JPH0724016Y2 - Point fertilizer - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to an improvement of a point fertilizer device which is mounted on a traveling machine body to apply fertilizer to the soil in spots while traveling in a field. is there.

Conventional technology and problems to be solved Conventionally, as a point fertilizer device for applying pointwise fertilizer such as liquid fertilizer such as paste fertilizer or liquid fertilizer or solid fertilizer such as granules to paddy fields or fields, Japanese Patent Publication No. KAISHO 59-175810 is known. The former one is one in which the fertilizer application pipe is moved up and down by a link mechanism to perform point fertilizer application, and the fertilizer application pipe always enters and retreats at a constant angle in the soil by the link mechanism, but the soil is moved by the forward action of the machine. After being fertilized, a large fertilizer pipe trace is formed in the soil after fertilization, which causes the fertilizer to float up and run off, cut off the root hairs of the crops that have grown due to this drag phenomenon, and muddy soil resistance to the fertilizer pipe. However, there is a problem that power loss and bending of the fertilizer application pipe are caused by increasing the amount of water.

In the latter, a guide frame in the front-rear direction is provided in the lower part of a lifting body that moves up and down by a link mechanism, and a fertilizer application pipe is attached to the guide frame so that it can slide back and forth. When invading, the fertilizer application tube slides backward on the guide frame with the progress of the machine while keeping the invaded state, and when the fertilizer application tube escapes above the soil, the fertilizer application tube is guided by the return spring. It is designed to slide back to the front end of the frame. In this case, there is no dragging phenomenon of the fertilizer application pipe in the soil, but since both the vertical movement mechanism and the slide mechanism of the fertilizer application pipe are required, there is a drawback that the entire device is complicated and large.

Therefore, the present invention is a former point-type fertilizer apparatus in which the fertilizer application pipe is directly moved up and down by a link mechanism, and is devised so as to eliminate the drag phenomenon of the fertilizer application pipe in the soil. .

Means for Solving the Problems The present invention relates to a point fertilizer apparatus mounted on a traveling machine body and adapted to fertilize fertilizer into the soil while traveling in a field. The fertilizer tube and one of the crank arms are pivotally attached to a pair of crank arms and configured to move up and down while maintaining the vertical posture.
A fertilizer pipe is allowed to swing in the front-rear direction within a predetermined range, and the fertilizer pipe is returned to the neutral position after the swing by elastically returning to the neutral position of the swing region via an interchange mechanism having an ammunition machine. It is intended to solve the above-mentioned problems by connecting the fertilizer application pipes to the soil so that the intrusion loci and the retreat loci of the fertilizer application pipes are corrected so as to approach and overlap each other.

Action When fertilizer application is performed while the machine is running, the fertilizer application pipe moves up and down while maintaining the vertical posture by the link mechanism composed of parallel cranks, and the tip of the fertilizer application tube enters the soil. The fertilizer is applied at the lowest position, but the fertilizer application pipe swings backward due to the soil resistance in the front when the soil penetrates into the soil, and swings forward due to the soil resistance in the rear when it escapes from the soil. . For this reason, the inflow path and the retreat path of the fertilizer application pipe into the soil are corrected so that they approach and overlap each other. Can be made as small as possible.

Embodiments The structure of the present invention will be described with reference to an embodiment shown in the drawings. Reference numeral 1 is a fertilizer tank mounted on a traveling body A, in which fluid fertilizer such as paste fertilizer is stored. ing. And on the toolbar 2 of the traveling body A, the point fertilizer B
Are mounted via the adjusting mechanism 3 so as to be adjustable up and down.
Reference numeral 4 denotes a transmission case which is a power source of the point fertilizer apparatus B, and power is branched from the transmission case 4, one is transmitted to the fertilizer pump 5 and the other is transmitted to the counter shaft 6. Further, from the counter shaft 6, the switching valve 7 and the upper and lower drive shafts 8 and 9 rotatably supported with respect to the fertilizer application frame F.
It is designed to be branched and transmitted. The switching valve 7
Has eight discharge pipes 7a corresponding to the number of fertilizer pipes to be described later, each of which is communicatively connected to the upper end opening of each fertilizer pipe through a flexible hose H. When each of the fertilizers has reached the bottom of the soil, it discharges a certain amount of fertilizer from the outlet a at the bottom of the fertilizer application pipe.

10 and 11 are a pair of fertilizer tubes attached to the frame F,
The fertilizer tubes 10 and 11 are configured to move up and down through a link mechanism M such as a parallel crank mechanism while maintaining a substantially vertical posture. Further, the fertilizer application pipes 10 and 11 are configured to be swingable back and forth within a predetermined range through a flexible mechanism N and elastically return to a neutral position of a swing region.

The one shown in the figure is a crank arm of the same length fixed to the upper and lower drive shafts 8 and 9 by a shaft fixing member 12 with their phases changed by 180 degrees.
The pivoting tip side of 13, 13, 14 and 14 is connected to the pivot shafts 15 and 16 and the fertilizer tube 10,
The fertilizer pipes 10 and 11 are pivotally connected to the fertilizer pipes 10 and 11 in a step-like manner via brackets 17 and 18 fixed to the lower bracket 11, and the lower bracket 18 is provided with a long hole 19 and a return spring 19 in the front-rear direction which constitute the interchange mechanism N.
21 is provided, and the fertilization pipes 10 and 11 are mounted on the upper pivot shaft 15 by loosely fitting the pivot shaft 16 in the slot 19 with play.
It is possible to swing back and forth within the range of the elongated hole 19, and both ends of the return spring 21 wound around the spring stopper 20 protruding from the lower bracket 18 are lower pivotal supports. The shaft 16 is sandwiched and extended downward in a fork shape, and the extended end portion thereof is provided in a stopper 22 provided immediately below the central portion of the elongated hole 19 (the neutral position of the swinging region of the fertilizer application pipe). On the other hand, they are elastically abutted from both front and rear sides (see Fig. 6). Therefore, the fertilizer application tubes 10 and 11 are always urged by the return spring 21 to the neutral position of the rocking region. The return spring 21 is a predetermined spring so that the fertilizer application pipes 10 and 11 can freely swing in the front-rear direction within the elongated holes 19 by the earth pressure in the front-rear direction applied to the fertilizer application pipes 10 and 11 during fertilization work. It is set to pressure.

The symbol R in FIG. 3 indicates a fertilizer pipe when the machine is stopped.
10 and 11 show the locus of movement of the tip. 23,2 in the figure
4, 25, 26 and 27 are transmission chains, 28 is a hose connecting the fertilizer pump 5 and the switching valve 7, and 29 is a hose connecting the fertilizer tank 1 and the fertilizer pump 5.

By the way, the pair of fertilizer application tubes 10, 11 have a straight rod shape in a side view as shown in FIG. 5 and FIG. 1, and each of them is bent inward in a front view so that the tip end portion is in the machine traveling direction. The fertilizer pipes 10 and 11 can be fertilized at a central position between crop rows. Since the number of fertilizer application tubes per line is two in this way, it is possible to halve the fertilizer application pitch as compared with one.
As a result, the soil penetration speed of the fertilizer application pipes 10 and 11 can be reduced, so that vibration is reduced, fertilization efficiency is improved, and deep point fertilization can be performed in a hard field.

In addition, in the above-mentioned embodiment, the point fertilizer apparatus for the fluid fertilizer such as the paste fertilizer has been described, but the present invention can be applied to the point fertilizer apparatus for the solid fertilizer such as the granular fertilizer.

In the above-mentioned configuration, when the machine body A is driven and the point fertilizer apparatus B is started, the power is transmitted from the transmission case 4 to the chain 26.
Is transmitted to the counter shaft 6 by
24 and 23 are transmitted to the drive shafts 8 and 9 of the parallel crank mechanism to rotate the drive shafts 8 and 9 in the clockwise direction in FIG. Therefore, the crank arms 13 and 14 rotate in the same direction, and the pair of fertilizer application tubes 10 and 11 rotate up and down with a phase difference of 180 degrees while maintaining their substantially vertical postures.

On the other hand, since the power from the transmission case 4 is transmitted to the fertilizer pump 5 and the switching valve 7, respectively, the fertilizer in the fertilizer tank 1 is passed through the hose 29, the pump 5, the switching valve 7 and the hose H in order. The fertilizer is intermittently fed to the pipes 10 and 11, and when the fertilizer pipes 10 and 11 come to the lowermost position, communicates with the pump 5 and the fertilizer is discharged into the soil from the discharge port a at the tip of the fertilizer pipe and a predetermined amount of fertilizer is applied. To be done.

By the way, the fertilization is continuously performed while the machine is running, the penetration of the fertilizer pipes 10,11 into the soil is performed in the downward rotation process of the crank arms 13,14 from the machine front side,
Due to the soil resistance at the front as the aircraft progresses as it penetrates into the soil, the front half of the slot 19 of the interchange mechanism N of the fertilizer application pipes 10 and 11 centering on the upper pivot shaft 15 resists the return spring 21. Move to the rear and swing the fertilizer application tubes 10, 11 to the rear of the machine. When the fertilizer application pipes 10 and 11 reach the lowermost position, the soil resistances in the front and rear are balanced and the fertilizer application pipes 10 and 11 are in the vertical state as shown in FIG. 1, and the fertilizer is supplied into the soil. Subsequently, the fertilization pipes 10 and 11 are raised from the soil in the process of rotating from below the crank arms 13 and 14 to the rear side of the machine.
As 0 and 11 rise, the rear half of the slot 19 moves forward against the return spring 21 due to the soil resistance at the rear position, and the fertilizer application pipes 10 and 11 swing forward. When the fertilizer application pipes 10 and 11 escape from the soil, the soil resistance disappears, so that the fertilizer application pipes 10 and 11 are automatically returned to the neutral position in the rocking region of the elongated hole 19 by the return spring 21 and become in the vertical state.

As described above, the fertilizer application pipes 10 and 11 oscillate in the front-back direction due to soil resistance in the soil in the soil traveling direction and the opposite direction during the work, and the invasion trajectory and the retreat of the fertilizer application pipes 10 and 11 into the soil. The trajectories are corrected so that they approach each other, and the traces of fertilizer application to the soil are applied to the soil while the machine 1 is running, but it is as if the machine was stopped. It is possible to approximate the same as vertically fertilizing 10 and 11 to apply fertilizer. For this reason, the fertilizer application pipes 10 and 11 are not dragged in the soil during fertilization, and the fertilizer application hole formed in the field is made as small as possible, so that the fertilizer can be prevented from floating and environmental pollution caused by fertilization waste and runoff, etc. Can be eliminated. In addition, unlike the conventional fertilizer application driven by this kind of link mechanism, the fertilizer application pipe is not dragged in the soil, so it is possible to cut the root hair of the crop rooted at the corner with the fertilizer application pipes 10 and 11. The negative impact on growth is eliminated. Further, the horsepower loss due to the mud resistance is reduced, and it is not necessary to further reinforce each part of the fertilizer application pipes 10 and 11 and the attachment frame F of the point fertilizer B, and the slip is reduced.

In FIG. 1, phantom lines a and b indicate the locus of entry of the fertilizer pipes 10 and 11 when the accommodation mechanism N is not provided, that is, when the pivot shaft 16 is assumed to be fixed to the central portion of the slot 19. The evacuation locus is shown, and solid lines c and d in the figure show the intrusion locus and the evacuation locus after the correction because the accommodation mechanism N is provided.

Effects of the Invention As described above, the present invention is a point fertilizer device mounted on a traveling machine body and adapted to fertilize fertilizer into the soil while traveling in a field. The fertilizer application pipe and one crank arm are pivotally attached to a pair of crank arms and vertically moved while maintaining a substantially vertical posture. The fertilizer application pipe and one of the crank arms are allowed to swing back and forth within a predetermined range of the fertilizer application pipe. In addition, the return of the fertilizer application after swinging is performed by elastically returning to the neutral position of the swinging region through a flexible mechanism having an ammunition. Since the retracting locus and the withdrawal locus are configured to be corrected so that they approach and overlap each other, the fertilizer application pipe can be driven in and out with the soil in a substantially vertical posture, and the intrusion locus and the withdrawal locus can be overlapped or made as close as possible. Because you can The traces of fertilizer application after point fertilization can be made as small as possible to prevent floating and runoff of fertilizer. Also, since there is no dragging phenomenon of the fertilizer pipe in the soil, it is possible to eliminate the adverse effect of cutting the hair roots of crops, there is little horsepower loss due to mud resistance, and it is not necessary to reinforce each part of the device, and also This has an effect such that slip can be reduced.

In particular, the present invention can provide a point fertilizer device having a simple structure, a small size, and a practical structure because the above-mentioned remarkable effects can be obtained by improving the conventional point drive device using the link drive system. .

[Brief description of drawings]

FIG. 1 shows an embodiment of a point fertilizer application device according to the present invention. FIG. 1 is an enlarged side view of essential parts, FIG. 2 is a rear view of the same, and FIG. 3 is a schematic side view of the point fertilizer apparatus. , FIG. 4 is a rear view of the same, FIG. 5 is a side view of the point fertilizer apparatus, and FIG. 6 is a plan view of the same.
FIG. 7 is an overall side view of a state in which the point fertilizer device is mounted on the traveling machine body, and FIG. 8 is a plan view of the same. In the figure, 1 is a fertilizer tank, 4 is a transmission case, 5 is a fertilizer pump, 7 is a switching valve, 10 and 11 are fertilizer pipes, A is a traveling machine body, B is a point fertilizer device, M is a link mechanism, and N is an interchange mechanism. , A is an intrusion path into the soil, b is an evacuation path, c is an intrusion path after correction, and d is an evacuation path after correction.

Claims (1)

[Scope of utility model registration request] 1. A point fertilizer apparatus which is mounted on a traveling machine body to point fertilizer into soil while traveling in a field, wherein a fertilizer pipe of the point fertilizer apparatus is pivotally connected to a pair of upper and lower rotating crank arms. Wearing and configured to move up and down while maintaining a substantially vertical posture, the fertilizer application pipe and one of the crank arms, allow the rocking in the front-back direction within a predetermined range of the fertilizer application pipe,
In addition, the return of the fertilizer pipe after swinging is linked through a flexible mechanism having an ammunition so that the fertilizer pipe elastically returns to the neutral position of the swing region. A point fertilizer device, characterized in that the loci are configured to be corrected so that the trajectories approach and overlap each other.