1) and the rear end side of the parallel link (7) in a side view. A pest control device for a paddy field vehicle, which is configured to be switchable between a front position facing upward and a rear position on a machine frame (18) retracted from above a hitch portion by the slide operation.