JPH0763262B2 - Fertilizer application - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fertilizer application apparatus for dropping fertilizer to a predetermined depth from a mud surface and placing the fertilizer on a side of a planted seedling at the same time as planting.

[Conventional technology]

The working mode in this type of fertilizer application is to form a fertilizer dropping groove with a grooving device located at a predetermined depth below the mud surface, and by feeding fertilizer from the fertilizer storage hopper connected to this grooving device, Fertilizer was dropped from the grooving device into the groove (Japanese Utility Model Laid-Open No. 63-15724).

[Problems to be Solved by the Invention]

In such a working mode in which a groove is formed using a grooving device and the fertilizer is naturally dropped into the groove, even if the groove is formed when the mud surface is a soft land with a lot of water content, the groove is immediately formed. It was difficult to drop the fertilizer at a predetermined depth position below the mud surface because the highly fluid mud flowed inside and filled the groove.

The object of the first invention is to change the grooving device itself to a rational one so that fertilization work can be performed reliably even in a weak field, and a mechanism adopted for that purpose (for example, specifically described later). The purpose of the second invention is to change the grooving device itself to a rational one, and to improve the fertilization work by the adhesion of mud. The point is to provide something that can avoid work failures.

[Means for Solving the Problems]

A characteristic configuration according to the first invention is that a receiving portion for receiving fertilizer fed from a fertilizer storage hopper is formed on an outer peripheral surface of the groove cutting rotary body, and the groove cutting rotary body having the receiving portion formed. The outer peripheral surface of the fertilizer fed from the fertilizer storage hopper above the point to provide an arc top cover covering from the receiving position to the fertilizing position below, and the fertilizer placed in the receiving portion in the mud And the point that the tip extruding surface that acts on the fertilizer in this extruding tool is configured to protrude from the outlet opening end of the receiving portion in the pushing action posture. In the characteristic configuration according to the second aspect of the invention, a plurality of receiving portions for receiving the fertilizer fed from the fertilizer storage hopper are provided on the bottom surface of the annular recessed groove formed on the outer peripheral surface of the groove cutting rotary body. Points formed at a predetermined pitch and a plurality of receiving portions A point provided with an arc-shaped lid that covers the outer peripheral surface of the grooving rotary body that has formed from the receiving position of the fertilizer fed from the fertilizer storage hopper above to the fertilizing position below, and the inside of the receiving portion. And a point for providing an extruding tool for extruding the fertilizer placed in the mud at a predetermined position in the mud, and a scraper for scraping off the mud entering the annular recessed groove as the groove rotating body rotates. There are two points, and their effects are as follows.

[Operation of First Invention] Assuming that the receiving portion (23a) receives fertilizer above the mud surface as shown in FIG. 1 (substantially not on the mud surface), While receiving the fertilizer at the receiving portion (23a) that has reached the surface of the mud as the groove rotating body (22) rotates, the receiving portion (23a) that rotates while holding the fertilizer is The arc-shaped lid (30) prevents the fertilizer from leaking out from the receiving position to the predetermined position in the mud surface, and the extrusion tool (27) when reaching the predetermined position in the mud surface.
Push the fertilizer into the mud surface.

[Effect of the first invention] Therefore, while the fertilizer is prevented from leaking out by the arcuate lid (30), the fertilizer is brought to a predetermined position by the receiving portion (23a) and forcedly pushed at the predetermined position. Assures fertilizing work regardless of field hardness. However, using the rotary body for grooving (22) to bring in and release fertilizer up to a predetermined depth, Japanese Utility Model Publication No. 51-128913 and Japanese Utility Model Publication No.
There is one disclosed in Japanese Patent No. 51-122011, but the one according to the present invention is further provided with an extruding tool (27), so that the open end of the receiving portion (23a) receives fertilizer and rotates in the mud. Even if mud is stuck between them and they are blocked, they can be forcedly pushed out by the pushing tool (27), so that the fertilizer remains in the receiving portion (23a) without being released. Absent.

Moreover, as described in the characteristic configuration, when the fertilizer is extruded, the tip extruding surface is made to project from the outlet opening end of the receiving portion (23a). It can be pushed out to one side and the receiving part (23a)
When the extruding tool tip extruding surface is projected from the outlet opening end of the mud fertilizer, the mud fertilizer, etc. adhering to the extruding tip of the extruding tool may be scraped off by the rubbing action of the rotation with the bottom surface of the groove, and the fertilizer is received. It is possible to minimize the amount of mud and the like remaining in the receiving portion (23a) at the time.

[Operation and Effect of Second Invention] The operation and effect of the groove cutting rotary body (22) including the pushing tool (27) are the same as those of the first invention, but the receiving portion (23
By forming an annular recessed groove (a) further on the outer peripheral side than a), both side walls forming this annular groove push straw dust and the like into the mud, and these straw waste are discharged from the receiving portion (23a). By adopting a configuration that prevents a phenomenon that obstructs the fertilizer extruding action of the extruding tool (27) such as closing the opening end, and providing the annular recessed groove (a), rather, the side wall (24) and the bottom surface are rather contradicted. The adhering mud is scraped off with a scraper (38) in advance to block the upper part of the receiving opening end of the receiving portion (23a) to prevent the input of the fertilizer to be extruded, or the extruding tool (27 which protrudes from the receiving portion (23a). ) It is possible to prevent it from adhering to the tip pushing surface and entering the receiving portion (23a).

〔Example〕

Hereinafter, a riding-type rice transplanter equipped with a fertilizer application, which is one of the embodiments of the present invention, will be described with reference to the drawings.

As shown in FIG. 3, a planting arm (2) that is rotationally driven at the rear of the planting mission (1) and a seedling stand that slides on a guide rail (3) attached to the planting mission (1). A seedling planting device is constituted by (4) and the like, and this seedling planting device is movably connected to a machine body (not shown) via a four-link mechanism (5).

The seedling planting device includes a fertilizer application device as an agricultural powder fluid spraying device. As shown in the figure, the fertilizer application device intermittently feeds the fertilizer in the fertilizer storage hopper (7) and the hopper (7). Feeding mechanism (9) containing feeding roll (8)
Etc. The delivery mechanism (9) and the delivery roll (8) will be described in detail.
A drive shaft (10) having a hexagonal cross-section is horizontally rotatably mounted on the machine body in the left-right direction, and a pay-out roll (8) is attached to the drive shaft (10). Further, a linking rod (13) is installed over the link mechanism (11) for repeatedly driving the planting arm (2) up and down and the arm (12) of the drive shaft (10). Drive shaft (1
0) and the feeding roll (8) are repeatedly driven reciprocally around the horizontal axis so that the fertilizer entering the recess (8a) provided on the outer periphery of the feeding roll (8) is scraped off by the brush (14). It is delivered to both sides alternately.

A feeding case (6) for accommodating the feeding roll (8)
A pair of front and rear funnel parts (17A) and (17B) are formed on the
A grooving device (15) is attached to the front funnel (17A) side via a downflow hose (18). This grooving device (15) is integrally fixed to the grounding float (19) together with the grooving plate (16). As the rice transplanter moves, the grooving device (15) is positioned at a predetermined depth below the mud surface to form a fertilizer dropping groove. While being formed, the fertilizer fed from the front chamber of the fertilizer storage hopper (7) partitioned by the partition plate (20) is guided into the groove. This grooving device (15) is provided on the side of each planting row, and is applied to the work for performing shallow fertilization with a fertilizer dropping depth of about 5 cm below the mud surface. In the figure, (21) is a shutter member that swings back and forth, and has a tilted posture and a vertical posture in which fertilizer dropped from the feeding roll (8) is supplied only to one of the front and rear funnel parts (17A) and (17B). It is possible to switch to a vertical position in which the fertilizer from the front chamber is distributed to the front funnel part (17A) and the fertilizer from the rear chamber is distributed to the rear funnel part (17B).

Next, the case of performing deep-layer fertilization by pushing one fertilizer for each two rows of planting deep under the mud (15 cm) will be described.
As shown in FIGS. 3 and 4, the ground float (1
9) Position the grooving rotary body (22) for performing deep fertilization in the rear bifurcated branch space, and use this grooving rotary body (2
2) to the hose (1) flowing down from the rear funnel (17B)
It is configured to supply fertilizer via 8).

As shown in FIGS. 1 and 2, the groove cutting rotary member (2
2) is a resin rotor body (23) in which a plurality of fertilizer receiving receiving portions (23a) are formed at equal pitches on the outer peripheral surface, and screws are integrally fixed to the rotor body (23) from both side surfaces. Metal side walls (24), (24) and the metal side walls (24), (24)
A rotary drive shaft (25) fixed to one of the rotary drive shafts, a cam member (26) externally fitted to and fixed to the rotary drive shaft (25), and the rotary body main body. It comprises an extruding tool (27) supported at equal pitches in the circumferential direction with respect to (23). The push-out tool (27) supports a piston (28a) for pushing the fertilizer placed on the receiving portion (23a) and the piston (28a), and supports the cam member (26) at the axial center position of the rotating body. ) Abuts piston rod (28b)
And a spring (29) for pressing and pushing the extruded body (28) against the cam member (26).

With the above configuration, when the rotary drive shaft (25) rotates, the pusher tool (27) rotates integrally with the rotary body (23).
At this time, since the cam member (26) is fixed, the push-out body (28) moves along the outer peripheral surface of the cam member (26) and the radial direction of the push-out body (28) with respect to the rotor body (23). Move forward and backward. Therefore, when the receiving part (23a) is located on the mud surface and receives fertilizer, the pusher body (28) is retracted to the back side of the receiving part (23a) and at a predetermined position within the mud surface. In the case of pushing out, it is possible to switch to the pushing posture in which the receiving portion (23a) projects from the discharge opening end. The left and right side walls (24), (24) have a large diameter that extends further outward than the receiving portion (23a), and the rotating body (2
Form an annular recessed groove (a) with the outer peripheral surface of 3) as the bottom surface,
In the rotation phase of the rotating body (22), the fertilizer is prevented from leaking out of the receiving part (23a) over approximately 160 ° from the receiving position to releasing the fertilizer at the receiving part (23a). like,
An arc-shaped recessed groove is provided with an arc-shaped lid body (30) covering the outer peripheral surface of the rotating body (22) from a receiving position of fertilizer fed out from the upper specific charge storage hopper (7) to a lower fertilizing position. It is located in (a). The arc-shaped lid body (30) is hung with its upper end fixed to the vertical link (32A), and the fixed end and the tip portion located in the recessed groove are capable of relative refraction as the rotating body (22) moves up and down. It is made of steel or the like. Also, the lower end of this arc-shaped lid (30) is bent downward,
The downward projecting portion (30a) has a scraper function of scraping off the mud that has entered and accumulated in the annular recessed groove (a), and is held by the receiving portion (23a) and the arc-shaped lid body (30). Before the fertilizer is extruded, mud is scraped off from the annular recessed groove (a) to ensure the extruding of the fertilizer.

Rotating body for groove cutting (22) 4 links (3
The bracket (37) is cantilevered toward the rear with respect to the vertical link (32A) in 2) and the fertilizer (37) is used to drop fertilizer into the receiving portion (23a). 18) A scraper (38) is attached to support the lower end and remove the mud in the annular recessed groove (a). This scraper (38) is installed with its lower end in contact with the bottom surface of the annular recessed groove (a). The lower end of the scraper is brought to the raised position immediately after the fertilizer is pushed out, and the fertilizer is pushed out while the fertilizer is pushed out. ), And has a function of scraping off the mud that is attached to the annular recessed groove (a) and is carried. or,
The catching portion (23a) acts on the front side of the piston (28a) and the bottom surface of the annular recessed groove (a) to scrape off the adhering mud on the front side where the fertilizer is lifted on the mud surface after receiving the fertilizer and receives the fertilizer. A brush (39) is provided, the annular recessed groove (a) is cleaned by the brush (39) and the scraper (39), and the receiving portion (23
It is configured to make it easier to add fertilizer to a).
In addition, reference numeral (31) in the figure denotes a seal material for preventing dust and the like from entering the sliding surface of the push-out body (28) with respect to the rotary body (23).

Next, a structure for supporting and driving the rotator (22) for grooving will be described. As shown in FIGS. 3 and 4, the groove cutting rotary body (22) is a vertical link (32A) in a quad link (32).
It is rotatably supported at the lower end, is attached to the seedling planting device so as to be able to move up and down, and receives power transmission via the chain transmission mechanism equipped in the vertical link (32A). On the other hand, the rear end of the lower link (32B) is pivotally supported on the vertical link (32A) so that the rear end of the lower link (32B) can be relatively swung with the horizontally oriented transmission shaft case (33) as a relay, and the front end of the lower link (32B) is planted. It is pivotally supported by a crank drive shaft (35) that is integrally rotatable with the arm (2) drive crank shaft (34). This crank drive shaft (35) also serves as a support member, and the lower link (32
It is the fulcrum of vertical swing of B). With the above structure, the power supplied from the drive crank shaft (34) is generated by the crank drive shaft (35), the chain transmission mechanism in the lower link (32B), the lateral transmission shaft case (33), and the vertical link (32A).
Is transmitted to the rotary drive shaft (25) through the chain transmission mechanism of (1) and drives the groove cutting rotary body (22). The cam member (26) is in a fixed state in spite of the rotational operation of the rotary drive shaft (25) by engaging with the boss extended from the vertical link (32A).

[Another embodiment] Although the receiving portion (23a) is formed in a state of being recessed in the outer peripheral surface of the rotating body (23), the peripheral wall is raised and a receiving space is formed therein. However, it is not limited to the structure of the drawing.

As the extruding tool (27), a piston type extruding body (2
Other than the one using 8) and the cam member (26), a simple cylinder or the like may be used, and the present invention is not limited to the above embodiment.

The scraper (38) may be installed at a position just before the fertilizer is pushed out from the receiving portion (23a), and is not limited to the position in the above embodiment.

R that bulges outward from the tip surface of the piston (28a)
It may be formed to have a surface.

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]

The drawings show an embodiment of the fertilizer application apparatus according to the present invention. Fig. 1 is a vertical sectional side view of a grooving rotary body, Fig. 2 is an enlarged vertical front view of an essential part of the grooving rotary body, and Fig. 3 is a seedling. FIG. 4 is a partially cutaway side view showing a planting device and a fertilizer application device, and FIG. 4 is a plan view showing a transmission structure for a groove cutting rotary member. (7) …… Fertilizer storage hopper, (22) …… Rotator for grooving, (23a) …… Reception part, (27) …… Extruder, (30)
...... Arc-shaped lid, (a) …… Annular recessed groove.

Claims (2)

[Claims] 1. A receiving portion (23a) for receiving fertilizer fed from a fertilizer storage hopper (7) is formed on an outer peripheral surface of a grooving rotary body (22), and the receiving portion (23a) is formed. An arc-shaped lid (30) that covers the outer circumferential surface of the formed rotator (22) for grooving from the receiving position of fertilizer fed from the fertilizer storage hopper (7) above to the fertilizing position below. With the provision
An extruding tool (27) for extruding the fertilizer placed in the receiving portion (23a) at a predetermined position in the mud is provided.
The fertilizer application device configured so that the tip extruding surface acting on the fertilizer in 7) protrudes from the outlet opening end of the receiving portion (23a) in the extruding action posture. 2. An annular groove (a) in which a plurality of receiving portions (23a) for receiving fertilizer fed from the fertilizer storage hopper (7) are formed on the outer peripheral surface of the grooving rotary body (22). ) A plurality of receiving parts (23
An arc-shaped lid (which covers the outer peripheral surface of the groove cutting rotary body (22) formed with a) from a receiving position of fertilizer fed from the fertilizer storage hopper (7) above to a fertilizing position below ( 3
0) is provided, an extruding tool (27) for extruding the fertilizer placed in the receiving portion (23a) at a predetermined position in mud is provided, and the rotating body for groove cutting (22) is provided. A fertilizer application device provided with a scraper (38) for scraping off mud that enters the annular recessed groove (a) as it rotates.