JPH03180111A - Fertilizing working machine of moving agricultural machine - Google Patents

Abstract

PURPOSE:To prevent root of crop from injuring because of driving loci of nozzles free from jig-jag movement and surely enable fertilization by arranging plural nozzles in a straight line to forward direction of fertilizer. CONSTITUTION:Crank arms 25 and 27 are rotated by operation of a crank operating part 20 and nozzles 30 pivoted in crank arms 25 and 27 thereof is driven to nearly upper and lower directions and top thereof is driven into a soil to feed the fertilizer into soil. In this case, locus fed into soil of fertilizer also becomes one straight line to forward direction, because plural nozzles 30 are arranged in a straight line to forward direction of working machine. Since crank arms 25, 25, 27 and 27 are arranged while putting a nozzle group among these crank arms and further crank working parts 20 and 20 are arranged while putting these crank arms among these crank working parts, structure of working machine becomes tough and stable fertilization having good balance is carried out, accompanied by a moving agricultural machine.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a fertilizer application machine that is used by being attached to a mobile a-machine, and specifically relates to a fertilizer application machine that applies fertilizer to rhizome crops such as asparagus. Regarding the arrangement of topdressing nozzles, etc.

(b) Conventional technology Asparagus, which is a rhizome crop, is usually cultivated in fields for 5 to 10 years, harvested from March to May, and fertilized on the ground after harvest and during harvest preparation. However, asparagus has few roots on the surface layer, mainly located 10 to 30 cm below the surface layer, so even if fertilizer was applied to the surface layer, the fertilization efficiency was not very good. Therefore, a method of injecting fertilizer by driving a nozzle into the subterranean layer is also used.

(C) Problems to be Solved by the Invention By the way, as mentioned above, the fertilizer application machine that applies fertilizer by driving the nozzle into the subterranean layer is usually attached to the rear of a mobile machine, such as a tractor, to perform the fertilizer application work. It is necessary to balance the traveling speed of the tractor and the timing of driving the nozzle. If the balance is poor, excessive force will be applied to the nozzle. Especially in hard fields with roots, it is necessary to drive the nozzle about 30 cm below the surface layer. The work equipment itself requires a certain amount of strength to go. Furthermore, considering the tension of the roots of rhizome crops such as asparagus, it is desirable to be able to apply fertilizer in a straight line while maintaining a certain distance from the crop.

Therefore, an object of the present invention is to provide a fertilizer application machine that can apply fertilizer in a straight line at a constant distance from crops and has the strength to withstand driving a nozzle 30 cm below the soil layer.

(d) Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances.
a crank arm (25) which is attached to the holder and has a nozzle (30) for supplying fertilizer etc. into the soil, and which is interlocked and connected to the crank actuating part (20) and drives the nozzle (30) in a substantially vertical direction; , (27), at least one nozzle group (30) having a plurality of nozzles (30) arranged substantially in a straight line in the traveling direction of the working machine (2). ), (30) and the nozzle group (30), (3
The crank arm (25
), (25), (27), (27), and the crank operating portion (20) arranged to sandwich these crank arms (25), (25), (27), (27); (2
0).

(n) Based on the structure above the function, the mobile agricultural machine (1) is combined with the fertilizer application machine (
When fertilization work is carried out in a field with 1) attached, the operation of the crank actuating part (20) is linked to the actuating part (20).
The connected crank arms (25) and (27) rotate,
A nozzle (30) pivotally supported by these crank arms (25), <27) is driven approximately vertically, and its tip is driven into the soil to supply fertilizer into the soil.

In this case, since the plurality of nozzles (30) are arranged substantially in a straight line in the traveling direction of the working machine (2), the supply trajectory of the fertilizer into the soil also becomes substantially in a straight line in the traveling direction. In addition, crank arms (25), (25), (27), (27), and further these crank arms (25) (25), (2
7) Crank operating part (20) across (27),
(20), the structure of the working machine (2) becomes strong and stable fertilization is performed in a well-balanced manner as the mobile agricultural machine (1) moves.

Note that the symbols in parentheses are used to refer to the drawings and do not limit the configuration in any way.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the fertilizer application machine 2 has a top link 15.
It is attached to the rear of the tractor 1 so as to be movable up and down by a three-point link 15 consisting of a and two lower links 15b. The outer shape of the working machine 2 is approximately box-shaped, and a crank operating section 20 and a crank operating section 2 are provided at the rear thereof.
A nozzle 30 is disposed connected to the nozzle 30 and driven substantially vertically to discharge fertilizer into the ground. In addition, the work'ja
A transmission case 12 having an input shaft 11 interlocked and connected to the PTO shaft of the tractor 1, a distribution valve 13 for distributing fertilizer to the nozzle 30, etc. are disposed at the front of the tractor 2.

The structure of the working machine 2 will be further explained with reference to FIGS. 1 to 3. A rectangular front frame 16 is provided at the front, and lower link frames extend vertically downward from the left and right sides of the frame 16. A lower link support pin 18b is fixed to the outside of the lower end of each frame 17, and a top link support pin 18a is fixed to the center of the lower part of the front frame 16. These support pins 18a and 18b are connected to the top link 15a and lower link 15b of the tractor 1 described above.

Furthermore, four upper frames 19a are fixed to the upper part of the front frame 16 at approximately equal intervals and extend in parallel toward the rear of the work equipment 2. The lower frame 19b extends horizontally. As shown in FIG. 2, a crank operating portion 20 is fixed vertically across the rear ends of the upper frame 19a and the lower frame 19b, and as shown in FIG. There are four locations arranged at approximately equal intervals.

The crank operating portion 20 has a rectangular parallelepiped crankcase 20a.
A shaft 22 is provided near the upper end of the case 20a, passing through the case 20a, and a sprocket 23 is attached to one end of the shaft, and a crank arm upper 25 is attached to the other end. .

On the other hand, there is also a shaft 2 near the lower end of the crankcase 20a.
6 is provided, one end of the shaft 26 extends in the same direction as the direction in which the upper crank arm 25 of the shaft 22 provided near the upper end is attached, and the lower crank arm 27 is attached. The length of these upper and lower crank arms 25 and 27 is approximately 30 cm. Also, crank case 2O
Inside a, sprockets 21a and 21b are attached to the upper and lower shafts 22 and 26, respectively, and a chain is wound between these sprockets 21a and 2ib.

In addition, the upper crank arm 25 and the lower crank arm 27
A nozzle arm 29 is pivotally mounted across the tip of each of the nozzle arms 29, and when the upper and lower crank arms 25 and 27 rotate synchronously by the operation of the crank operating section 20, the nozzle arms 29 are driven approximately in the vertical direction. be done. Further, a flexibility mechanism 32 is provided at the pivot point between the nozzle arm 29 and the lower crank arm 27, and the flexibility mechanism 32 allows the nozzle arm 29 to freely swing back and forth in the traveling direction. has been done. Further, the nozzle arm 29 can be divided into a base end portion 29a and a tip end portion 29b,
The distal end portion 29b is located below the lower crank arm 27 and is fixed to the base end portion 29a with a bolt 33. A nozzle 30 for discharging fertilizer into the subterranean layer is detachably fixed along the nozzle arm 29, and like the nozzle arm 29, the nozzle 30 can be divided into a base end portion 30a and a tip end portion 30b. The distal end portion 30b extends downward longer than the distal end portion of the nozzle arm 29, and has a length that is approximately in contact with the ground surface when the upper and lower crank arms 25 and 27 are positioned horizontally to the ground surface. It is. Furthermore, ribs 31 are fixed to the tip portion 30b of the nozzle 30 at the front and rear in the direction of movement of the working machine 2, to reduce the burden on the nozzle tip portion 30b when the nozzle 30 is driven into the ground. Further, a joint 35 is attached to the tip of the nozzle base end portion 30a, into which a hose 36 for injecting fertilizer is fitted.

The nozzles 30 interlocked and connected to these crank operating parts 20 are as shown in FIG.
Two nozzles 30 are arranged close to each other on the left and right sides, and the two nozzles 30 on the crank arm are arranged so as to sandwich the two nozzles 30 therebetween.
5.25 and a lower crank arm 27.27 are arranged, and these crank arms 25, 25, 27.
A crank operating section 20 is provided so as to sandwich 27 therebetween. That is, in the rear view of the working machine 2, there are groups of nozzles 30 on the left and right, and drive systems for the nozzles 30 on both the left and right sides are arranged so as to sandwich the nozzles 30 of the negative group.

On the other hand, the power unit for driving these crank actuating units 20 and force-feeding fertilizer to the nozzle 30, that is, the transmission case 12 having the input shaft 11 interlocked and connected to the PTO shaft of the tractor 1, performs the above-mentioned work. It is attached to a horizontal frame 14 extending from a lower link frame 17 hanging from the left and right sides of a front frame 16 of the machine 2. The transmission case 12 has output shafts A and B, and subrockets 40a and 40b are attached to both shafts A and B. Axis A is a countershaft 41 provided extending in the left-right direction of the work machine 2.
The large-diameter sprocket 41a attached to the countershaft 41 and the shaft A
A chain is wound around the sprocket 40a attached to the sprocket 40a. On the other hand, the shaft B is used to drive two paste pumps 42 that pump the fertilizer stored in the tank to the nozzle 30 via the distribution valve 13, and is interlocked and connected to the pumps 42.

Further, the countershaft 41 includes a crank operating portion 2.
Four sprockets 41b for driving the crankcase 20a are attached, and a chain 24 is wound between them and a sprocket 23 provided on the outside of each crankcase 20a. Then, as the countershaft 41 rotates, the crank operating section 20 operates, and the crank arm is rotated.
The lower portions 25 and 27 rotate, and the nozzle 30 is driven approximately in the vertical direction. In this case, the phase differences of the four nozzles 30 are adjusted to differ by 90 degrees in terms of the angle of the crank arm 25 when viewed from the side of the working machine 2, as shown in FIG. Therefore, as the counter shaft 41 rotates, instantaneously, only one of the nozzles 30 is driven into the ground, and the other nozzles 30 are either pulled out from the ground or placed on the ground. Thus, the balance of the working machine 2 is maintained during traveling work.

Further, the paste pump 42 is connected by a suction hose 5 to a paste tank 3 that stores fertilizer loaded on the front part of the tractor 1 shown in FIG. There is also piping between the inlet and the inlet. The pump 42 is connected to the transmission case 1.
The fertilizer in the paste tank 3 is pumped to the distribution valve 13 by the rotation of the shaft B of 2.

Further, the distribution valve 13 is connected to the working machine 2 as shown in FIG.
Two distribution valves 13, 13 are installed vertically on the front frame 16 of the system, and each distribution valve 13, 13 has eight discharge ports. The distribution valve 13 has a rotating shaft protruding outward, a sprocket is attached to the protruding part of the rotating shaft, and a chain is wound between the sprocket attached to the counter shaft 41 and a small sprocket. In conjunction with the rotation of the counter shaft 41, the fertilizer pumped from the paste pump 42 is successively distributed to eight discharge ports. Further, as shown in FIG. 4, two adjacent discharge ports of each distribution valve 13 are short-circuited and connected to a fixed joint 43 provided at the top of the front frame 16 of the working machine 2. It is plumbed. The inlet of the fixed joint 43 is bifurcated, and two distribution valves 13 are connected to each other.
The distribution of fertilizer by these two distribution valves 13 is synchronized. Further, a hose 36 is connected between the outlet of the fixed joint 43 and a joint 35 provided at the top of the nozzle 30, and the hose 36 is made of a flexible material.

Further, the hose 36 has one end connected to a fixed joint 43.
Since the other end is connected to a joint 35 provided at the top of the nozzle 30, the top of the nozzle 30 moves up and down and back and forth with the work, so the hose 36 also undulates with the movement. becomes. As a result, there is a possibility that the hose 36 may become entangled with other parts, so a pipe support guide 37 as shown in FIG. 2 is provided as a measure to alleviate this problem. The support guide 37 includes an arm 37a and an arm 37.
The base end of the arm 37a is pivotally supported on the upper frame 19a of the working machine 2 and is configured to be freely rotatable in the front and back direction. I support 36.

Furthermore, wheels 45 are attached to the left and right sides of the working machine 2, and a safety frame 46 is provided at the rear of the working machine 2.

Since this embodiment has the above-described configuration, when applying fertilizer below the soil to rhizome crops such as asparagus planted in a field, first, the fertilizer application machine 2 is attached to the tractor 1, and the fertilizer is applied in a straight line. The tractor 1 straddles the planted crops, and the working machine 2 is lowered and landed on the ground to travel.

Then, as the tractor 1 travels, the PTO shaft rotates,
Transmission case 12 of work machine 2 interlocked and connected to the PTO shaft
Since the input shaft 11 of the transmission case 12 rotates, the output shafts A and B of the transmission case 12 also rotate. When the output shaft A rotates, the counter shaft 41 rotates via the sprocket 40a, the chain, and the large diameter sprocket 41a. The rotation of the countershaft 41 drives the four crank operating parts 20 via the chain and sprocket 23, and the upper crank arm 25 and lower crank arm 27 attached to the malfunctioning part 20 are rotated.
are interlocked and synchronously rotated to drive the nozzle 30 approximately vertically in a vertical position.

On the other hand, the output shaft B of the transmission case 12 is connected to the paste pump 42.
The paste pump 42 is driven by the rotation of the output shaft B, and the paste fertilizer flowing from the paste tank 3 loaded at the front of the tractor 1 to the rear of the tractor by the rehose 5 is transferred to the paste pump 12. It reaches the suction part and is force-fed to the distribution valve 13 from the discharge port. The distribution valve 13 is interlocked with the rotation of the counter shaft 41 and distributes the paste fertilizer to eight discharge ports. The paste fertilizer discharged from the outlet of the distribution valve 13 is transferred to the front frame 1.
The water passes through the nozzle 30 through a fixed joint 43 fixed to the nozzle 6, a hose 36, and a joint 35 attached to the nozzle 30, and is ejected from a hole provided in the tip portion 30b of the nozzle 30. At this time, the crank operating unit 20 and the distribution valve 13 are configured so that their operating timings are synchronized via the countershaft 41, chain, and sprocket, so that the tip of the nozzle 30 is in the underground 30c.
Paste fertilizer is injected to a depth of about 1.5 m.

Further, since a flexibility mechanism 32 is attached to the pivot point between the nozzle arm 29 and the lower crank arm 27, the nozzle 30 rotates vertically on the ground, and after penetrating into the ground, the nozzle 30 rotates vertically. It tilts by the speed difference in the front and rear direction due to the traveling speed and the circular motion of the nozzle 30, and returns to neutral on the ground again. In this case, if the speed in the traveling direction of the upper and lower 25.27 half-turns of the crank arm having a length of about 30C11 matches the speed of the tractor 1, the nozzle 30 will be vertical when it is at its maximum depth of 30 cm underground.

In addition, the four nozzles 30 are driven in alternately, but since the wheels 45 are mounted on both the left and right sides of the work machine 2, the work machine 2 is affected by the penetration resistance reaction force caused by the drive.
Rolling can be prevented and the driving depth can be maintained constant.

(G) As described in detail, according to the present invention, a plurality of nozzles (3
0) is arranged approximately in a straight line in the direction of movement of the fertilizer application machine (2), so work! If you run (2) straight along a rhizome crop such as asparagus and drive the nozzle (30) into the ground to apply fertilizer, the position of the nozzle (30) will not be zigzag, so the crop will grow. Fertilizer can be reliably applied to the targeted location without damaging the roots. Also, nozzle (30)
Since the upper and lower crank arms (25), (27), and the crank operating part (20) are arranged with the upper and lower crank arms (25) and (27) sandwiched between the
It is possible to obtain enough strength to apply fertilizer by driving in 0).

[Brief explanation of drawings]

FIG. 1 is a side view of the fertilizer application machine mounted on a tractor, FIG. 2 is a side view of the fertilizer application machine, and FIG. 3 is a rear view of the fertilizer application machine. FIG. 4 is a diagram showing the state of connection between the paste pump, the distribution valve, and the nozzle. 1... Tractor (mobile agricultural machine) 2... Fertilizer application machine 20... Crank operation part, 25... Upper crank arm 27... Lower crank arm 0... Nozzle

Claims (1)

[Scope of Claims] 1. A crank arm that is attached to a mobile agricultural machine and has a nozzle for supplying fertilizer, etc. into the soil, and that is interlocked and connected to a crank operating section and drives the nozzle in a substantially vertical direction. A fertilizer application machine comprising: at least one nozzle group having a plurality of nozzles arranged substantially in a straight line in the direction of movement of the work machine; and the crank arm provided to sandwich the nozzle group; A fertilizer application machine for a mobile agricultural machine, comprising: the above-mentioned crank actuating section arranged so as to sandwich these crank arms.