JP2000333520A - Fertilizing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilizing machine capable of precisely discharging a fertilizer from each lifting and lowering fertilizing nozzle into the ground and preventing damage when driving the fertilizing nozzle into the ground. SOLUTION: This fertilizing machine is obtained by installing guide rods 41a and 41b for lifting, lowering and guiding each fertilizing nozzle 21 in a nozzle lifting and lowering mechanism 6, arranging a conversion link 42 among the guide rods 41a and 41b and a discharging pump 22, actuating the converting link 42 by the lowering movement of the guide rods 41a and 41b and thereby changing over the discharging pump 22 into a fertilizer discharging posture in a fertilizing device 2 equipped with a fertilizing part 4 prepared by integrally composing the nozzle lifting and lowering mechanism 6 for making the fertilizing nozzle 21 perform operations to lift and lower and the discharging pump 22 for delivering the fertilizer when lowering the fertilizing nozzle 21 in a fertilizing frame 40 mounted on a tool bar 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground fertilizer application machine capable of discharging and injecting a paste-like fertilizer, a soil modifying agent or a disinfectant into the ground at the base of vegetables or the like.

[0002]

2. Description of the Related Art Conventionally, as a fertilizer as described above, for example, a fertilizer of the type disclosed in Japanese Patent Application Laid-Open No. 61-5714 has been proposed.

[0003]

The fertilizer having the structure shown in the above-mentioned prior art is not only a hydraulic device for raising and lowering the fertilizer nozzle, but also a fertilizer pump for discharging fertilizer when the fertilizer nozzle descends. Since the method is performed using a valve or the like, there is a disadvantage that the cost is increased, and there is a problem that a structure for adjusting a discharge amount and a discharge timing is complicated.

Further, since the fertilizer application part of this prior art only supports the fertilizer nozzle so as to be slidable in the front-rear direction with respect to the machine base, the fertilizer nozzle swings back and forth while moving up and down, and There is a problem that it cannot swing and swing, cannot follow the shaking of the body due to uneven running of the ground when driven into the ground, and easily damages the fertilizing nozzle and its support.

[0005]

The fertilizer applicator of the present invention for achieving the above object has the following configuration. First
In addition, a fertilizer application unit 4 integrally configured with a nozzle elevating mechanism 6 for raising and lowering the fertilizer nozzle 21 and a discharge pump 22 for sending out fertilizer when the fertilizer nozzle 21 descends, is mounted on a fertilizer application frame 40 attached to the toolbar 30. In the fertilizer applicator 2 having the nozzle elevating mechanism 6, guide rods 41 a and 41 b for raising and lowering the fertilizer nozzle 21 are provided, and a conversion link 42 is provided between the guide rods 41 a and 41 b and the discharge pump 22. The downward movement of 41a, 41b activates the conversion link 42 to switch the discharge pump 22 to the fertilizer discharge position.

Secondly, the fertilizer application section 4 is rotatably supported in the front-rear direction by pivotally supporting the fertilizer application frame 40 on the toolbar 30 via a horizontal axis 45. Third
In addition, the fertilizer application section 4 is rotatably supported in the left-right direction by pivotally supporting the fertilizer application frame 40 on the toolbar 30 via a horizontal axis 45.

Fourthly, the fertilizer application section 4 is characterized in that the right and left fertilization angles of the fertilizer nozzle 21 are changed and adjusted by rotatably supporting the fertilizer application section 4 in the left-right direction. Fifth, a discharge switching valve 7 for switching the fertilizer sent from the fertilizer nozzle 21 so that the fertilizer can be discharged from the fertilizer nozzle 21 can be connected to the conversion link 42.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. A is a three-point link mechanism 1a at the rear of a tractor (traveling body) 1
This is an underground fertilizer application machine that is detachably mounted. The three-point link mechanism 1a of the tractor 1 includes left and right lower links 10, 10 similar to the conventional device, a top link 11 installed above the center thereof, and a lift link rod 1
An input shaft 15 is provided between the left and right lower links 10, 10 so as to drive the fertilizer application device.

As shown in FIGS. 1 to 3, the fertilizer applicator 2 is a fertilizer tank containing a fertilizer or the like for underground filling on a machine base (fertilizer application frame) 3 having tail wheels 3a, 3a at the rear. 20, a fertilizing unit 4 that injects fertilizer into the ground by a fertilizing nozzle 21 that moves up and down, and a fertilizing device 2 that includes a fertilizing pump 2 </ b> P (FIG. 3) that supplies fertilizer from a fertilizer tank 20 to the fertilizing unit 4. A fertilizer pump 2P and a fertilizer tank 20 are arranged at positions before and after the machine base 3, and a fertilizer 4 is installed between the two.

The machine base 3 supports the toolbar 30 to which the fertilizer application section 4 is attached horizontally between the vertical frames 31 erected on both sides of the front of the machine base 3 and the left and right sides of the three-point link mechanism 1a. The fertilizer applicator 2 can be moved up and down on the tractor 1 by connecting the lower links 10 and 10 between the two vertical side frames 31 and 31 and supporting the top link 11 on a top link bracket 32 provided at the center of the toolbar 30. The fertilizer application can be performed at a predetermined depth while being towed while the tail wheels 3a, 3a are in contact with the ground. 31a, 31a are support pins for connecting the lower links 10, 10 provided on the vertical frames 31, 31, and 32a is a mounting hole for connecting the top link 11 provided on the top link bracket 32.

In the illustrated machine base 3, two front and rear frames 33 are provided side by side with a space between the fertilizing nozzles 21 of the fertilizing units 4 arranged on the left and right with an interval for allowing another fertilizing unit 4 to be installed. Are connected to the lower surface of a plate-like base table 35 having the vertical frame 31 erected on both sides, and the rear side thereof can be stably mounted on the left and right with the fertilizer tank 20 and the hydraulic oil tank 5. The rigid frames are integrally formed by being connected by the horizontal frames 36,36.

On both sides of the front horizontal frames 36, 36, tail wheels 3a, 3a are provided with wheel longitudinal axes 37, as shown in FIG.
The tail wheel 3a,
By setting the vehicle height by 3a, the fertilizing depth of the fertilizing nozzle 21 can be set easily and accurately.

An input power is transmitted from the PTO shaft 13 (FIG. 1) through a joint shaft 13a into a rectangular space defined by the base 35, the left and right vertical frames 31, and the upper toolbar 30. As shown in the input shaft 15 (FIG. 3), the fertilizer pump 2P and the hydraulic pump 50 installed on the upper side and the right side of the input shaft 15 are respectively shifted to the left and the belt transmission is separately performed. By being provided as possible, the transmission parts are compactly arranged to provide a surrounding guard by each frame.

A hydraulic operation valve 52 connected to the hydraulic pump 50, the hydraulic oil tank 5 and the filter 51 via a filter 51.
(FIG. 2) is connected to a nozzle elevating mechanism 6 (FIG. 5) of the fertilizing section 4 described later via an oil pipe 53 (FIG. 3), and reciprocates the elevating cylinder 60 at a predetermined timing operation, thereby forming the fertilizing nozzle 21. Can be reciprocated up and down. The filter 51 is provided in a space recessed at the lower front side of the hydraulic oil tank 5.

While the machine base 3 is configured as described above,
The fertilizer application apparatus 2 in which the respective devices and the fertilizer application unit 4 are installed is configured to pivotally support the top link 11 by pins inserted into the mounting holes 32a of the top link brackets 32 provided on the left and right. Also, the left and right top link brackets 32
3 and 4 are slightly wider than the width of the mounting bracket 47 of the fertilizing frame 40 shown in FIGS.
Can be easily attached by the same means as described above.

Next, the configuration of the fertilizer 4 and its mounting structure will be described. The fertilizer applicator 2 comprises a fertilizer application frame 21 attached to the left and right sides of the toolbar 30 and a fertilizer application nozzle 21.
In the fertilizer applicator 2 having the fertilizer section 4 in which the nozzle elevating mechanism 6 for raising and lowering the fertilizer and the discharge pump 22 for sending out the fertilizer when the fertilizer nozzle 21 is lowered, the nozzle 21 The guide rods 41a and 41b for guiding are provided.
The conversion link 42 is disposed between the discharge pump 22 and the discharge pump 22. As shown in FIGS. 5A, 5B, and 5C, the conversion link 42 is caused to swing by the downward movement of the guide rod 41a, thereby causing the discharge pump 22 to move. The switching link 42 is operated to switch to the fertilizer discharge posture, and the conversion link 42 is provided with a discharge switching valve 7 for switching the fertilizer sent by the discharge pump 22 to be discharged from the fertilizing nozzle 21.

Therefore, the fertilizer pump 2
P (FIG. 3) is fed with fertilizer nozzle 21
By operating the discharge pump 22 at the lowering-stoke operating end (lowest descent portion) to feed the liquid toward the fertilizing nozzle 21 side, the discharge switching valve 7 is opened and switched by the opening amount set in accordance with this timing. The fertilizer can be rapidly and accurately discharged into the ground through the nozzle hole 21a of the fertilizing nozzle 21.

The fertilizer application section 4 pivots the fertilizer application section 4 forward and backward as shown in FIG. 4A by pivotally supporting the fertilizer application frame 40 on the toolbar 30 via the horizontal axis 45 as shown in FIG. It is movably supported. By pivoting the fertilizer application frame 40 with respect to the toolbar 30 via the longitudinal axis 48 (the front-rear direction with respect to the machine base 3), the fertilizer application unit 4 can be rotated left and right as shown in FIG. I support it. Therefore, even if the machine body 3 swings right and left due to unevenness of the ground while the machine body is traveling forward, an excessive load is applied to the fertilizing nozzle 21 inserted in the ground to break the machine. That can be prevented.

That is, as shown in FIG. 4, the fertilizer application section 4 has a support structure having a long plate-shaped fertilizer application frame 40 and a horizontal axis 45 supported on the rear surface slightly above the middle thereof as shown in FIG. Board 4
6, a mounting bracket 47 having a bifurcated mounting portion 47a fitted to the toolbar 30 from one side, and a lid plate 47.
The toolbar 30 is fastened and fixed by b. Further, the mounting bracket 47 is inserted into a support hole 46a protruding from the mounting bracket 47 side and formed in the center of the support plate 46.
The fertilizer application frame 40 is supported so as to be rotatable in the left-right direction by integrally fitting the vertical axis 48.

The hole 47c of the mounting bracket 47 is formed larger than the hole of the pin 49, the pin 49 is inserted into the screw hole N, and the support plate 46 and the pin 49 are integrally formed by screwing. I have. Therefore, the fertilizer application frame 40 has the angle [α]
You can swing left and right by the minute.

As shown in FIG. 4, the vertical axis 48 is formed as a fulcrum on a radius centered on the vertical axis 48 having a driving angle (inclined driving angle) [β] on the lower side of the vertical line and on both sides thereof. Screw holes N, L, R are provided, and these screw holes N, L,
The driving angle of the fertilizing nozzle 21 can be selectively selected between a vertical posture and an oblique posture of the driving angle [β] in the left-right direction by screwing and fixing the regulating pin 49 to R. The fertilizer application nozzle 21 is appropriately driven into the ground from a suitable direction with respect to the crop so that fertilization can be performed by adapting to the ridge shape and the inclination of the field.

The fertilizer application nozzle 21 rotates the fertilizer application frame 40 back and forth by an angle [α] with the horizontal axis 45 as a rotation fulcrum.
In addition, since the center of gravity of the fertilizer application section 4 is located below the horizontal axis 45, after the fertilizer application nozzle 21 comes out of the ground, the fertilizer application nozzle 21 comes into contact with the stopper 47d and returns to its original posture by its own weight. I have. Further, since the stopper 47d has such a size that the fertilizer application section 40 is inclined forward, the fertilizing nozzle 21 starts to be driven into the ground in this forward inclined attitude and becomes substantially vertical near the bottom dead center. Can be performed effectively.

Therefore, as shown in FIG. 2, when the fertilizing nozzle 21 starts to be driven at the position (X) in the standby posture and is inserted into the ground, the fertilizer nozzle 21 is moved from the insertion of the fertilizing nozzle 21 to the withdrawal thereof. The attitude of the fertilizing nozzle 21 can be rotated from (X) to (Y) and (Z) about the horizontal axis 45 as the traveling progresses. Therefore, the driving reaction force of the fertilizing nozzle 21 can be concentrated and received on the horizontal axis 45.

Next, a detailed configuration of the fertilizer 4 will be described with reference to FIGS. As shown in the figure, the fertilizer application frame 40 is provided with the nozzle elevating mechanism 6 on the lower right side thereof and the discharge pump 22 on the upper left side.
, And a cross-shaped conversion link 42 and a fertilizing nozzle 21 are vertically arranged between the two.

The nozzle elevating mechanism 6 comprises an elevating cylinder 60 provided with a holder 62 for fixing the fertilizing nozzle 21 at the lower end of a piston rod 61 which expands and contracts downward, and a fertilizing frame parallel to the elevating cylinder 60 in the vertical direction. And a guide rod 41 slidably supported in the support cylinder 63, having a lower end fixed to the holder 62 and an upper end provided with an operating portion 65 for operating the conversion link 42. are doing.

As shown in FIG. 7, the operating portion 65 is a roller 65a rotatably projecting from the guide rod 41 toward the conversion link 42, and is provided above the contact surface 42a of the conversion link 42. Is located. The fertilizing nozzle 21 is connected to the upper end of the cylindrical shaft thereof with a flexible fertilizing pipe 21b with a check valve that communicates with the discharge side of a discharge switching valve 7 described later.

On the other hand, the conversion link 42 is formed by two link plates formed in a letter shape as shown in FIGS. 6 and 7, a roller 42b is rotatably provided at the left end thereof, and a halfway of both link plates is provided. The fertilizer application frame 40 is pivotally supported on a support shaft 66 so as to be rotatable, and a guide rod 41a is sandwiched between right contact surfaces 42a. A roller 42c that comes into contact with a valve 70 of the discharge switching valve 7, which will be described later, in the middle of the contact surface 42a,
It is rotatably provided on the right side of the two link plates 42, 42 formed in a U-shape. Further, the roller 42b is held in a posture in which the roller 42b is pressed against the head of the discharge pump rod 22a tensioned by a spring.

Then, the extension of the nozzle elevating mechanism 6 causes the operating portion 65 to move downward, and the rollers 65a contact the contact surface 42a of the conversion link 42 from FIG. 5A to FIG.
Then, the process proceeds to (C). Meanwhile, the roller 42b provided at the left end of the conversion link 42 is
a in the fertilizer pumping direction, the fertilizer supplied from the fertilizer pipe 21c side of the fertilizer pump 2P through the check valve structure through the discharge switching valve 7 from the fertilizer pipe 21d (FIG. 5) side. Pressure feeding is performed toward the fertilizing nozzle 21 side.

At this time, since the discharge switching valve 7 communicating with the fertilizer tube 21c allows the fertilizer tube 21d side to communicate with the fertilizer tube 21b of the fertilizing nozzle 21, the valve 70 is arranged as shown in FIG. As shown, the conversion link 42
Of the fertilizer nozzle 2
1, the fertilizer can be properly discharged from the nozzle hole 21a with good timing at the lowering position, and the fertilizer can be fertilized deep underground and satisfactorily.

When the fertilizer application nozzle 21 enters the ascending step (C-B-A in FIG. 5), the operating section 65 releases the pressing of the conversion link 42 (the conversion link 42 rotates left), and the valve 70 is turned on. As soon as the fertilizer is closed by the spring and the discharge pump rod 22a is also returned by the force of the spring to stop feeding the fertilizer, unnecessary discharge of the fertilizer when the fertilizer application nozzle 21 is raised can be prevented reliably.

Accordingly, the fertilizer application section 4 constructed as described above
The operation of the nozzle raising and lowering mechanism 6 raises and lowers the fertilizer application nozzle 21 integrally with the operating part 65, and the conversion pump 42 swings and pivots on a support shaft 66 as a fulcrum.
And the discharge switching valve 7 can be operated simultaneously with a predetermined link ratio, and a compact and inexpensive structure is combined with a compact discharge mechanism on the fertilizer application frame 40 while discharging from the nozzle hole 21a due to the fertilizer pumping. Can be fertilized with good timing at the lowered position.

Then, as shown in FIG. 7, the discharge switching valve 7 changes the operation stroke of the valve 70 to the conversion link 4.
It is provided with a fertilizer application amount adjusting mechanism 9 which can be easily adjusted by moving forward and backward with respect to 2 so that the discharge amount of the fertilizer at the lowering position portion of the fertilizer nozzle 21 can be easily adjusted with a simple configuration. I have to.

That is, the fertilizer application amount adjusting mechanism 9 has an adjusting hole 9 through which the right and left adjusting screws 90 and 91 can be inserted.
The adjusting plate 93 having a plurality of openings 2 is attached to the left adjusting screw 90.
And a screw hole 97 for inserting the right adjustment screw 91 therethrough is superposed on the fertilizer application frame 40, and the discharge switching valve 7 is fixed above the adjustment plate 93. I have.

With this configuration, when the adjusting plate 93 is tightened and fixed to the fertilizer application frame 40 with the adjusting screws 90 and 91 moved to the right, the stroke of the valve 70 accompanying the operation of the conversion link 42 becomes maximum, and the fertilizer is removed. The maximum discharge amount can be set. Further, when the adjusting plate 93 is mounted shifted to the left, the stroke of the valve 70 can be reduced and the discharge amount of fertilizer can be reduced.

With this configuration, the discharge pump rod 22a
There is an advantage that the discharge amount of the fertilizer by the fertilizing nozzle 21 can be easily adjusted by a simple configuration in which the stroke of the discharge switching valve 7 is adjusted while the operation of the fertilizer is constant. Further, the fertilizer applicator 2 configured as described above operates the control box 8 as shown in FIG. 8 to operate the operation changeover switch 80 to perform the air bleeding operation of the fertilizing circuit, the idle operation without discharging the fertilizer, and the fertilizing operation. The automatic operation to be performed can be performed alternatively.

The fertilizer is alternately applied one by one from the left and right fertilizers 4 by the nozzle number selector switch 81, or fertilizer is selectively applied from the fertilizer 4 on one side. When the part 4 is newly attached, it is possible to perform fertilization from the left, right, center, and three fertilization nozzles 21.

In the underground fertilizer application machine according to the present invention configured as described above, first, the fertilizer application amount adjusting mechanism 9 is set to a desired fertilizer discharge amount, and then the height of the tail wheel 3a is adjusted to apply the fertilizer application depth by the fertilizer nozzle 21. When the machine is moved forward after the setting, the fertilizer application section 4 moves the fertilizer application nozzle 21 up and down at a predetermined stroke and timing via the lifting cylinder 60 by the operation of the hydraulic pump 50 and the fertilizer application pump 2P. The discharge pump 22 and the discharge switching valve 7 on the fertilizer application frame 40
The fertilizer application nozzle 21 discharges the fertilizer into the soil at the lowered position through the, so that a predetermined amount of the fertilizer application at a predetermined depth can be satisfactorily performed.

In such a fertilizer application operation, the fertilizer application section 4 pivotally supports the fertilizer application frame 40 on the toolbar 30 via the horizontal axis 45, so that the fertilizer application nozzle 21 is started to be driven into the soil and then pulled out. As the aircraft moves forward,
As shown by, the fertilizing nozzle 21 is (X), (Y),
(Z), the head can be swung back and forth freely, so that the fertilizer application nozzle 21 can be moved up and down smoothly.
No excessive load is applied to the fertilizer application nozzle 21.

Further, even if the fertilizer applicator 2 sways while the fertilizer application nozzle 21 is driven into the ground, the fertilizer application section 4 that pivotally supports the fertilizer application frame 40 on the toolbar 30 via the vertical axis 48 is shown in FIG. As described above, since the head is swung right and left around the vertical axis 48, the fertilizer application nozzle 21 can be smoothly moved up and down in the same manner as described above, and the fertilizer application can be performed well.
Damage to the fertilizing nozzle 21 and the like can be prevented.

Further, a fertilizer tank 20 containing a fertilizer or the like for filling underground, a fertilizer section 4 for injecting fertilizer into the ground by a fertilizer nozzle 21 which moves up and down, and a fertilizer tank 2
In the fertilizer applicator 2 including the fertilizer pump 2P that feeds fertilizer from 0, the fertilizer pump 2P and the fertilizer tank 20 are arranged before and after the machine base 3, and the fertilizer application unit 4 is installed between the two. The tool bar 30 to which the fertilizer application unit 4 is attached is supported laterally by vertical frames 31 erected from both sides of the front of the machine base 3 and the left and right lower links 10, 10 of the three-point link mechanism 1a are connected to the vertical frames 31, 31, respectively. And the top link 11 is connected to and supported by the top link bracket 32 provided at the center of the toolbar 30, so that the transmission system such as the fertilizer pump 2 </ b> P can be compactly mounted on the side close to the tractor 1. The fertilizer 2 can be organized in a well-balanced manner while being employed, and the inexpensive fertilizer apparatus 2 can be provided.

In the fertilizer application operation, the fertilizer application unit 4 is supported by the toolbar 30 provided in the horizontal direction by the vertical frame 31 at the front side of the machine base 3, so that the reaction force at the time of driving caused by the lowering of the fertilizer nozzle 21 is reduced. Received on this toolbar 30,
Since the top link 11 and the lower links 10, 10 of the three-point link mechanism 1a can be dispersed in the top link bracket 32 and the vertical side frame 31, which are disposed vertically, and can be supported with a small reaction force moment, fertilization can be performed. Part 4
The fertilizer application can be performed satisfactorily by suppressing the reaction force vibration of the body while stably supporting the fertilizer.

[0042]

As is apparent from the above description, according to the fertilizer applicator of the present invention, the discharge pump 22 is operated via the conversion link 42 by the operation of lowering the fertilizer nozzle 21 by the operation of the nozzle elevating mechanism 6. As a result, the fertilizer is discharged from the fertilizer nozzle 21, so that the fertilizer can be discharged accurately at the lower part of the fertilizer nozzle 21.

Further, with the operation of the conversion link 42, the discharge switching valve 7 synchronized with the fertilizer discharge operation of the discharge pump 22 is simultaneously switched to perform the fertilizer application well, and the configuration of the fertilizer unit 4 is simplified. In addition, it can be made durable with substantially no adjustment required.

In the fertilizer application operation, the fertilizer application part 4
5 and the tool bar 30 is rotatably supported on the toolbar 30 via the vertical axis 48, so that when the fertilizing nozzle 21 is driven, the fertilizing operation can be performed efficiently without imposing an excessive burden on the fertilizing nozzle 21. is there. Furthermore, since the fertilizer nozzle 21 is provided so that the left and right swing positions can be adjusted, fertilizer can be freely applied from a desired fertilizer application angle to the crop, and the fertilizer application effect can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a fertilizer application device of the present invention is mounted on a tractor.

FIG. 2 is a side view of the fertilizer applicator.

FIG. 3 is a rear view of FIG. 2;

FIG. 4A is a side view showing a mounting structure of a fertilizer application part,
(B) is the same front view.

5A and 5B show the structure and operation of the fertilizer application unit, FIG. 5A is a rear view showing a standby posture of the fertilizer application nozzle, FIG. 5B shows an initial posture of the application of the fertilizer application nozzle, and FIG. The mode of the lowest position is shown.

FIG. 6 is a plan view of a fertilizer application unit.

FIG. 7 is a rear view showing a configuration of a conversion link and a discharge switching valve of the fertilizer application unit.

FIG. 8A is a plan view of a control box, and FIG.
3 is a rear view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tractor 1a 3 point link mechanism 2 Fertilizer 3 Machine base 4 Fertilizer application section 5 Hydraulic oil tank 6 Nozzle elevating mechanism 7 Discharge switching valve 10,10 Lower link 11 Top link 20 Fertilizer tank 21 Fertilizer nozzle 22 Discharge pump 30 Toolbar 41a, 41b Guide Rod 42 Conversion link 45 Horizontal axis 48 Vertical axis 50 Hydraulic pump 51 Discharge switching valve 52 Operating valve 60 Elevating cylinder 65 Operating section 70 Valve

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Koichi Yamamoto 667, Iya-cho, Izumo-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (Reference) 2B052 BC07 CA09 EB05 EB14 ED01 ED05

Claims (5)

[Claims] 1. A fertilizer application frame 4 attached to a toolbar 30.
0, the nozzle lifting mechanism 6 for raising and lowering the fertilizer nozzle 21 and the fertilizer 4 having a fertilizer unit 4 integrally configured with a discharge pump 22 for sending out fertilizer when the fertilizer nozzle 21 is lowered. 6 is provided with guide rods 41 a and 41 b for guiding the raising and lowering of the fertilizer nozzle 21, and a conversion link 4 between the guide rods 41 a and 41 b and the discharge pump 22.
2. A fertilizer applicator characterized in that the dispensing pump 2 is provided, and the conversion link 42 is operated by the downward movement of the guide rods 41a and 41b to switch the discharge pump 22 to the fertilizer discharge posture. 2. The fertilizer application frame 40 is attached to the toolbar 30 by a horizontal axis 45.
The fertilizer applicator according to claim 1, wherein the fertilizer applicator 4 is rotatably supported in a front-rear direction by pivotally supporting the fertilizer applicator. 3. The fertilizer application frame 40 is attached to the toolbar 30 by a horizontal axis 45.
The fertilizer applicator according to claim 1, wherein the fertilizer applicator 4 is rotatably supported in a lateral direction by pivotally supporting the fertilizer applicator. 4. The fertilizer application device according to claim 1, wherein the left and right fertilization angles of the fertilizer nozzle are changed and adjusted by positioning and supporting the fertilizer application unit so as to be rotatable in the left-right direction.
The fertilizer applicator according to any one of the above. 5. The conversion link (42) is provided with a discharge switching valve (7) for switching the fertilizer delivered by the discharge pump (22) from the fertilizer nozzle (21) so that the fertilizer can be discharged from the fertilizer nozzle (21). An underground fertilizer application machine according to (1).