JPH0742266Y2 - Fertilizer application nozzle in fertilizer application machine - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a fertilizing nozzle in a fertilizer application machine, and more specifically, a fertilizing nozzle that is driven into the soil to perform fertilization has a separable structure and a tip portion is reinforced. The present invention relates to the structure of a fertilizer application nozzle provided with a combined rib.

(B) Conventional Technology Asparagus, which is a rhizome crop, is usually cultivated in a field for 5 to 10 years, and is harvested around March to May. However, asparagus had few roots in the surface layer, mainly 10 to 30 cm below the surface layer, and the fertilization efficiency was not so good even when fertilizing the surface. Therefore, a method of driving a fertilizer by injecting a nozzle under the formation is also used.

(C) Problems to be Solved by the Invention By the way, as described above, the fertilizer application machine that drives the fertilizer application nozzle under the stratum to apply fertilizer is usually mounted on the rear part of the mobile agricultural machine such as a tractor to perform the fertilizer application machine. , There may be a difference between the traveling speed of the tractor and the speed of the fertilizer application nozzle in the traveling direction after it has been driven into the ground, which causes the nozzle to tilt before and after the traveling direction, so the nozzle needs to have strength against this bending. In particular, when driving a nozzle about 30 cm into the ground in a field where the root is tight and hard, a certain level of strength is required. In this case, if the size of the nozzle is increased, the strength is increased, but the penetration resistance at the time of driving below the formation becomes large and it becomes difficult to drive.

Also, if the nozzle is composed of a single tube, the tip of the nozzle will come into contact with the base when transported by truck with the working machine mounted on the tractor etc. when the nozzle is in the lowest position. In order not to do so, the working machine must be raised by that amount, and it becomes unstable. Particularly in a working machine having a plurality of nozzles, one of the nozzles is in a lowered state due to timing. Further, even when the tractor crosses the ridge, the tip portion may come into contact with the ridge.

Therefore, an object of the present invention is to provide a fertilizer application nozzle that can withstand a driving depth of about 30 cm below the stratum and that does not buckle even when tilted in the front-rear direction and that can be divided into upper and lower parts.

(D) Means for Solving the Problems The present invention has been made in view of the above circumstances, and
Referring to FIG. 3 or FIG. 3, the fertilizer application nozzle (30) mounted on the fertilizer application machine (2) and driven substantially vertically by the crank operating part (20) to supply fertilizer and the like into the soil. A crank arm (25) pivotally attached to the crank operating part (20) at the tip portion (30b) of the nozzle (30).
A rib (31) is fixed to the front and rear along the rotation surface of (27), and is further connected to the crank operating part (20).
Is characterized in that the base end portion (30a) and the tip end portion (30b) are divided and removable.

(E) Action Based on the above configuration, when fertilizer application is performed by the fertilizer application machine (2) in the field, the crank operating part (20) is activated as the mobile agricultural machine travels, and the crank operating part (20) is activated. The crank arm (2
5) and (27) rotate, and the fertilizer application nozzle (30) is driven almost vertically to be driven into the bottom of the stratum to supply fertilizer into the soil. In this case, even if the half-rotation speeds of the crank arms (25) and (27) and the traveling speed of the working machine (2) are made to coincide with each other, the nozzle (30 and the initial speed when driven into the ground are Since it tilts when coming out of the inside, the rib (31) fixed to the tip (30b) of the nozzle (30) cuts through the soil,
Crush. Also, when the rib (31) is driven into the ground, the tip of the rib (31) cuts out the soil.

In addition, the front end (30b) of the nozzle (30)
Carry and move the working machine (2) in a state where it is dispersed and removed from a), and attach the tip part (30b) as necessary to perform fertilization work.

The reference numerals in parentheses are for reference to the drawings and do not limit the configuration in any way.

(F) Example Hereinafter, an example according to the present invention will be described with reference to the drawings.

The fertilizer application machine 2 has a top link 15a as shown in FIG.
Also, the tractor 1 is mounted on the rear part of the tractor 1 by a three-point link 15 of two lower links 15b so as to be able to move up and down. The working machine 2 has a substantially box-shaped outer shape, and a crank operating portion 20 and a crank operating portion 20 connected to the rear portion thereof are driven substantially vertically to discharge fertilizer into the ground. Nozzle
30 are provided. Further, a transmission case 12 having an input shaft 11 that is interlocked with and connected to the PTO shaft of the tractor 1, a distribution valve 13 that distributes fertilizer to the nozzles 30, and the like are arranged at the front of the work machine 2.

To further explain the structure of the working machine 2 with reference to FIGS. 3 to 5, there is a rectangular front frame 16 on the front surface,
The lower link frame 17 extends vertically from the left and right of the frame 16 and
A lower link support pin 18b is fixed to the outside of the lower end of the front frame 16, and a top link support pin 18a is fixed to the lower center of the front frame 16. The support pins 18a and 18b are connected to the top link 15a and the lower link 15b of the tractor 1 described above.

In addition, four upper frames 19 are provided above the front frame 16.
a are fixed at substantially equal intervals, extend in parallel toward the rear of the working machine 2, and similarly from the lower part of the front frame 16 4
The lower frame 19b of the book extends horizontally. Then, as shown in FIG. 4, the upper frame 19a and the lower frame 19b.
Crank actuating portions 20 are vertically fixed to the rear ends of the two, and as shown in FIG. 3, they are arranged at four positions in the left-right direction of the working machine 2 at substantially equal intervals.

The crank operating unit 20 has a rectangular parallelepiped crankcase 20a, a shaft 22 is provided near the upper end of the case 20a so as to penetrate the case 20a, and one end of the shaft has a sprocket 23 at the other end. A crank arm upper 25 is attached to. On the other hand, in the vicinity of the lower end of the crankcase 20a, the shaft 2
6 is provided, one end of the shaft 26 extends in the same direction as the crank arm upper 25 mounting direction of the shaft 22 provided near the upper end portion, and the crank arm lower 27 is mounted.
The length of the upper and lower crank arms 25, 27 is about 30 cm. In the crankcase 20a, 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 21b, as shown in FIG. 1 (d). As shown in, the tightness of the chain is adjusted by the chain tight 28.

Further, a nozzle arm 29 is pivotally attached to the respective tip portions of the crank arm upper part 25 and the crank arm lower part 27, and when the crank arm upper part and the lower part 25, 27 rotate synchronously by the operation of the crank operating part 20. The nozzle arm 29 is driven almost vertically. Further, a flexible mechanism 32 is provided at a pivot point between the nozzle arm 29 and the lower crank arm 27. As shown in FIG. 1 (a) or FIG. 2, the interchange mechanism 32 is fixed to the nozzle arm 29, and a rectangular frame 32b is fixed on a substantially rectangular plate 32a. Further, holes are formed on the left and right sides of the frame 32b, and rods 32c that are prevented from coming off are inserted into the holes, respectively, and a spring 32d is fitted to the portion of the rod 32c inside the frame 32b. Has been done. A rotatable shaft 32e provided at the tip of the lower crank arm 27 penetrates the nozzle arm 29 between the left and right rods 32c, 32c, and a spacer 32f is fitted on the shaft 32e. Worn on the rod 32c, 32c
Being pinched by. This allows the nozzle arm 29
The lower end portion of is configured to be swingable back and forth within a predetermined range in the traveling direction. In addition, the nozzle arm 29 is a base end portion.
Can be divided into a tip portion 29b and a tip portion 29b.
b is below the lower crank arm 27 and has a base end portion 29a
Is fixed by bolts 33 as shown in FIGS. 1 (b) and 1 (c). The nozzle 30 for discharging the fertilizer below the formation is detachably fixed along the nozzle arm 29, and the nozzle 30 also has a base end portion 30a similar to the nozzle arm 29.
And the tip portion 30b, and the tip portion 30b extends downwardly longer than the tip portion of the nozzle arm 29, and the upper and lower portions of the crank arm.
When 25 and 27 are positioned horizontally with respect to the surface of the earth, the length is almost in contact with the surface of the earth. Further, as shown in FIG. 1 (e), a blade-shaped rib 31 is fixedly attached to the tip end portion 30b of the nozzle 30 in the forward and backward direction of the working machine 2, so that the nozzle 30 can be driven into the ground. In order to reduce the penetration resistance to the nozzle tip portion 30b and reduce the load on the nozzle tip portion 30b, the ribs 31 cut the soil even when a force that tilts back and forth is applied to the nozzle 30 driven into the ground. The earth pressure applied to the nozzle 30 can be weakened. The nozzle 30 and the rib 31 may be integrally formed. Further, one hole 34 shown in FIG. 1E is formed at the tip of the nozzle 30 at the rear side in the traveling direction of the working machine 2, and fertilizer is discharged from the hole 34. The number of the holes 34 may be two as shown in FIG. 1 (f). Further, a joint 35 is attached to the tip of the nozzle base end portion 30a, and a fertilizer injecting hose 36 is fitted therein.

The two nozzles 30, which are interlocked with and connected to the crank operating unit 20, are arranged in close proximity to each other on the right and left sides of the working machine 2 as shown in FIG. The crank arm upper 25, 25 and the crank arm lower 27, 27 are arranged so as to sandwich 30, and the crank operating portion 20 is further provided so as to sandwich these crank arms 25, 25, 27, 27. There is. That is, when the working machine 2 is viewed from the rear, there are a group of nozzles 30 on the left and right, and the nozzles 30 on the left and right are sandwiched so as to sandwich the group of nozzles 30.
30 drive trains are arranged.

On the other hand, it drives these crank operating parts 20 and
Power unit for pumping fertilizer to 30, ie, tractor 1
Transmission case 12 that has an input shaft 11 that interlocks and connects with the PTO shaft
Is attached to the horizontal frame 14 passed to the lower link frame 17 hanging from the left and right of the front frame 16 of the working machine 2 described above. The transmission case 12 has output shafts A and B, and sprockets 40a and 40b are attached to both shafts A and B, respectively. The axis A is for rotating a counter shaft 41 that extends in the left-right direction of the work machine 2, and has a large diameter sprocket 41a attached to the counter shaft 41 and a sprocket attached to the axis A. A chain is wound around 40a. On the other hand, the shaft B is for driving two paste pumps 42 that pump the fertilizer stored in the tank to the nozzles 30 via the distribution valve 13, and is linked and connected to the erroneous pump 42.

Further, four sprocket wheels 41b for driving the crank operating portion 20 are attached to the counter shaft 41, and a chain 24 is wound around the sprocket wheels 23 provided on the outside of each crank case 20a. Has been. Then, as the counter shaft 41 rotates, the crank operating portion 20 operates, the upper and lower crank arms 25 and 27 rotate, and the nozzle 30 is driven substantially vertically. In this case, as shown in FIG. 2, the phase difference between the four nozzles 30 is 90 degrees in terms of the angle of the crank arm 25 when the working machine 2 is viewed from the side.
It is adjusted to be different each time. Therefore, with the rotation of the counter shaft 41, when viewed instantaneously, only one of the nozzles 30 is driven to be driven into the ground, and the other nozzles 30 are in a state of being pulled out of the ground or on the ground. As a result, the balance is maintained when the work machine 2 travels.

Further, the paste pump 42 is a paste tank 3 for storing the fertilizer loaded on the front part of the tractor 1 shown in FIG.
Is connected by a suction hose 5, and piping is also provided between the discharge port of the pump 42 and the inlet of the distribution valve 13. Then, the pump 42 pumps the fertilizer in the paste tank 3 to the distribution valve 13 by the rotation of the shaft B of the transmission case 12.

Further, as shown in FIG. 2, two distributing valves 13 are vertically installed at the front frame 16 of the working machine 2, and each distributing valve 13, 13 has eight discharge ports. have. The distribution valve 13 has a rotating shaft protruding to the outside, a sprocket is attached to the protruding portion of the rotating shaft, and a chain is wound around the counter shaft 41 and a small sprocket. However, the fertilizer pressure-fed from the paste pump 42 is sequentially distributed to the eight discharge ports in synchronization with the rotation of the counter shaft 41. Further, as shown in FIG. 6, the two adjacent discharge ports of the respective distribution valves 13 are short-circuited and joined to a fixed joint 43 provided on the upper portion of the front frame 16 of the working machine 2. It is plumbed. The inlet of the fixed joint 43 is bifurcated and is piped from the two distribution valves 13, and the fertilizer distribution of these two distribution valves 13 is synchronized. A hose 36 is connected between the outlet of the fixed joint 43 and the joint 35 provided on the upper portion of the nozzle 30, and the hose 36 is made of a flexible material.

The hose 36 has one end fixed with a fixed joint 43 and the other end provided on the nozzle 30.
Since it is connected to the nozzle 35, the upper part of the nozzle 30 moves up and down and back and forth in accordance with the work, so that the hose 36 also undulates with its movement. As a result, the hose 36 may become entangled with other parts, so a pipe support guide 37 as shown in FIG. 2 is provided as a mitigating measure. The support guide
Reference numeral 37 denotes an arm 37a and a hose guide 37b pivotally attached to the tip of the arm 37a. The base end of the arm 37a is pivotally supported by the upper frame 19a of the working machine 2 and is rotatable in the front-back direction. The hose guide 37b supports the hose 36.

Wheels 45 are attached to the left and right sides of the work machine 2, and a safety frame 46 is provided at the rear part of the work machine 2.

Since the present embodiment is configured as described above, when fertilizing fertilizers under the stratum for root crops such as asparagus planted in the field, first, the fertilizer application machine 2 is attached to the tractor 1 to form a straight line. With the tractor 1 straddling over the planted plant, the working machine 2 is lowered to land and travel.

Then, the PTO shaft rotates as the tractor 1 travels, and the PTO shaft rotates.
The input shaft of the transmission case 12 of the working machine 2 that is linked / connected to the TO shaft
Since 11 rotates, the output shafts A and B of the transmission case 12 also rotate. When the output shaft A rotates, the counter shaft 41 passes through the sprocket 40a, the chain, and the large diameter sprocket 41a.
Rotates. The rotation of the counter shaft 41 drives the four crank operating parts 20 through the chain and the sprocket 23, and the crank arm upper part 25 and the crank arm lower part 27 attached to the malfunction part 20 rotate in synchronization with each other. The nozzle 30 is driven in the up-down direction in a vertical state.

On the other hand, since the output shaft B of the transmission case 12 is interlocked and connected to the paste pump 42, the paste pump 42 is driven by the rotation of the output shaft B, and the paste tank 3 loaded on the front part of the tractor 1 is connected to the hose 5. The paste fertilizer flowing to the rear of the tractor reaches the suction part of the paste pump 12,
It is pressure-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 is fed under pressure to distribute the paste fertilizer to the eight outlets. The paste fertilizer discharged from the discharge port of the distribution valve 13 passes through the nozzle 30 through the fixed joint 43 fixed to the front frame 16, the hose 36 and the joint 35 attached to the nozzle 30, and the tip portion 30b of the nozzle 30. It is ejected from the hole provided in the. At that time, the crank operating part 20 and the distribution valve 13 are
Since the operation timing is synchronized through 41, the chain, and the sprocket, the paste fertilizer is injected into the position where the tip of the nozzle 30 reaches a depth of about 30 cm in the ground.

Further, since the interchange 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 the upper and lower crank arms 25, 27 are rotated.
If the speed of the half-rotation of the nozzle 30 in the advancing direction and the speed of the tractor 1 are the same, the upper part of the nozzle 30 inclines in the advancing direction as shown in FIG. Before it comes out, it leans backward in the direction of travel. Then, when the nozzle 30 reaches the maximum depth in the ground, it becomes vertical, and when it comes out to the ground again, it returns to vertical again.

When the nozzle 30 tilts back and forth in the traveling direction, one spring 32d provided in the accommodation mechanism 32 contracts to move the pivotal attachment point of the lower crank arm 27 and the nozzle arm 29, so that it penetrates into the soil. The load on the tip portion 30b of the nozzle 30 is reduced. Further, since the rib 31 is provided on the tip end portion 30b of the nozzle 30, when the nozzle 30 tilts back and forth, the soil in the front and back is cut apart, so that the earth pressure applied to the nozzle tip portion 30b can be reduced. Further, since the fertilizer discharge hole 34 of the nozzle tip portion 30b is provided on the rear side in the traveling direction, the earth pressure is small, and the hole 34 is not likely to be clogged with soil.

Further, the four nozzles 30 perform the driving work alternately, but since the wheels 45 are mounted on both left and right sides of the working machine 2, the rolling of the working machine 2 due to the penetration resistance reaction force due to the driving is prevented. Moreover, the driving depth can be kept constant.

(G) Effect of the Invention As described above, according to the present invention, the fertilizer application nozzle (30)
Since the ribs (31) are fixed to the front end portion (30b) of the crank arm (25) and (27) pivotally attached to the crank operating portion (20) along the front and rear, the nozzle (30) When is inclined in the direction of travel, the rib (31) cuts through the soil, so the front-back force applied to the nozzle (30) can be reduced,
The strength can be secured without increasing the diameter of the nozzle (30). Moreover, since the rib (31) cuts and crushes the soil by swinging the nozzle (30) back and forth in the traveling direction, air can be mixed into the ground and the growth of the crop can be promoted.

Further, the nozzle (30) connected to the crank operating part (20).
Since the base end portion (30a) and the tip end portion (30b) are divided and can be removed, when the fertilizer application machine (2) is mounted on a truck while being attached to the tractor (1), If the nozzle tip portion (30b) is removed, the working machine (2) can be lowered to the lowest position, and the stability of transportation can be secured. Also, if you want to remove the nozzle tip (30b) when crossing the ridge,
It is possible to avoid a situation in which the tip portion (30b) is caught in the ridge and is damaged. Furthermore, the tip of the nozzle (30b)
If it is damaged, only the tip (30b) needs to be replaced, and repairs can be done easily.

[Brief description of drawings]

FIG. 1 (a) is a front view showing a fertilizer application nozzle attached to a crank operating portion, and FIG. 1 (b) is a top view of a nozzle arm.
A cross-sectional view of the lower connecting portion between B-B, FIG. 1 (c) is a cross-sectional view of C-C, FIG. 1 (d) is a cross-sectional view of the crank operating portion, and FIG. 1 (e) is Figure showing the nozzle tip,
FIG. 1 (f) is a sectional view taken along line f-f of the nozzle tip portion. 2 is a view showing a nozzle and an interchange mechanism, FIG. 3 is a side view of the fertilizer application machine mounted on a tractor, FIG. 4 is a side view of the fertilizer application machine, and FIG. It is a rear view. FIG. 6 is a diagram showing a connection state of the paste pump, the distribution valve, and the nozzle. 1 ... tractor, 2 ... fertilizer application machine, 20 ... crank operating part, 25 ... crank arm upper, 27 ... crank arm lower, 30 ... nozzle, 31 ... rib.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-59-175810 (JP, A) Actually open 53-154813 (JP, U) Actually open 62-111318 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A nozzle which is mounted on a fertilizer application machine and which is driven substantially vertically by a crank operating unit to supply fertilizer and the like into the soil, wherein a tip end portion of the nozzle pivots to the crank operating unit. A fertilizer application nozzle in a fertilizer application machine, characterized in that ribs are fixed to the front and rear along the rotation surface of the worn crank arm. 2. A fertilizer application nozzle for a fertilizer application machine according to claim 1, wherein the nozzle connected to the crank operating portion is configured such that a base end portion and a tip end portion of the nozzle are detachable.