JP2003061426A - Fertilizing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilizing machine in which the fertilizer in a fertilizing tank can be discharged completely by lifting up a fertilizing apparatus. SOLUTION: The fertilizing machine has the fertilizing apparatus 20 linked behind a tractor 5 via a three point linking device 11. The fertilizing apparatus 20 comprises a fertilizer tank 75 and a discharging hose 83 for discharging the fertilizer in the fertilizer tank 75, and the discharging hose 83 is placed on such a position that, when the fertilizing apparatus 20 is lifted by the linking device 11, the position comes to the lowest part of the fertilizer tank 75. Accordingly, the fertilizer in the fertilizer tank 75 can be discharged surely by lifting the fertilizing apparatus 20.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a fertilizer application device for driving a nozzle into the ground and injecting (pointing) fertilizer, soil modifying agent, disinfectant, etc. (hereinafter referred to as fertilizer) into the ground. The present invention relates to a fertilizer applicator that is connected via.

[0002]

2. Description of the Related Art As a fertilizer applicator which is connected to the rear of a riding type tractor via a link device, for example, Japanese Patent Application Laid-Open No.
A fertilizer applicator disclosed in Japanese Patent Publication No. 0-333520 has been proposed.

When a suction hose for supplying fertilizer from the fertilizer tank to the nozzle and a drain hose for discharging fertilizer from the fertilizer tank are arranged in front of the moving direction of the fertilizer tank, the nozzle is moved forward and backward with respect to the moving direction. Since the nozzle swings in the left-right direction, the nozzle may come into contact with the suction hose or the drain hose, damage the hose, or remove the drain hose cap. In addition, on the front side of the fertilizer tank, the connection work between the fertilizer tank and the suction hose must be performed in a narrow space, which may reduce workability. Connection points for suction hose and drain hose are formed.

[0004]

Therefore, even when the fertilizer application is completed and the fertilizer in the fertilizer tank is discharged to raise the fertilizer applicator with reference to the link device, the rear surface of the fertilizer tank becomes high. The fertilizer in the tank cannot be discharged.

In view of the above circumstances, it is an object of the present invention to provide a fertilizer applicator capable of completely discharging the fertilizer in the fertilizer tank and preventing the suction hose and drain hose from being damaged. And

[0006]

In order to achieve the above object, the first aspect of the present invention provides a fertilizer application in which a fertilizer application device (20) is connected to the rear of the traveling machine body (5) via a link device (11). In the machine (1), the fertilizer application device (20) has a tank (75) and a drain hose (83) for discharging fertilizer in the tank (75), and the drain hose (83).
However, in the fertilizer applicator, the fertilizer applicator (20) is arranged at a position which becomes the lowermost part of the tank (75) when the fertilizer applicator (20) is raised by the link device (11).

Further, claim 2 of the present invention comprises a suction hose (85) for guiding the fertilizer in the tank (75) to the nozzle (66), and the suction hose (85) is
The frame (21) of the fertilizer application device (20) and the tank (7)
5) The fertilizer applicator according to claim 1, characterized in that the fertilizer applicator is arranged through the space between (5).

According to a third aspect of the present invention, the drain hose (8) is connected to the suction hose (85).
3. The fertilizer application according to claim 1, characterized in that a drain hose (3) is provided and the drain hose (83) is arranged between the tail wheel (27) of the fertilizer application device (20) and the tank (75). On the plane.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention. FIG. 1 is a side view showing a state in which the fertilizer application apparatus of the present invention is connected to a tractor, and FIG. 2 is a side view of the fertilizer application apparatus in FIG. 3, FIG. 3 is a rear view of the fertilizer application apparatus in FIG. 1, FIG. 4 is a rear view of a fertilizer tank, FIG. 5 is an enlarged partial sectional view of a cover portion of the fertilizer tank in FIG. 4, and FIG.
5 is a perspective view of the filter in FIG. 5, FIG. 7 is an enlarged view of the inner screw portion in FIG. 5, FIG. 8 is a side sectional view showing a state in which a cover at the tip of the nozzle is provided, and FIG. 9 is a view of the cover in FIG. It is a side sectional view showing a moved state.

The fertilizer applicator 1 comprises a tractor 5 and a fertilizer applicator 20 as a working machine. The fertilizer applicator 20 is connected by a three-point link device 11 at the rear of the tractor 5.

A driver's cab 10 is formed in a machine body 9 supported by front wheels 6 and rear wheels 7 of the tractor 5. The three-point link device 11 provided on the rear part of the body 9 of the tractor 5 includes the left and right lower links 1 arranged at a predetermined interval.
2, 12, a top link 13 arranged above the central portion thereof, a lift link rod 15 and the like. A PTO (work machine power take-out) shaft 16 is arranged so as to be located between the lower links 12, 12.

As shown in FIGS. 2 and 3, the fertilizer applicator 20 connects and fixes a pair of frames 21 arranged at a predetermined interval in parallel with the traveling direction of the tractor 5 and the front end side of the frames 21. The plate-shaped base 22 and the base 21 are arranged in parallel at a predetermined interval in a direction orthogonal to the frame 21,
The machine body 25 includes a pair of horizontal frames 23 that connect and fix the rear end side of the frame 21. On this machine body 25, tail wheels 27 are rotatably supported on both ends of a horizontal frame 23 on the rear end side via a pair of wheel vertical axes 26 which are respectively supported so as to be vertically adjustable.

A pair of vertical side frames 29, 29 supported by a support 28 and formed in a dogleg shape are fixed to the base 22 at predetermined intervals, and the lower links 12, 12 are respectively bent at their bent portions. Connecting pins 30, 3 for connecting with
It has 0. A tool bar 31 is fixed between the tops of the vertical side frames 29, 29, and a top link bracket 32 is fixed via the tool bar 31. A connection pin 33 for connecting the top link 13 is provided at one end of the top link bracket 32.

A hydraulic pump 35, a hydraulic operating valve 36 for operating the flow of pressure oil discharged from the hydraulic pump 35, and a fertilizer pump 37 are arranged between the vertical side frames 29, 29.

A bearing 39 fixed on the base 22
The input shaft 40, which is rotatably supported by the
1 is connected to the PTO shaft 16 through
It is driven by the power transmitted from. This input shaft 40
A pulley 42 and a pulley 43 are fixed to the.
A belt 46 is stretched between the pulley 42 and a pulley 45 fixed to the hydraulic pump 35. A belt 49 is stretched between the pulley 43 and the pulley 47 fixed to the fertilizer pump 37. Therefore, the rotation of the input shaft 40 causes the hydraulic pump 35 and the fertilizer pump 37 to rotate together.

The mounting bracket 50 is fixed to the tool bar 31. The mounting bracket 50 is provided with a support shaft (not shown) whose axial center is supported parallel to the traveling direction of the tractor 5. The support plate 51 is supported on the support shaft so as to be swingable by an angle α in a direction (horizontal direction) orthogonal to the traveling direction of the combine 5. A support shaft 52 is fixed to the upper end of the support plate 51 in such a manner that its axis is orthogonal to the traveling direction of the combine 5 and is horizontal. This support shaft 52
Bearings 53 are rotatably supported at both ends of the.
The fertilization frame 55 is fixed to the bearing 53, and the support shaft 5
The tractor 5 is swingably supported by an angle β in the traveling direction (front-rear direction) of the tractor 5.

A discharge pump 5 is provided on the fertilizer application frame 55.
6 and a discharge switching valve 57 are arranged, and a conversion link 59 for operating the discharge pump 56 and the discharge switching valve 57 in cooperation with each other is swingably supported by a shaft 60.
In the fertilizer application frame 55, a cylinder 61 for projecting a piston rod downward and a support cylinder 63 for supporting a support rod 62 slidably in the vertical direction are supported in parallel at predetermined intervals. The piston rod of the cylinder 61 and the lower end of the support rod 62 are integrally connected by a holder 65, and a nozzle 66 is fixed to the holder 65.

A roller 69 is rotatably supported on the upper end of the support rod 62 via a holder 67.
Then, when the support rod 62 descends, the roller 69 comes into contact with the conversion link 59 and rotates the conversion link 59, whereby the discharge pump 56 and the discharge switching valve 5 are rotated.
7 can be operated in an interlocking manner.

The hydraulic oil tank 70 is fixed on the horizontal frame 23 via a holder 71. The oil in the hydraulic oil tank 70 is sucked and pressurized by the hydraulic pump 35 through the filter 72, supplied to the cylinder 61 through the hydraulic operation valve 36, and after driving the cylinder 61, the hydraulic oil tank is discharged from the cylinder 61. Returned to 70.

The fertilizer tank 75 is placed on the horizontal frame 23 via the plate 73, is arranged at a predetermined interval, as shown in FIG. 4, and has a pair of upper ends bent so as to be separated from each other. It is fixed to the horizontal frame 23 by a holder 76. Therefore, a gap A through which a finger can pass can be formed between the lid 77 of the fertilizer tank 75 and the holder 76, and the lid 77 can be easily opened and closed.

As shown in FIG. 5, the fertilizer tank 75 is formed with an internal screw 79 into which the lid 77 is screwed, at the opening thereof. A filter 80 is arranged below the inner screw 79, and a lid 77 is screwed onto the upper portion. Therefore, the depth of the inner screw 79 is set to a depth at which the gap G is formed between the filter 80 and the lid 77 when the lid 77 is tightened while the filter 80 is arranged.

As shown in FIG. 6, a plurality of (four in FIG. 6) protrusions 81 are formed on the outer peripheral surface of the flange portion formed on the upper portion of the filter 80. The height of the flange portion with respect to the upper end surface is formed to be different according to the pitch. Then, as shown in FIG. 7, the relationship between the inner screw 79 and the protrusion 81 is that the pitch of the inner screw 79 is P, the height of the thread is H, and the protrusion 8
When the thickness of 1 is W and the length is L, the pitch P and the thickness W
Is P> W, and the relationship between height H and length L is
The setting is such that H> L, which facilitates replacement of the filter 80.

On the side surface of the fertilizer tank 75, the suction end is located at the lower end of the front end of the fertilizer tank 75, that is, the lowermost portion of the fertilizer tank 75 when the fertilizer application device 20 is raised by the three-point link device 11. A mouth is formed, and a T-shaped communication pipe 82 is attached to this suction mouth. A drain hose 83 is connected to one of the communication pipes 82,
The suction hose 85 is connected to the other. That is, the drain hose 83 and the suction hose 85 are arranged so as to be located in the space formed between the fertilizer tank 75 and the tail wheel 27.

As shown in FIG. 2, the suction hose 85 is drawn forward through the space between the frame 21 and the fertilizer tank 75, and is attached along the support 28.
It is connected to the fertilizer pump 37. Then, the fertilizer is sucked from the fertilizer tank 75 through the suction hose 85 to the fertilizer pump 37, and then the fertilizer pump 37 discharges the pump 5
6. It is sent to the nozzle 66 through the discharge switching valve 57.

The tip of the nozzle 66 is shown in FIG.
As shown in FIG. 3, a rubber cover 86, which is formed in a cylindrical bellows shape, is attached.

With such a structure, the fertilizer application device 20 is connected to the rear part of the tractor 5 via the three-point link device 11, and the PTO shaft 16 of the tractor 5 and the input shaft 40 of the fertilizer application device 20 are connected via the joint shaft 41. Connect. Then, by adjusting the position of the wheel vertical axis 26 and adjusting the height of the tail wheel 27 with respect to the frame 21, the height of the nozzle 66 with respect to the ground of the field, that is, the driving depth of the nozzle 66 with respect to the ground is adjusted. .

The fertilizer tank 75 is placed on the plate 73, fixed by the holder 76, and the drain hose 83 is connected to one end of the communication pipe 82 and the suction hose 85 is connected to the other end. At this time, since the communication pipe 82 is installed on the side surface of the fertilizer tank 75 (the surface facing the tail wheel 27), the drain hose 83 and the suction hose 85 can be easily connected.

Then, the suction hose 85 is connected to the fertilizer pump 37 through between the frame 21 and the fertilizer tank 75. Next, the lid 77 of the fertilizer tank 75 is removed, the filter 80 is attached to the inner screw 79, and then the fertilizer tank 75
Add fertilizer to and close the lid 77.

When the tractor 5 is started, the PTO shaft 16 operates, the input shaft 40 is driven via the joint shaft 41, and the hydraulic pump 35 and the fertilizer pump 37 are driven. Then, the hydraulic pump 35 sucks up oil from the hydraulic oil tank 70 through the filter 72, pressurizes it, and pressurizes it.
Supply to 6. On the other hand, the fertilizer pump 37 sucks the fertilizer through the suction hose 85 and supplies it to the discharge pump 56.

At a required position during forward traveling of the tractor 5,
When the hydraulic operation valve 36 operates to operate the cylinder 61, the piston rod of the cylinder projects downward, and the holder 65 is lowered. At this time, the nozzle 66 fixed to the holder 65 and the support rod 62 also descend at the same time. Nozzle 6
When 6 descends, first, the lower end surface of the cover 86 comes into contact with the ground, and its descending is blocked. When the nozzle 66 further descends, as shown in FIG. 9, the cover 86 is compressed in place, and only the nozzle 66 is driven into the ground.

At the same time, as the holder 67 descends, the roller 69 comes into contact with the conversion link 59, and further the conversion link 59.
By pushing and swinging, the discharge pump 56 and the discharge switching valve 57 are operated. Then, the discharge pump 56
Sends a fixed amount of fertilizer sent from the fertilizer pump 37 toward the discharge switching valve 57. At this time, if the discharge switching valve 57 is open, the discharge pump 5
The fertilizer discharged from 6 is supplied to the nozzle 66 through the discharge switching valve 57, discharged from the tip of the nozzle 66 into the ground, and the fertilizer can be poured into the ground.

At this time, even if the fertilizer discharge pressure from the nozzle 66 is high, and the fertilizer discharged into the ground is blown up to the surface of the earth, since the periphery of the nozzle 66 is covered with the cover 86, the fertilizer is spread to the surroundings. It does not scatter and affect crops and workers. Also, the fertilizer discharge timing is fast, and the nozzle 6
Even if fertilizer is discharged from the nozzle 66 before 6 is driven into the ground, the cover 86 can prevent the fertilizer from scattering, as shown in FIG.

While the fertilizer applicator 1 is running, the nozzle 66
When the fertilizer is poured into the ground to inject the fertilizer, as shown in FIG. 2, the nozzle 66 swings around the support shaft 52 in the arrow β direction to prevent the nozzle 66 from being damaged. Further, when the fertilizer applicator 1 meanders, as shown in FIG. 3, the nozzle 66 swings in the direction of arrow α around the support shaft fixed to the mounting bracket 50 to prevent the nozzle 66 from being damaged.

When the pouring of a predetermined amount is completed, the hydraulic operation valve 36 is switched, the cylinder 61 raises the piston rod, and the nozzle 66 and the support rod 62 via the holder 65.
Raise. Then, the nozzle 66 escapes from the ground and returns to the original position. On the other hand, when the roller 69 supported by the holder 67 rises due to the rise of the support rod 62, the pressing force against the conversion link 59 gradually decreases, and finally the roller 69 separates from the conversion link 59. Then, the conversion link 59 is restored to the original position by the repulsive force of the discharge pump 56 and the discharge switching valve 57.

When fertilizer application is completed, the tractor 5 is stopped, a fertilizer container (not shown) is placed near the fertilizer tank 75, the drain hose 83 is connected to the fertilizer container, and then the lift link rod 15 is operated. Fertilizer application 2
Increase 0. At this time, the fertilizer application device 20 is shown in FIG.
As indicated by the dotted chain line, the tail wheel 27 side rises so that it becomes higher. Therefore, the fertilizer tank 75 is also inclined so that the rear end side becomes higher. That is, the position where the communication pipe 82 is attached becomes the lowermost portion. Therefore, the fertilizer in the fertilizer tank 75 flows into the fertilizer container through the drain hose 83 and is collected.

In the above embodiment, the nozzle 6
Although the case where the cylindrical bellows-shaped cover 86 is provided at the tip of 6 has been described, for example, as shown in FIG. 10, a conical bellows-shaped cover 87 can be used.

By using such a cover 87, it is possible to cover a wide range of the ground surface. Therefore, as shown in FIG. 11, not only the fertilizer blown up from the vicinity of the nozzle 66 but also a position away from the nozzle 66 is blown. It is possible to prevent the rising fertilizer from scattering.

The covers 86 and 87 have been described as bellows type ones, but slide type ones movable in the axial direction of the nozzle 66 may be used.

Further, instead of the covers 86 and 87, FIG.
It is also possible to use a cover 89 formed in a cylindrical shape and having a slit formed from the lower end to a required position as shown in FIG.

By using such a cover 89, it is possible to improve the followability of the cover 89 to the ground surface when the ground surface has irregularities as shown in FIG.

The hydraulic oil tank 70 and the fertilizer tank 75
Before the above, a guard member may be arranged so that the drain hose 83 is protected by the guard member.

[0042]

As described above, according to the present invention, the fertilizer in the tank can be completely discharged by raising the tank by the link device. Also, the suction hose and drain hose can be protected, and moreover,
The space can be effectively used.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which the fertilizer application apparatus of the present invention is connected to a tractor.

FIG. 2 is a side view of the fertilizer application device.

FIG. 3 is a rear view of the fertilizer application device.

FIG. 4 is a rear view of the fertilizer tank.

5 is an enlarged partial sectional view of a lid portion of the fertilizer tank in FIG.

FIG. 6 is a perspective view of the filter in FIG.

FIG. 7 is an enlarged view of the inner screw portion in FIG.

FIG. 8 is a side sectional view showing a state in which a cover at the tip of the nozzle is provided.

9 is a side sectional view showing the action of the cover in FIG.

FIG. 10 is a side sectional view showing a second embodiment of the cover provided at the tip of the nozzle.

11 is a side sectional view showing the action of the cover in FIG.

FIG. 12 is a side sectional view showing a third embodiment of the cover provided at the tip of the nozzle.

13 is a side sectional view showing the action of the cover in FIG.

[Explanation of symbols]

1 ... Fertilizer 5: Traveling vehicle (tractor) 11 ... Link device (3-point link device) 20 ... Fertilizer 21 ... Frame 27 ... tail wheel 75 ... Tank (fertilizer tank) 83 ... Drain hose 85 ... Suction hose

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshikazu Umeno             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. F term (reference) 2B052 BC05 BC07 BC10 CA13 EA14                       EC03 EC06 EC09                 2B121 CB15 CB24 CB32 CB42 CB47                       CB51 CB61 CB66 CB69

Claims (3)

[Claims] 1. A fertilizer applicator in which a fertilizer applicator is connected to a rear side of a traveling machine body via a link device, wherein the fertilizer applicator has a tank and a drain hose for discharging fertilizer in the tank. A fertilizer applicator, wherein the fertilizer applicator is arranged at a position which becomes the lowermost part of the tank when the fertilizer applicator is raised by a link device. 2. A suction hose for guiding fertilizer in the tank to a nozzle, the suction hose being arranged between the frame of the fertilizer applicator and the tank. Fertilizer applicator. 3. The drain hose is provided so as to communicate with the suction hose, and the drain hose is arranged between the tail wheel of the fertilizer application device and the tank. Fertilizer applicator.