JPH09262007A - Middle tillage fertilizer applicator - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To develop a middle tillage fertilizer applying apparatus for continuously fertilizing soil into the soil which has been tilled at the same time as continuous tilling work using a crawl type tiller. [Solution] For traveling bodies that travel in the front-back direction,
A vertical rotation shaft that rotates in the horizontal direction is rotatably supported, and on the rotation shaft,
A spiral boring blade that turns at a substantially predetermined pitch along a virtual cylinder is attached to support the vertical rotary shaft and the spiral boring blade so as to be capable of reciprocating in the up-and-down direction. The above-mentioned spiral digging blade is made to be able to perform the above-mentioned middle tillage work, and a cylindrical fertilizer discharge pipe that vertically reciprocates together with the spiral digging blade is provided to discharge the fertilizer into the soil. . When the fertilizer discharge pipe is lowered and grounded, the fertilizer discharge pipe is slid upward for a predetermined distance to communicate with the fertilizer discharge port to apply fertilizer. Close.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a middle tillage fertilizer applicator for applying continuous fertilization to soil which has been tilled at the same time as continuous tillage work by using a crawling type tiller equipped with a spiral cutting blade on a vertical rotary shaft.

[0002]

2. Description of the Related Art Conventionally, a vertical rotating shaft that rotates in a horizontal direction is axially supported by a traveling body that is mounted on a tractor and that travels in the front-rear direction, and the rotating shaft has a substantially predetermined pitch along a virtual cylinder. A spiral spiral cutting blade is mounted to rotate, and the vertical rotary shaft and spiral spiral cutting blade are supported so as to be able to reciprocate in the vertical direction. The tilling device such as an orchard as described above is disclosed in Japanese Utility Model Application Laid-Open No. 4-1297.
It is well known from Japanese Patent Publication No. 03.

The applicant of the present invention has proposed the following crawl type middle tillage device which is an improvement of the above-mentioned prior art. That is, as shown in FIG. 4, one end of the main body frame B is rotatably supported in a vertical direction on a traveling body A that is mounted (bellied) on a tractor (not shown) and travels in the front-rear direction. The other end of the body frame B is connected to the hydraulic cylinder C.
The main body frame B is vertically movable between a working position and a non-working position. The body frame B has a pair of left and right plowed parts D, D, and a pair of front and rear rotary arms E, E.
Supported by the rotary drive unit F, one of the bases of the rotary arm E is rotated by the rotary drive unit F.

A pair of front and rear vertical rotating shafts G and G which rotate in the horizontal direction are axially supported by the above-mentioned tillage part D, and the rotating shafts G and G are supported.
In addition, spiral advancing blades H, H that rotate at a substantially predetermined pitch along a virtual cylinder are attached. A hydraulic motor I is attached to one side of the rotary shafts G, G, and power is transmitted to the other rotary shaft G by a chain transmission system J. Then, the rotation drive unit F
When the rotating arms E, E are rotated by, the left and right plowed parts D, D reciprocate up and down while alternately rotating like swimming crawls, and the hydraulic cylinder C moves the body frame B in a working state. By moving and moving the body A, continuous cultivation work is performed by the spiral digging blades H, H.

[0005]

In the above crawl type medium tilling device, the vertical rotary shaft G and the spiral cutting blade H are reciprocally moved in the vertical direction to efficiently perform continuous tillage work in the root region of the fruit tree. When fertilizers or soil improvers are applied before this tillage, they are generally sprayed all over the ground surface. If fertilizer or soil conditioner was sprayed over the entire surface, there was a problem that many runoff and adversely affect the environment.

On the other hand, by applying a fertilizer or a soil conditioner into the root region of the fruit tree, its utilization efficiency can be increased, and as a result, high quality fruit trees can be produced and the production cost can be reduced. It turns out. Further, by applying the fertilizer and the soil improving agent to the root region of the fruit tree, the runoff of the fertilizer and the soil improving agent can be reduced and the environmental pollution can be reduced. Furthermore, in the above-mentioned crawl-type medium tilling device, the root area soil is locally tilled, and excessive root cutting is not performed.

The present invention has been made in view of the above circumstances, and by incorporating a fertilizer application apparatus into the crawling-type medium tilling device, continuous local tillage work is performed, and at the same time, a constant depth in the medium tilled soil is maintained. It is an object of the present invention to provide a middle tillage fertilizer application device capable of performing fertilizer application (application of soil improver).

[0008]

In order to achieve the above object, the present invention provides: A vertical rotating shaft that rotates in a horizontal direction is rotatably supported on a traveling body that travels in the front-rear direction, and a spiral excavating blade that rotates at a substantially predetermined pitch along a virtual cylinder is attached to the rotating shaft. A shaft and a spiral digging blade are supported so as to be able to reciprocate in the up-and-down direction, and a middle cultivating device is configured to enable continuous cultivating work with the spiral digging blade along with the traveling movement of the traveling body, and inside or around the spiral digging blade. In addition, a cylindrical fertilizer discharge pipe that vertically reciprocates together with the spiral cutting blade is provided to discharge the fertilizer into the soil.

[0009] When the fertilizer discharge pipe is lowered and grounded, the fertilizer discharge pipe is slid upward for a predetermined distance to communicate with the fertilizer discharge port to apply fertilizer. It is characterized by being configured to be closed.

[0010]

With the above construction, the middle tillage fertilizer application apparatus of the present invention comprises: a. Inside or around the spiral cutting blade, a cylindrical fertilizer discharge pipe that reciprocates in the vertical direction together with the spiral cutting blade is provided to discharge fertilizer into the soil that has been plowed, so that continuous spiraling work with the spiral cutting blade can be performed. At the same time, fertilizer is discharged from the fertilizer discharge pipe to a predetermined depth position in the soil cultivated therein, and fertilizer is applied to effectively act on the crop.

B. The fertilizer discharge pipe slides up a predetermined distance to communicate with the fertilizer discharge port to apply fertilizer due to the resistance when descending and grounding. By doing so, the fertilizer discharge pipe moves up and down with the vertical movement of the spiral digging blade, and when the spiral digging blade is performing middle plowing work, fertilizer is applied from the fertilizer discharge pipe and the spiral digging blade is raised. Fertilizer application from the fertilizer discharge pipe is automatically stopped when the middle tillage work is not performed.

[0012]

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 is a medium tillage fertilizer application incorporated in the above-mentioned crawl type medium tillage device. This medium tillage fertilizer applicator 1 is provided with a main body frame 2 extending in the front-rear direction at the left and right central portions of the machine body. This body frame 2 is
An extension / contraction operation of a hydraulic cylinder, which is mounted on an agricultural tractor (not shown) and pivotally supports a rear end portion of the traveling body 3 so as to be vertically rotatable and a front end side of which is interposed between the main body frame 2 and the traveling body 3. Thus, it is supported so that it descends when working and rises when not working. Then, the traveling body 3 and the middle-plow fertilizer application device 1 move in the arrow direction to perform work.

Working device support frames 5 and 5 are provided on both left and right sides of the main body frame 2 via a pair of front and rear rotary arms 4 supported by a drive rotary shaft 4a and a rotary shaft 4b which are pivotally supported by the main body frame 2. It is supported with a phase difference of 180 °. Power is transmitted from the hydraulic motor 6 to the drive rotation shaft 4a via the belt transmission system 7, and the work device support frame 5 is moved up and down while rotating in the arrow direction via the rotation arm 4. A pair of front and rear cultivating parts 8 and a fertilizer applying part 9 arranged between the cultivating parts 8 are attached to the working device support frames 5, respectively.

As shown in FIG. 2 and FIG. 3, the above-mentioned tillage parts 8 and 8 are vertical rotary shafts 11 and 11 which rotate vertically downward from bearings 10 and 10 supported by a working device support frame 5, respectively. And a spiral excavating blade 1 which pivotally supports the rotary shafts 11 and 11 and swivels along an imaginary cylinder at a substantially predetermined pitch.
I wear 2 and 12. Then, a gear box 13a having a hydraulic motor 13 attached is provided above the front side tillage part 8 to drive the spiral cutting blade 12 to rotate, and the chain from the bearing part 10 of this tillage part 8 to the bearing part 10 at the rear side. Transmission system 1
The power is transmitted via No. 4.

The fertilizer application section 9 is a work device supporting frame 5.
A fertilizer hopper 15 for accommodating a fertilizer or a soil improver F is provided on the upper part of the fertilizer conduits 15 extending downward from the fertilizer conduit 15.
An outer cylinder 16 extending in the vertical direction is fixed to the terminal end of a with the fertilizer discharge port 18 open. An inner cylinder (fertilizer discharge pipe) 17 is fitted on the inner peripheral side of the outer cylinder 16 so as to be vertically slidable at a sliding interval S. The outer cylinder 16 and the inner cylinder 17 are the spiral cutting blades 12,
It may be arranged between 12 (around), or may be arranged at the center of rotation (inside) of the spiral cutting blade 12.

On the upper part of the inner cylinder 17, the fertilizer discharge opening / closing portion 19 which is the inner cylinder 17 itself for opening and closing the fertilizer discharge opening 18 when the inner cylinder 17 slides up and down, and the communication opening 19a.
Are provided adjacent to each other. In addition, at the lower end of the inner cylinder 17,
A fertilizer application port 20 for releasing the fertilizer that has fallen into the inner cylinder 17 to the field and applying the fertilizer is open.

Then, as shown in FIG. 2, when the spiral boring blade 12 is not performing the tilling work, the inner cylinder 17 is slid downward by its own weight, and the fertilizer discharge port opening / closing section 19 causes the fertilizer discharge port 18 to move. Closed, fertilizer does not fall and fertilizer is not applied. On the contrary, as shown in FIG. 3, when the spiral cutting blade 12 is performing the tillage work, the inner cylinder 17 is spaced upwardly from the outer cylinder 16 by the resistance S when the lower end of the inner cylinder 17 is grounded.
The fertilizer outlet opening / closing part 19 opens the fertilizer outlet 18 to communicate with the communication port 19a, and the fertilizer falls into the inner cylinder 17 and releases the fertilizer from the fertilizer inlet 20 to perform fertilizer application. .

Here, the working device support frame 5, the middle tillage portions 8, 8, the fertilizer application portion 9 and the like move circularly in the forward direction by the rotary arms 4 and 4 while moving in the direction of the arrow. Circumferential velocity of movement (while the tilling sections 8 and 8 and the fertilizer section 9 are penetrating into the soil, the direction is opposite to the traveling direction of the machine body)
By synchronizing, the movements of the middle tillage sections 8 and 8 and the fertilizer section 9 are apparently only vertical movements. However, since it is difficult to completely synchronize the above two speeds, the middle tillage sections 8 and 8 and the fertilizer application section 9 are supported slidably in the left-right direction with respect to the working apparatus support frame 5 to absorb the speed difference. I am trying to do it.

Next, the operation of the medium tillage fertilizer applicator 1 configured as described above will be described.

The traveling body 3 of the middle tillage fertilizer applicator 1 is attached to a tractor (bellying), raised to a non-working state by a hydraulic cylinder, and introduced into, for example, an orchard. In an orchard, the hydraulic cylinder is used to lower the middle tillage fertilizing apparatus 1 to a working state, and the middle tillage fertilizing work mainly in a portion where the root of the fruit tree is stretched is locally continuously performed.

The medium tillage fertilizer applicator 1 moves in the direction of the arrow, and drives the driving rotary shaft 4a to rotate in the moving direction of the machine via the belt transmission system 7 by means of the hydraulic motor 6 to drive it through the four rotary arms 4. Left and right work device support frames 5,
5. Rotate the plowed parts 8, 8 and the fertilizer application part 9 with a phase difference of 180 °. In the middle tillage parts 8 and 8, the front and rear spiral digging blades 12 are rotationally driven in the digging direction by the hydraulic motor 13 via the gear box 13a and the chain transmission system 14. Then, the left and right plowed parts 8, 8 and the fertilizer application part 9 move vertically while rotating, and are alternately penetrated into the soil with a phase difference of 180 ° and pulled up.

Moving speed of the medium tillage fertilizer applicator 1 and the middle tillage sections 8, 8
The rotation speed of the hydraulic motor 6 is adjusted so that the rotation peripheral speed of the fertilizer application section 9 is synchronized with that of the fertilizer application section 9. However, even when both speeds are not completely synchronized, the middle tillage sections 8, 8 and the fertilizer application section 9 support the working device. By sliding to the left and right with respect to the frame 5,
The speed difference is absorbed.

First, the spiral digging blades 12 and 12 penetrate (dig into) the soil to carry out cultivating work, and then the inner cylinder 17
The lower end portion of the blade contacts the soil and plunges into the soil cultivated by the spiral digging blades 12, 12. When the lower end of the inner cylinder 17 comes in contact with the surface of the cultivated soil and descends, the ground resistance causes the inner cylinder 1 to move.
7 slides upward with respect to the outer cylinder 16 at a sliding interval S, the fertilizer outlet opening / closing part 19 opens the fertilizer outlet 18 to communicate with the communication port 19a, and is accommodated in the fertilizer hopper 15. The fertilizer or soil improver F existing therein is dropped into the inner cylinder 17 through the fertilizer conduit 15a, the fertilizer discharge port 18, and the communication port 19a, and is discharged into the soil from the fertilizer application port 20 for fertilization and application (FIG. 1). And FIG. 3).

Therefore, in the root region of the fruit tree, which is slightly shallower than the depth of the soil deeply plowed by the spiral cutting blades 12 and 12 between the roots extending from the root of the fruit tree to the four sides or around the roots. Fertilization and application of soil improver are performed from the fertilizer application port 20 of the inner cylinder 17, and at the same time as deep tillage near the root, fertilization and soil improver application to a deep position close to the root are performed. . As a result, root growth is promoted by soil softening and at the same time fertilizer absorption or soil improvement around the root is promoted.

When the desired medium tillage fertilization (application of the soil conditioner) by the spiral digging blades 12 and 12 and the inner cylinder 17 is completed and the rotating arms 4 and 4 raise the middle tillage portions 8 and 8 and the fertilizer portion 9. , The spiral digging blades 12, 12 and the inner cylinder 17 are extracted from the soil, and the inner cylinder 17 is contact resistance with the soil when it is extracted from the soil, so that the inner cylinder 17 is slid downward with respect to the outer cylinder 16 at an interval S. The fertilizer outlet 18 is closed by the fertilizer outlet opening / closing portion 19, and the fertilizer or soil improver does not fall into the inner cylinder 17 and fertilizer or soil improver is not applied. By repeating such work, continuous medium tillage fertilization work is performed.

The medium-plow fertilizer application apparatus 1 according to the present invention can be applied not only to orchards but also to perennial crop fields, meadows, lawns, etc.
It can be widely used even in a place where the conventional device cannot perform sufficient work.

[0028]

As described above, according to the tillage fertilizer application apparatus of the present invention, the following effects can be obtained.

[0029] A vertical rotating shaft that rotates in a horizontal direction is rotatably supported on a traveling body that travels in the front-rear direction, and a spiral excavating blade that rotates at a substantially predetermined pitch along a virtual cylinder is attached to the rotating shaft. While supporting the shaft and the spiral cutting blade so as to be able to reciprocate in the up-and-down direction, it enables the continuous movement work of the traveling body along with the traveling movement of the traveling body, and inside or around the spiral cutting blade, along with the spiral cutting blade. Since the fertilizer discharge pipe having a tubular shape that reciprocates in the vertical direction is provided to discharge the fertilizer into the soil, it is possible to apply fertilizer by the fertilizer discharge pipe to a position deeply tilled by the spiral cutting blade. Then, the utilization efficiency of fertilizer can be improved, and as a result, high quality fruit trees can be produced and the production cost can be reduced. Further, by applying the fertilizer and the soil improving agent to the root region of the fruit tree, the runoff of the fertilizer and the soil improving agent can be reduced and the environmental pollution can be reduced. Furthermore, in the medium tillage fertilizer application apparatus of the present invention, the root area soil is locally tilled, and excessive root cutting is not performed, so that the fruit trees are not damaged.

[0030] When the fertilizer discharge pipe is lowered and grounded, the fertilizer discharge pipe is slid upward for a predetermined distance to communicate with the fertilizer discharge port to apply fertilizer. Since it is closed, the fertilizer discharge can be automatically opened and closed in conjunction with the middle tillage work by the spiral digging blade, and the fertilizer work can be stopped, the configuration can be simplified and the operability can be improved. It will be good. In addition, there is no waste of fertilizer and soil conditioner, and effective utilization is promoted.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a middle tillage fertilizer application apparatus according to the present invention.

FIG. 2 (a) is a partial side view showing a state of a fertilizer application section when a spiral cutting blade is not performing middle tillage work, and FIG. 2 (b) is an enlarged sectional view of the same fertilizer application section.

FIG. 3 (a) is a partial side view showing a state of a fertilizer application section when a spiral cutting blade is performing middle tillage work, and FIG. 3 (b) is an enlarged sectional view of the same fertilizer application section.

FIG. 4 is a perspective view of a crawling type tillage device to which the present invention is applied.

[Explanation of symbols]

 1 Fertilizer fertilizer application 2 Main frame 3 Traveling body 4 Rotating arm 4a Drive rotary shaft 4b Rotating shaft 5 Cultivating / fertilizing part support frame 6 Hydraulic motor 7 Belt transmission system 8 Middle plowing part 9 Fertilizing part 10 Bearing part 11 Vertical rotating shaft 12 Spiral excavation Blade 13 Hydraulic motor 13a Gear box 14 Chain transmission system 15 Fertilizer hopper 15a Fertilizer conduit 16 Outer cylinder 17 Inner cylinder (fertilizer discharge pipe) 18 Fertilizer discharge port 19 Fertilizer discharge opening / closing part 19a Communication port 20 Fertilizer opening F Fertilizer or soil improver Sliding distance of inner cylinder (fertilizer discharge pipe)

Claims (2)

[Claims] 1. A spiral excavating blade, which is rotatably supported by a vertical rotating shaft that rotates in a horizontal direction, on a traveling body that travels in the front-rear direction and that turns along a virtual cylinder at a substantially predetermined pitch. Then, the vertical rotary shaft and the spiral digging blade are supported so as to be capable of reciprocating in the vertical direction, and the spiral digging blade is configured to perform continuous cultivating work with the traveling movement of the traveling body. A middle tillage fertilizer application characterized in that a fertilizer discharge pipe having a tubular shape that reciprocates in the vertical direction together with a spiral digging blade is provided inside or around the blade to discharge the fertilizer into the soil. 2. The fertilizer discharge pipe is slid upward by a predetermined distance so as to communicate with the fertilizer discharge port to apply fertilizer due to the resistance when the fertilizer discharge pipe is descended and grounded. The fertilizer applicator according to claim 1, wherein the fertilizer discharge port is closed.