JPH07236326A - Fertilizing structure of paddy field working machine - Google Patents

Abstract

PURPOSE:To suppress fertilizer waste in the case of a fraction lane planting in a paddy field working machine when fertilizing a pasty fertilizer. CONSTITUTION:In a paddy field working machine so made up to be able to distributedly supply a fertilizer from each of plural fertilizer pumps 12, 12 to fertilizer supplying parts 14, 14 each for every 2 lanes from a fertilizer tank, where the pump can be driven mutually independently, a switching valve 29 capable of switching a state supplying the fertilizer to the supplying parts 14 to a state returning the fertilizer to the upstream of paths of the fertilizer pumps by cutting off the fertilizer supply is installed in a path of the fertilizer supplying parts 14, which lies at the outermost side of the machine body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fertilizer application structure in a paddy working machine such as a rice transplanter or a direct seeder, in which a paste-like fertilizer is fed into the paddy field as the machine body advances.

[0002]

2. Description of the Related Art In a rice transplanter, which is an example of a paddy working machine, a plurality of seedling planting devices provided on the rear portion of a machine are provided with a plurality of floats as disclosed in Japanese Utility Model Publication No. 63-49148. One pipe-shaped fertilizer application nozzle (17 in Fig. 1 of the above publication) (corresponding to the fertilizer supply section) is fixed, the fertilizer application nozzle is extended from the paddy field to the position of the set depth, and paste is applied from each fertilizer application nozzle. There is one that is configured to feed fertilizer-like fertilizer from the rice field to the position of the set depth.

In this case, a fertilizer tank (7 in FIG. 1 of the above publication) is provided on the machine side, and fertilizer from this fertilizer tank is fed into the fertilizer pipe (11, 13 in FIG. 1 of the above publication). Through a plurality of fertilizer pumps (1 in FIG. 1 of the above publication)
2), and the fertilizer is supplied from each fertilizer pump to each fertilizer nozzle via the fertilizer hose (14, 16 in FIG. 1 of the above publication).

[0004]

[Problem to be Solved by the Invention] Since the fertilizer is distributed from the fertilizer tank to the respective fertilizer application nozzles through the multiple pumps, when the fractional row planting is performed at the ridge, the fertilizer pump of an unnecessary row is used. I couldn't stop it, and there was the inconvenience of draining manure.

Therefore, as a first means for solving the above-mentioned drawbacks, it is conceivable that the multiple pumps are composed of a plurality of pumps which can be individually driven and stopped so as to enable fractional row planting. In such a case, However, there is an inconvenience that the cost increases with an increase in the number of parts such as pumps for each line, wiring for them, and switches.

[0006] Therefore, as a second means for planting a fractional row using a small number of pumps, it is conceivable that one pump distributes and supplies the fertilizer to each of the two rows of fertilizer supply sections. In such a case, Since it is a unit of 2 articles, for example,
In a paddy work machine with 6 rows planted, by stopping one pump, it is possible to plant 4 rows of fractional rows without running down fertilizer, but when performing 5 rows of fractional row planting, There is an inconvenience that only one row can be stopped and five fractional rows can be planted without running off fertilizer.

An object of the present invention is to apply fertilizer every two rows by one pump, and it is therefore possible to stop the fertilizer supply for only one row on the outermost side of the machine body.

[0008]

A characteristic configuration of the present invention is to provide a plurality of fertilizer supply parts capable of sending paste-like fertilizer from a paddy field to a position of a set depth, and to supply fertilizer to the fertilizer supply parts, respectively. A plurality of independently driven fertilizer pumps and a fertilizer tank for storing paste-like fertilizer are provided,
The fertilizer from each of the fertilizer pumps can be distributed and supplied to the fertilizer supply unit in units of two articles, and the fertilizer is supplied to the fertilizer supply unit in the route to the outermost fertilizer supply unit. The point is that a switching valve that can be selected between a state and a state in which the supply of fertilizer to the fertilizer supply unit is shut off and the fertilizer pump is returned to the upstream side of the flow path is provided.

[0009]

[Function] When the fertilizer pump is stopped, the fertilizer supply to the two-row fertilizer supply section is stopped. Therefore, for example, in a six-row planting paddy working machine, when four-row fractional-row planting is performed, If one fertilizer pump is stopped, four fertilizers can be supplied.

[0010] When planting a fractional number of 5 rows, the cut-off fertilizer is removed by switching the switching valve provided in the path to the fertilizer supply section on the outermost side of the machine to the state where the fertilizer supply is cut off. The fertilizer pump is returned to the upstream side of the flow path of the fertilizer pump via the return path, the fertilizer supply to the outermost fertilizer supply section of the machine is stopped, and the fertilizer can be supplied in five rows.

[0011]

As a result of the above construction, even if a small number of fertilizer pumps are used, odd-numbered and even-numbered fractional-row planting can be performed without causing the fertilizer to flow.

[0012]

EXAMPLES Examples of the present invention will be described below with reference to a six-row planting type rice transplanter, which is an example of a paddy field working machine.

As shown in FIG. 1, a link mechanism 4 is provided at the rear of the machine body supported by the front wheels 1 and the rear wheels 2 so as to be lifted and lowered by a hydraulic cylinder 3, and the link mechanism 4 is provided with a seedling planting device 19. A passenger-type rice transplanter, which is an example of a paddy work machine, is configured by being connected.

As shown in FIGS. 2 and 3, the seedling planting device 19
Is a pair of planting cases 6 that are rotationally driven around the horizontal axis P1 of the three planting transmission cases 8 (corresponding to the machine body fixing portions), and a pair of planting claws 7 provided at both ends of the planting cases 6. , The seedling stand 5 and the float 9 are configured in a 6-row planting type, and the pair of planting claws 7 alternately take out the seedlings W from the seedling stand 5 along with the rotation of the planting case 6, and the rice field S To plant.

This riding type rice transplanter has a fertilizing structure for feeding paste-like fertilizer into the rice field S. Next, this fertilizing structure will be described.

As shown in FIG. 2, the groove plate 13 which will be described later.
Is provided with a cylindrical fertilization pipe 14 (corresponding to a fertilizer supply section) having an outer diameter narrower than the width of the fertilizer, and the fertilizer outlet 14a is formed by notching the lower end of the fertilizer pipe 14 to the rear side of the machine. A guide plate 16 extending to the rear side of the machine body is fixed to the lower end of 14. A connecting fitting 18 is fixed to the upper portion of the fertilizer application pipe 14.

A triangular grooved plate 13 having a predetermined width in a side view is fixed to the float 9 corresponding to each of the six planting lines, and the guide plate 16 at the lower end of the fertilizer pipe 14 is grooved. It is placed on the extension 13a at the lower end of the plate 13, the connecting metal fitting 18 is connected to the upper part of the grooving plate 13 with the screw 17, and the fertilizer application pipe 14 is positioned within the width of the rear part of each grooving plate 13. It is connected. Fertilizer outlet 1 of each fertilizer pipe 14
A flat plate-like pressing member 15 that surrounds the rear side of the fuselage on the upper side of 4a and the left and right sides of the upper side is provided with screws 17 on each float 9.
It is fixed at.

As shown in FIG. 2 and FIG. 3, support brackets 28 are fixed to the three planted transmission cases 8 behind the seedling stand 5, and a cylindrical stainless steel support extends over each support bracket 28. The pipe 23 is erected and connected, and both ends of the support pipe 23 are closed by the support brackets 28. One fertilizer pipe 26 made of stainless steel is connected to the support pipe 23.
As shown in FIG. 1, a fertilizer hose 11 from the fertilizer tank 10 that also serves as a steering step is connected to the lower end of the fertilizer hose 11.

As shown in FIGS. 3 to 5, the support pipe 2
Three fertilizer pumps 12 of the plunger type are fixed to 3, and three communication pipes 27 (corresponding to communication passages) from the support pipe 23 are suction ports (not shown) of the three fertilizer pumps 12.
And a hose 20 from each fertilizer pump 12 is bifurcated and connected to a pair of fertilizer pipes 14, 14.

With the above structure, the fertilizer from the fertilizer tank 10 is fed with the fertilizer hose 11, the fertilizer pipe 26, and the support pipe 2.
The fertilizer pumps 12 are distributed and supplied to the three fertilizer pumps 12 through the inside 3 and the communication pipes 27, and the fertilizer pumps 12 are driven as described below, so that the fertilizer is fed from each fertilizer pump 12 to the hose 20.
Will be supplied to each of the two fertilizer application pipes 14, 14.

As shown in FIGS. 2 to 4, the support pipe 2
The operation arm 24 is swingably supported around the horizontal axis P2 of the bracket 23a fixed to the bracket 3, and the upper end of the operation arm 24 is located on the plunger 12a of the fertilizer pump 12. The operation arm 24 and the support pipe 23 support a pair of links 22 so as to be vertically swingable, and the tips of the pair of links 22 are pin-connected. The connecting member 2 extends over both support shafts that support the planting claw 7 on the planting case 6.
5 are erected and connected, and the intermediate part of the connecting member 25 and the tip of the link 22 are connected by the push-pull rod 21.

With the above structure, when one of the planting claws 7 takes out the seedling W from the seedling placing table 5, both links 22 are in a horizontal posture. From this state, when the airframe moves to the left side of the paper surface of FIG. 4 and the planting case 6 rotates counterclockwise on the paper surface, the push / pull rod 21 is pulled to the planting case 6 side, and both links 22 are moved downward. The manipulating arm 24 is rocked, and the manipulating arm 24 starts rocking to the fertilizer pump 12 side. Thereby, the plunger 12 of the fertilizer pump 12 is operated by the operation arm 24.
When a is pushed, fertilizer begins to be sent out from the fertilizer application pipe 14. Then, when one of the planting claws 7 holding the seedling W reaches the rice field S, the fertilizer is already sent out linearly from the fertilizer application pipe 14, and the seedling W near the center of the linear fertilizer.
Are planted.

As described above, when the planting case 6 is rotated once and the seedling W is planted by the pair of planting claws 7, the plunger 12a of the fertilizer pump 12 is pushed twice in conjunction with this. Then, the fertilizer is sent from the fertilizer application pipe 14 into the rice field S.

As shown in FIG. 5, in the middle of the hose 20 for forming a route to the fertilizer supply section 14 on the outermost left and right sides of the machine,
Three-way switchable between a state in which fertilizer is supplied to the outermost fertilizer supply unit 14 and a state in which the supply of fertilizer is cut off and the fertilizer pump 12 is returned to the support pipe 23 on the flow path upstream side of the fertilizer pump 12. A switching valve 29 is provided, and the switching valve 29 and the support pipe 23 are connected via a return pipe 30. Therefore, when planting all the rows, Fig. 5 (a)
As shown in, the fertilizer is supplied to the total fertilizer supply unit 14, and
For example, when the leftmost one row is planted and stopped, the fertilizer supply to the fertilizer supply unit 14 corresponding to this can be cut off.

As shown in FIG. 6, the fertilizer tank 10 is a fertilizer tank which has left and right tank portions 10a and 10a and which also serves as a manipulating step. Therefore, the weight balance of the machine is not changed significantly, and the fertilizer supply port 10b is located at the frontmost end of the machine as shown in FIG. 1 so that the fertilizer can be easily supplied to the tank from the ridges. is there. Further, both fertilizer tanks 10a, 10a are connected by a communication pipe 10c so that the supplied fertilizer is evenly distributed to the left and right tank portions 10a, 10a.

[Other Embodiment] As shown in FIG. 8, as a means for increasing the capacity of the fertilizer tank, a pair of left and right auxiliary parts are provided at the front part of the front wheel in consideration of the front-rear balance with the seedling planting device at the rear part of the machine body. The fertilizer tanks 31, 31 may be provided in a state of communicating with the fertilizer tank 10 that also serves as a control step.

Further, a four-row planting or eight-row planting even-row planting type rice transplanter planting machine for supplying fertilizer every two rows, or fertilizing with two rows on each side and a single row at the center 5 It can also be applied to odd-type row planting rice transplanters and planters.

In addition, as shown in FIGS. 9 and 10, in the 8-row planting type rice transplanter planting machine in which the seedling planting device 5 is a folding type, the fertilizer tanks 1 arranged on the left and right sides of the front part of the machine body.
Fertilizer tanks 1 on the left and right so that 0,10 fertilizer is evenly reduced
After connecting 0 and 10 with one fertilizer hose 11a,
Separate fertilizer hoses 11b, 11b and support pipe 2
It is configured such that they can be distributed and supplied to the left and right fertilizer application devices via 3, 23, respectively.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Overall side view of the riding rice transplanter

[Figure 2] Side view of the planting device

[Figure 3] Rear view of seedling planting device

FIG. 4 is a side view showing a support and drive structure of a fertilizer pump.

[Fig. 5] Schematic diagram showing the switching state of fertilizer application (a) All-row planting state (b) Minor-row planting state

FIG. 6 is a schematic plan view showing the arrangement of fertilizer tanks, fertilizer hoses, etc.

[Figure 7] Partially broken rear view of the fertilizer tank

FIG. 8 is a schematic plan view showing the arrangement of fertilizer tanks, fertilizer hoses, etc. according to the second embodiment.

FIG. 9 is a plan view showing the arrangement of fertilizer tanks, fertilizer hoses, etc. according to the third embodiment.

FIG. 10 is a schematic plan view showing the storage state of the fertilizer application device.

[Explanation of symbols]

 10 Fertilizer tank 12 Fertilizer pump 14 Fertilizer supply unit 29 Switching valve S Tabani

Claims (1)

[Claims] 1. A plurality of fertilizer supply parts (1) capable of feeding paste-like fertilizer from a rice field (S) to a position of a set depth.
4), a plurality of independently operable fertilizer pumps (12) for supplying fertilizer to the fertilizer supply section (14), and a fertilizer tank (10) for storing paste-like fertilizer, The fertilizer from the fertilizer pump (12) is configured so that it can be distributed and supplied to the fertilizer supply units (14) and (14) in units of two articles, respectively, and further, in the route to the outermost fertilizer supply unit (14) of the machine, Select between a state in which fertilizer is supplied to the fertilizer supply unit (14) and a state in which the supply of fertilizer to the fertilizer supply unit (14) is cut off and the fertilizer pump (12) is returned to the upstream side of the flow path. Fertilizer structure for paddy work machines with possible switching valve (29).