JPH0545138Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a fertilization device that can be applied to a fertilization device that applies liquid fertilizer into the soil at the same time as planting seedlings using a planting device. The present invention relates to a fertilization device in which each of the fertilization nozzles can be tilted up and down independently, and furthermore, all the fertilization nozzles can be tilted up and down at the same time.

[Prior art]

This type of fertilization device connects the fertilization nozzle that communicates with the fertilizer pump to a lever that connects and disconnects the clutch of the planting device via a wire, and lifts the fertilization nozzle out of the soil when the planting device is stopped. A nozzle lifting device has been proposed in Japanese Utility Model Publication No. 53-39619.

Also, for example, as in Utility Model Application Publication No. 58-52918,
A flow path switching device installed between the fertilizer pump and the fertilization nozzle is linked to the lifting and lowering movements of the planting device connected to the machine body, and the flow path to the fertilizing nozzle side is closed in conjunction with the lifting movement of the planting device. That is already known.

[Problem that the invention attempts to solve]

By the way, the conventional tilting device that tilts the fertilizing nozzles up and down is a wire-linked system in which multiple fertilizing nozzles are linked to a lever via a single wire, etc. In the case of a type that connects a large fertilizer application device to the passenger aircraft for planting at the same time, it is extremely troublesome to connect and adjust the lever on the passenger aircraft side and the wire on the fertilizer application device side, making it difficult to set up the fertilizer application device and the passenger aircraft. Not only that, but there is also the problem that the lever operation becomes extremely heavy. Furthermore, tilting a large number of fertilizing nozzles up and down independently not only increases the number of wires and levers;
The interlocking structure of single up/down and multiple simultaneous up/down is very complicated, so when planting along the ridge, it is necessary to stop planting any number of rows out of the total number of rows planted by the planting device and perform row alignment work. However, there was a problem in that the fertilizing nozzle could not be easily tilted to the fertilizing stop position where the rear end rose from the soil.

Therefore, the present invention was devised to solve the above-mentioned problems with the conventional technology. It is an object of the present invention to provide a fertilization device with a simple structure that can tilt up and down and simultaneously tilt.

[Means to solve the problem]

The fertilization device of the present invention that achieves the above purpose is a fertilization device that fertilizes liquid fertilizer in the soil using a large number of fertilization nozzles that pass through a fertilizer pump using liquid fertilizer in a fertilizer tank. The valve is connected to each solenoid so as to be independently operable so as to be tilted to a fertilization position where the rear end is lowered into the soil and a fertilization stop position where the rear end is raised from the soil around a switching valve that rotates to close. This system connects all solenoids to a simultaneous open/close switch that opens and closes them simultaneously, and tilts a large number of fertilizing nozzles at the same time.

[Effect]

Therefore, by operating the solenoid alone, the fertilizing nozzle can be placed in any position, such as a fertilizing position where the rear end is lowered into the soil around the switching valve that opens when fertilizing and closes when fertilizing is stopped, and a fertilizing position where the rear end is lowered into the soil. It can be tilted from the middle to the rising fertilization stop position.
Furthermore, these independently operable fertilizing nozzles can be tilted between the fertilizing position and the fertilizing stop position at the same time by operating simultaneous open/close switches connected to all solenoids, without using wires or the like as in the conventional case.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings as an embodiment thereof.

Figure 1 is a plan view of the main part, Figure 2 is A-A in Figure 1.
Figure 3 is a side view of the main parts as viewed from arrow A, Figure 3 is an overall side view of a riding rice transplanter connected to a fertilizer application device, Figure 4 is an electrical circuit diagram, Figure 5 is a perspective view of the bonnet, Figure 6 is a side view of the other parts. FIG. 2 is an example electrical circuit diagram.

As shown in FIG. 3, the passenger aircraft 1 is designed to travel using front wheels 2 and rear wheels 3 configured in a four-wheel drive format, and a parallel link provided at the rear of the passenger aircraft 1 that can freely move up and down. A planting device 5 is connected to the rear end of the vehicle 4, and the planting device 5 moves up and down via a parallel link 4 that moves up and down by the expansion and contraction of a hydraulic expansion and contraction mechanism (not shown) provided in the passenger aircraft 1.

This planting device 5 includes a diagonally inclined seedling platform 6 that moves back and forth in the horizontal direction and on which a plurality of pine seedlings are placed, and a plurality of planting cases arranged in the front and back direction below this seedling platform 6. 7. It is composed of each planting rod 9 pivotally supported at the rear end of the mission case 7, a plurality of floats 10 arranged below the mission case 7, and sliding on the rice field. This planting device 5 is driven from the passenger vehicle 1 side by a driven shaft 12 connected to a transmission shaft 11 protruding rearward of the passenger vehicle 1, and the planting rod 9 is a single plant separated from the pine seedlings on the seedling platform 6. Plant the seedlings N.

The fertilizer application device 15 mounted on the passenger aircraft 1 includes a fertilizer pump 19 that divides and discharges paste-like fertilizer in fertilizer tanks 17 disposed on both left and right sides of the driver's seat 16 into the number of planting rows. A plurality of discharge pipes 22 connecting each discharge port and the row stopper mechanism 21, and a large number of fertilization nozzles 20 fixed to the row stopper mechanism 21 and the float 10 side of the planting device 5.
The fertilizer pump 19 is composed of a large number of discharge pipes 23 and the like which are connected to each other separately.

As shown in detail in FIGS. 1 and 2, each fertilization nozzle 20 is centered around a switching valve 25 that rotates to open when fertilizing and close when fertilization is stopped.
The device is tilted between a fertilization position where the planting device 5 is lowered and the rear end of the fertilization nozzle 20 is lowered into the soil, and a fertilization stop position where the planting device 5 is raised and the rear end of the fertilization nozzle 20 is raised from the soil. It is connected to each solenoid 30 so that it can be operated independently.

In other words, the switching valve 25 has its central axis 26a
a fixed valve 26 having a
Rotary valve 2 rotatably positioned on the outer periphery of
7, and this fixed valve 26 has an extended end of a central shaft 26a provided at the center thereof fixed to a fixed bracket 24 on the float 10 side, and a fixed valve 26 that extends downward from the inside through the center from above. Fertilizer flow holes 29 are opened. Moreover, inside the rotary valve 27, at the fertilizing position of the fertilizing nozzle 20,
An upper fertilizer flow hole 31 and a lower fertilizer flow hole 32 linked to the fertilizer flow hole 29 on the fixed valve 26 side.
are opened respectively, and the end of the discharge pipe 23 is connected to the fertilizer flow hole 31 on the upper side, and the base end of the fertilization nozzle 20 is connected to the fertilizer flow hole 32 on the lower side.

At the fertilization stop position where the rotary valve 27 is displaced by a predetermined angle, the positions of both the upper and lower fertilizer flow holes 31 and 32 provided on the rotary valve 27 side move to the chain line state shown in FIG. Both side flow holes 3
1 and 32 are closed at the same time, the paste-like fertilizer discharged from the discharge pipe 23 communicating with the fertilizer pump is reliably stopped.

The rotary valve 27 includes a connecting plate 33 fixed to the rotary valve 27, a connecting rod 35 whose tip fits into a connecting hole 34 provided in the connecting plate 33, and a proximal end of the connecting rod 35 connected to a plunger on the solenoid 30 side. It is connected to a solenoid 30 by being connected and fixed to a connecting cylinder 36 fixed to 30a, and this solenoid 30 is further fixed to a bracket 37 fixed to the float 10 side. The connecting tube 36
A return spring 39 of the plunger 30a and a flat washer 41 are interposed between the and the solenoid 30, and a lock pin 42 whose base end is fixed to the connecting cylinder 36 has its tip at the fertilizing position of the fertilizing nozzle 20. The rotary valve 27 is fitted into the stop hole opened in the connecting plate 33 to a predetermined depth to lock the rotary valve 27 in a fixed state.

Furthermore, a torsion spring 43 is provided on the central shaft 36a of the fixed valve 36 and fitted around its outer periphery, one end 43a of which contacts a pin 44 fixed to the rotary valve 27, and the other end 43b contacts the bracket 2.
4, the biasing force of the torsion spring 43 that comes into contact with the
Due to the urging force of the return spring 39, the rotary valve 27 and the fertilizing nozzle 20 are restored to the fertilizing position shown by the solid line. In addition, in this restored position, the fertilizing nozzle 20 is connected to the regulating pin 4 fixed to the float 10 side.
5, and further clockwise rotation of the fertilizing nozzle 20 is restricted, so the tip of the connecting rod 35 moves to the X position and comes into contact with the elongated hole 34 of the connecting plate 33.

Each solenoid 30 can be independently operated by being connected to a battery 47 via each manual switch 46 by an electric circuit shown in FIG. Each manual switch 46 is provided on an operation panel 55 near the steering wheel 54 as shown in FIG. This is indicated by an indicator light 58. In addition, the code 65
is the main switch.

Furthermore, all these solenoids 30,30
... are connected to a travel clutch switch 51 which is turned ON in conjunction with the disengagement operation of the travel clutch and turned OFF in conjunction with the engagement operation of the travel clutch via respective diodes 49, 49... for preventing current backflow. , is configured as a simultaneous opening/closing switch 50 that simultaneously opens and closes all the solenoids 30, 30...30 by opening and closing this traveling clutch switch 51, and by turning on this simultaneous opening/closing switch 50, all the fertilizing nozzles 20, 20... valve 2
5 to the fertilization stop position, and when the simultaneous open/close switch 50 is turned OFF, all the fertilization nozzles 20, 20... are simultaneously tilted back to the fertilization position with the switching valve 25 as the center.

This simultaneous opening/closing switch 50 is turned ON in conjunction with the cutting operation of the planting clutch that connects and connects the planting device 5.
The planting clutch switch 52 may be turned OFF in conjunction with the engagement operation of the planting clutch, or it may be turned ON when the parallel link 4 is raised and turned ON when the parallel link 4 is lowered.
It may be the lifter switch 53 that turns OFF,
Alternatively, these three switches 51, 52, 53 may be provided simultaneously in parallel as in the embodiment.

Therefore, when the manual switch 46 or the simultaneous open/close switch 50 is turned on, the solenoid 30
is excited, the connecting rod 35 integrated with the plunger 30a moves toward the solenoid 30 against the urging force of both springs 39, 43, but while the tip of the connecting rod 35 moves from X to Y, As the tip of the locking pin 42 comes off the hole in the connecting plate 33, the rotary valve 27 is rotated around the outer circumference of the fixed valve 26 to the chain line position, and the fertilizing nozzle 20 is brought to the fertilizing stop position where the rear end rises from the soil. By tilting and stopping discharge of the paste-like fertilizer from the discharge pipe 23, it is reliably prevented that the paste-like fertilizer is washed away from the rear end of the fertilization nozzle 30 when fertilization is stopped. Displayed by Then, press the manual switch 46 at any position.
By turning it ON, the fertilization nozzle 20 at any position can be tilted to the fertilization stop position, so when planting along the ridge, any number of rows out of the total number of rows of the planting device 5 can be planted. During row alignment work performed while stopped, the fertilizing nozzle 20 can be easily tilted to the fertilizing stop position where the rear end rises from the soil.

Furthermore, when the manual switch 46 or the simultaneous open/close switch 50 is turned OFF, the solenoid 30 is demagnetized and the connecting rod 35 is moved back to its original position by the urging force of both springs 39 and 43. The fertilizing nozzle 20 is tilted to the fertilizing position where the rear end is lowered into the soil, and the tip of the locking pin 42 is inserted into the hole in the connecting plate 33, and the fertilizing nozzle 20 is locked in the fertilizing position. At the same time, the tip of the connecting rod 35 moves in the order of Y→X. At this fertilization position, discharge of the paste-like fertilizer is started from the discharge pipe 23, and the paste-like fertilizer is applied from the rear end of the fertilization nozzle 20 in the soil to the side row position on the outside between the rows of the planted seedlings N.

Next, as in the electric circuit shown in FIG. 6, by providing a storage switch 61 and a safety switch 62 in the basic circuit shown in FIG. 4, it is possible to prevent damage to the fertilizing nozzle 30 during storage, etc. ,
This circuit includes an indicator light 63 that indicates the ON state of the storage switch 61 and an ON state of the safety switch 62.
An indicator light 64 is provided to display the status, and this storage switch 61 is provided on the operation panel 55.
Also, the indicator light 64 (or 63) is connected to the bonnet 56.
is installed on the top surface of the

By providing this safety switch 62 at a descending height of the parallel link 4 where the lower end of the fertilizing nozzle 20 of the planting device 5 connected to the parallel link 4 does not touch the ground, planting can be done with the storage switch 61 in the ON state. When the device 5 is lowered, the safety switch 62 turns on at a predetermined height of the parallel link 4, and all the solenoids 30 turn on, so all the fertilizing nozzles 20 rise to the fertilizing stop position, and the fertilizing nozzles 20 It is possible to reliably prevent the float 20 from touching the ground before the float 10 and being damaged.

[Effect of idea]

In short, the fertilization device according to the present invention is a fertilization device that fertilizes liquid fertilizer in the soil using a large number of fertilization nozzles that pass through a fertilizer pump using a liquid fertilizer in a fertilizer tank. It is connected to each solenoid so that it can be operated independently so that it can be tilted around a rotating switching valve between a fertilization position where the rear end descends into the soil and a fertilization stop position where the rear end rises from the soil. Since the solenoids are connected to a simultaneous open/close switch that opens and closes simultaneously, and tilts a large number of fertilizing nozzles at the same time, the rear end is centered around the switching valve that rotates to open the fertilizing nozzles when applying fertilizer and close them when stopping fertilizing, due to the independent operation of the solenoid. It can be tilted between the fertilizing position where the nozzle descends into the soil and the fertilizing stop position where the rear end rises from the soil, making it easy to raise the desired fertilizing nozzle to the fertilizing stop position and perform row alignment work. In addition, since the switching valve closes when the fertilization is stopped, it is possible to reliably prevent liquid fertilizer from dripping from the rear end of the fertilization nozzle. Moreover, this large number of independently operable fertilizing nozzles has a simple structure in which all solenoids are connected to a simultaneous open/close switch, and can be tilted to the fertilizing position and the fertilizing stop position at the same time by operating the simultaneous open/close switch. Therefore, all the fertilizing nozzles can be tilted at the same time in conjunction with operations such as running/stopping the machine, rotating the machine, or raising and lowering the planting device, without using wires or the like as in the conventional method.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a plan view of the main part, FIG. 2 is a side view of the main part taken along the line A-A in FIG. 1, FIG. 3 is a side view of the entire riding rice transplanter connected to a fertilizer applicator, FIG. 4 is an electrical circuit diagram, and FIG.
The figure is a perspective view of the bonnet portion, and Fig. 6 is an electric circuit diagram of another example. 1 ... riding vehicle body, 4 ... parallel link, 5 ... planting device, 20 ... fertilizer nozzle, 25 ... switching valve, 26 ... fixed valve, 27 ... rotating valve,
30: solenoid, 35: connecting rod, 46
……Manual switch, 50……Simultaneous opening and closing switch,
51...Travel clutch switch.

Claims (1)

[Scope of utility model registration request] In a fertilization device that applies liquid fertilizer in a fertilizer tank into the soil using a large number of fertilizing nozzles that pass through a fertilizer pump, the fertilizing nozzles are connected to the rear end with a switching valve that rotates to open when fertilizing and close when fertilizing stops. It is connected to each solenoid so that it can be operated independently so that it can be tilted to the fertilization position where it descends into the soil, and the fertilization stop position where its rear end rises from the soil, and it is also connected to a simultaneous open/close switch that opens and closes all of these solenoids at the same time. A fertilizer application device that tilts multiple fertilizer nozzles at the same time.