JPH0640774B2 - 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 the 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 by using a grooving device and then naturally dropped into the groove, even if the groove is formed in the case where the mud surface is a soft ground with a lot of water content, the groove is immediately formed in the groove. It was difficult to drop the fertilizer at a predetermined depth position below the mud surface because the mud with high fluidity would flow in and fill the groove.

An object of the first invention is to change the grooving device itself to a rational one so as to provide one that can surely perform fertilization work even in a weak field, and an object of the second invention is to provide the first invention.
It is a point to provide a device having a new groove forming function adopted in the invention, which is provided with a unique form to which other functions can be added.

[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 storage hopper from the receiving position of the fertilizer fed from the upper fertilizer storage hopper over the point to provide an arc-shaped lid body, and the fertilizer placed in the receiving portion mud The present invention is characterized in that an extruding tool for extruding at a predetermined position is provided, and the characteristic configuration according to the second invention is that a plurality of receiving portions for receiving the fertilizer fed from the fertilizer storage hopper are provided for the grooving rotation. With respect to the bottom surface of the annular recessed groove formed on the outer peripheral surface of the body, the points formed at a predetermined pitch, and the outer peripheral surface of the groove cutting rotary body having the plurality of receiving portions are provided above the fertilizer storage hopper. From the receiving position of the fertilizer that is delivered more to the fertilizing position below A point of providing a circular arc-shaped lid, a point of providing an extruding tool for pushing the fertilizer placed in the receiving portion at a predetermined position in mud, and a receiving portion on the side wall forming the annular recessed groove A notch that is recessed to the axial center side of the rotary body is provided at a portion radially outward from the installation position, and the function and effect thereof are as follows.

[Operation of the 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), The receiving part (23a) that receives and holds fertilizer at the receiving part (23a) that has reached the mud surface as the groove rotating body (22) rotates, and rotates while holding the fertilizer.
However, during the period from the fertilizer receiving position to the predetermined position in the mud surface, the arc-shaped lid (30) prevents the fertilizer from leaking out,
When it reaches a predetermined position on the mud surface, the fertilizer is pushed into the mud surface by the pushing tool (27).

[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),
By forcibly extruding at the predetermined position, reliable fertilization work can be performed regardless of the field hardness. However, as a method for bringing in and releasing fertilizer to a predetermined depth by using the rotator (22) for grooving, JP-A-51-128913 and JP-A-51-12.
There is one disclosed in Japanese Patent Publication No. 2011, but the one of the present invention is further provided with an extruding tool (27), and while the open end of the receiving portion (23a) receives fertilizer and rotates in mud. Even if mud is adhered and blocked, it can be forcibly extruded by the extruding tool (27), so that the fertilizer does not remain in the receiving portion (23a) without being released.

[Operation and effect of the second invention] Extrusion of fertilizer by the rotating body is performed in the state described in [Operation of the first invention], but as described in the other characteristic configuration, the notch is formed in the portion corresponding to the receiving portion (23a). By forming the portion (b), as shown in FIG. 1, the grooving rotary body (22) has a shape like a gear-shaped tooth profile formed on the outer peripheral surface thereof, and the tooth profile portion forms a mud surface. It has the effect of hooking the upper straw and pushing it into the mud surface, and the position of the notch (b) is the receiving portion.
Since it is provided at a position corresponding to (23a), when the mud cross-links and receives fertilizer across the both side walls (24) of the annular recessed groove (a), reception of fertilizer is blocked by the cross-link mud. This has the advantage of suppressing the phenomenon that

As described above, this type of rotating body is a particularly effective means when dropping fertilizer deeply (about 15 cm below the mud surface).

〔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). (Four)
A seedling planting device is configured by the above, and the seedling planting device is movably connected to the machine body (not shown) via a four-link mechanism (5).

The seedling planting device is equipped with a fertilizer application device as an agricultural powder and dusting device, and this fertilizer application device intermittently repeats the fertilizer in the fertilizer storage hopper (7) and hopper (7) as shown in the figure. It is composed of a feeding mechanism (9) in which a feeding roll (8) for feeding is provided. The delivery mechanism (9) and the delivery roll (8) will be described in detail. As shown in FIG. 3, a drive shaft (10) having a hexagonal cross section is horizontally rotatably mounted in the lateral direction of the machine body of the delivery mechanism (9). The drive roll (8) from the drive shaft (10).
Is installed. Furthermore, a linking rod (13) is installed over the link mechanism (11) that repeatedly drives the planting arm (2) up and down and the arm (12) of the drive shaft (10).
Drive shaft (10) and feeding roll (8) interlocking with the planting operation of
Is repeatedly driven around the horizontal axis, and the feeding roll
The fertilizer entering the concave portion (8a) provided on the outer periphery of (8) is scraped off by the brush (14) and is squeezed out to both sides.

A pair of front and rear funnel parts (17A) and (17B) are formed in the payout case (6) that contracts the payout roll (8), and the front funnel part is formed.
A grooving device (15) is attached to the (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), and along with the movement of the rice transplanter, it 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 layer fertilization with a fertilizer dropping depth of about 5 cm below the mud surface.

Next, for every two rows of planting, apply one fertilizer deep under the mud (1
(5 cm) Explain the case of deep fertilization by pushing. Third
As shown in FIGS. 4 and 5, the groove cutting rotary body (22) for performing deep fertilization is located in the rear bifurcated space of the grounding float (19), and the groove cutting rotary body (22). On the other hand, it is configured to supply fertilizer from the rear funnel portion (17B) through the downflow hose (18).

As shown in FIG. 1 and FIG. 2, the groove cutting rotary body (22) includes a resin rotary body main body (23) having a fertilizer receiving receiving portion (23a) formed on the outer peripheral surface thereof, and The metal side walls (24) and (24) integrally fixed to the rotating body (23) from both side surfaces with screws are fixed to one of the metal side walls (24) and (24) so as to rotate integrally. Rotating drive shaft (25) and a cam member (26) externally fitted to and fixed to the rotary drive shaft (25).
And an extruding tool (27) supported on the rotating body main body (23) at an equal pitch in the circumferential direction. The extruding tool (2
7) is a piston (28a) for pushing out the fertilizer placed on the receiving portion (23a) and a piston (28) for supporting the piston and contacting the cam member (26) at the axial position of the rotating body. Piston rod (28b)
And an 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 extruded body is
The reference numeral (28) moves along the outer peripheral surface of the cam member (26) to perform forward and reverse movements in the radial direction with respect to the rotary body (23). Therefore, when the receiving portion (23a) is located on the mud surface and receives fertilizer, the pusher body (28) is retracted to the back side of the receiving portion (23a) and at a predetermined position within the mud surface. When pushing out, the pushing posture is changed so as to project from the discharge opening end of the receiving portion (23a). The left and right side walls (24), (24) have large diameters that are expanded further outward than the receiving portion (23a), and have an annular recess with the outer peripheral surface of the rotating body (23) as a bottom surface. Forming a groove (a),
Of the rotary transfer of the rotating body (22), the receiving part (23a) receives the fertilizer from the receiving position to the releasing position over approximately 160 °.
(23a) so as to prevent the fertilizer from leaking out, the outer peripheral surface of the rotating body (22) from the fertilizer receiving position of the fertilizer storage hopper (7) above to the fertilizer applying position below. An arc-shaped lid (30) covering the above is located in the annular recessed groove (a). The arc-shaped lid body (30) is suspended by fixing its upper end to the vertical link (32A), and the fixed end and the tip end located in the recessed groove are springs capable of relative refraction as the rotating body (22) moves up and down. It is made of steel or the like. Further, the receiving portion (23a) and the like are formed on the outer peripheral surface of the rotating body (23) at a pitch, and the circumferential length (C) of the receiving portion (23a) is a flat portion. Longer than the circumferential length (D) in (d), the receiving part (23a) when receiving fertilizer
To reduce the amount of spillage to the flat part (d),
The arc-shaped lid body (30) is prevented from being crushed by the crushing action of the arc-shaped lid body (30) while it is placed on the.

Further, a cutout portion (b) that joins with the axial center position of the rotary body is formed at a portion radially outward of the installation position of the receiving portion (23a) on the both side walls (24) [Operation and effect of the second invention] ]] Has the function as shown in the section. And as shown,
The width (A) of the bottom of the notch (b) is made larger than the width (B) of the top of the protrusion (c) so that the mud bridging between the left and right protrusions (c) can be easily dropped. In the figure, (31) is a sealing material that prevents dust and the like from entering the sliding surface of the push-out body (28) with respect to the rotary body (23).

Next, the structure for supporting and driving the groove-rotating body (22) will be described. As shown in FIGS. 3 and 4, the groove cutting rotary body
(22) is rotatably supported at the lower end of the vertical link (32A) of the four-link (32), is vertically attached to the seedling planting device, and has a chain transmission mechanism installed in the vertical link (32A). Receives power transmission through. On the other hand, this vertical link (32
A) A horizontal transmission shaft case (33) is used as a relay tool, and the rear end of the lower link (32B) is pivotally supported so that the lower link (32B) can move relative to the front end of the lower link (32B). It is pivotally supported by a crank drive shaft (35) which is rotatably connected to the shaft (34). The crank drive shaft (35) also serves as a support member and serves as a vertical swing fulcrum of the lower link (32B). With the above configuration, 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 (3).
It is transmitted to the rotary drive shaft (25) through the chain transmission mechanism (2A) 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 hose extended from the vertical link (32A).

(Other embodiment) The receiving portion (23a) is formed in a state of being recessed in the outer peripheral surface of the rotating body (23), but the receiving wall is formed by raising the peripheral wall. However, it is not limited to the structure of the drawing.

The pushing tool (27) may be a simple cylinder or the like other than the piston type pushing body (28) and the cam member (26), and is not limited to the above embodiment.

The side wall (24), the protrusion (c) provided on the outer peripheral surface of (24),
Although not shown, the groove cutting rotary body (22) may have a plowing function by outwardly bending.

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 a fertilizer application apparatus according to the present invention. FIG. 1 is a vertical sectional side view showing a groove cutting rotary body, FIG. 2 is an enlarged vertical front view of a main portion of the groove cutting rotary body, and FIG. FIG. 4 is a partially cutaway side view showing the seedling planting device and the fertilizer applying device, and FIG. 4 is a plan view showing a transmission system to the groove cutting rotary member. (7) …… Fertilizer storage hopper, (22) …… Rotator for grooving, (23
a) …… Reception part, (24) …… side wall, (27) …… extruder, (30)
…… Arc lid, (a) …… annular recessed groove, (b) …… notch.

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. Formed rotator for grooving (2
The outer peripheral surface of 2) is provided with an arc-shaped lid body (30) that covers the fertilizer storage position from the fertilizer storage hopper (7) above to the fertilizer application position below, and the receiving portion ( twenty three
a) A fertilizer applicator provided with an extruding tool (27) for extruding the fertilizer placed in (a) at a predetermined position in mud. 2. A rotary body (22) for grooving, comprising a plurality of receiving portions (23a) for receiving fertilizer fed from a fertilizer storage hopper (7).
With respect to the bottom surface of the annular recessed groove (a) formed on the outer peripheral surface of, the outer peripheral surface of the groove cutting rotary body (22) formed at a predetermined pitch and having a plurality of receiving portions (23a) formed thereon, An arc-shaped lid (30) is provided to cover the fertilizer fed from the upper fertilizer storage hopper (7) from the receiving position of the fertilizer to the lower fertilizing position, and is placed in the receiving portion (23a). An extruding tool (27) for extruding the fertilizer which has been used at a predetermined position in the mud is provided, and the annular groove
Notch that is recessed to the axial center side of the rotating body at a portion radially outward from the installation position of the receiving portion (23a) on the side wall (24) forming (a)
A fertilizer applying device (b).