JPS6133851Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a soil tiller and a soil crusher, which forms a field into a situation where crops can easily grow.

One of the conditions that makes it easy for crops to grow is to make the field permeable.
It may be formed in a state that retains breathability. Therefore, when tilling and crushing soil in a field, the above conditions cannot be satisfied if the soil is tilled and crushed with soil of the same size, so the soil clods are formed into uneven sizes, and large clods are formed in the lower layer, small clods are placed in the upper layer, and It is desirable that the surface layer, which is in direct contact with the seeds and the roots of transplanted crops, be formed into fine tilled soil, that is, the soil clods should be formed into larger soil masses as they reach the lower layer.

This idea was created with these points in mind.
A screen is arranged vertically at the rear of the rotary work body that can be angled freely in the up direction, and a plurality of outlets are arranged in parallel in the width direction on this screen, with the lower part being wider than the upper part. By discharging the tilled soil backward through the screen, the soil against the screen is discharged from a predetermined position in the vertical direction of the screen's outlet according to its size, and does not pass through the screen's outlet. Large soil clods fall downward, and among the soil clods that pass through the outlet, the larger ones have a short flying distance, the small ones have a long flying distance, and the thin soil that flows out from the top of the outlet, which is the smallest, has the longest flying distance. Therefore, as the rotary work unit plows and crushes the soil, it is possible to easily form a field in which the particle size is gradually reduced from the lower layer to the upper layer and the surface layer, and the field has excellent water permeability and air permeability, which is favorable for crop growth. The present invention provides a tiller and crusher that can obtain a cultivated field.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

Reference numeral 1 denotes a machine frame, and a transmission 3 having an input shaft 2 is attached to the middle part of the machine frame 1, and a coupling mechanism 4 protruding forward from both sides of the transmission 3 is connected to a three-point suspension mechanism of a tractor. has been done. Further, the upper part of a chain case 6 is fixed to one end of the machine frame 1 via a mounting plate 5, and the upper part of a bracket 7 is fixed to the other end of the machine frame 1. chain case 6
A tilling shaft 8 is rotatably mounted between the lower end of the tilling shaft 8, and tilling claws 9 are provided radially protruding from the circumferential side of the tilling shaft 8 in the axial direction. A rotary work body 10 is configured. Further, one end of the tilling shaft 8 is protruded into the lower part of the chain case 6, and the outer end of the output shaft 11 of the transmission 3 is protruded into the upper part of the chain case 6. A chain 12 is suspended between the shaft 11 and the tilling shaft 8 via sprockets attached to each.

Also, the mounting plate 5 to which the chain case 6 is attached
A rotary work body 1 is placed between the bracket 7 and the bracket 7.
A cover body 13 covering the upper part of 0 is attached,
A leveling plate 15 is attached to the rear end edge of the cover body 13 via a hinge 14 so as to be movable up and down. The upper part of a lifting rod 16 whose lower end is rotatably attached to both sides of the leveling plate 15 is inserted into a support plate 17 projecting rearward from the machine frame 1 so as to be vertically movable.
A coil spring 18 is wound around the lifting rod 16 at the upper and lower portions of the support plate 17. Also, at the rear of the rotary work body 10, the cover body 1
A horizontal shaft 19 is supported at the inner rear end of the rotary work body 10, and a screen 20 for controlling soil discharged from the rotary work body 10 is rotatably mounted on the horizontal shaft 19. As shown in FIG. 3, this screen 20 has a pipe body 21 passing through the horizontal axis 19, and a large number of elongated triangular comb teeth whose lower ends are formed at an acute angle in the axial direction of the pipe body 21. The upper end portions of the comb teeth 22 are arranged side by side, and the upper pipe body 21 side is extremely narrow between the comb teeth pieces 22, and the lower open end side has a large number of outlet ports 23 with wide intervals. .

Next, a support shaft 24 is attached to the front part of the chain case 6 and the bracket 7, and the lower end of an earth-proofing plate 25 made of a rubber plate or the like disposed inside the cover body 13 is attached to the support shaft 24. installed.

In this configuration, the coupling mechanism 4 of the machine frame 1 is coupled to the three-point suspension mechanism of the tractor, and the input shaft 2 of the transmission 3 is coupled to the output shaft of the tractor via a universal joint.

Next, the tractor is driven to pull the tiller and crusher and drive the transmission 3 via the input shaft 2, and the output shaft 11 and chain 1 of the transmission 3
2, the rotary work body 10 is interlocked and driven in the clockwise up-cut direction in the drawing. As a result, the field is removed by the tilling claws 9 of the rotary work unit 10.
At the same time, this tilled soil is lifted up with the rotation of each tilling claw 9 and thrown onto the soil protection plate 25.
The tilled soil is then carried rearward within the cover body 13 and thrown against a screen 20 at the rear, and this screen controls the further discharge of the tilled soil to the rear.

In this case, the screen 20 has each comb tooth piece 22
Since outflow ports 23 of different sizes are formed in the vertical direction, the clod a larger than the outflow ports 23 that is released against the screen 20 and is not destroyed is guided by the comb tooth pieces 22 and falls downward. At the same time, the large soil mass a forms the lower layer, and the soil mass b flows out through the maximum diameter part at the bottom of the outlet 23.
Since the flight distance is short, the soil clod c falls on the soil clod a forming the lower layer, and the soil clod c flowing out through the middle diameter of the outlet 23 has a longer flight distance than the soil clot b, so
The fine soil d, which falls in order from the largest to the intermediate layer consisting of the soil clods b according to the size of its diameter, and further flows out through the minimum diameter part above the middle part of the outlet 23, has a flying distance. Since it is the longest, it is released against the leveling plate 15 and falls sequentially along the inner surface of the leveling plate 15 onto the upper layer made of the above-mentioned soil clods c to form a surface layer made of this fine soil d. Therefore, as the soil falls from the large clod through the outlet ports 23 that are gradually spaced toward the bottom, the field is formed into layers that gradually become coarser from the dense surface layer to the lower layer, improving water permeability and
Breathability is improved. And the above surface layer is a flat plate 1
Leveled by 5.

Next, in the embodiment described above, the screen 20 is rotatably installed vertically, but the present invention is not limited to this. For example, as shown in FIG. One of the adjustment holes 31 bored at the other end of the adjustment rod 30 and the mounting hole 32 of the cover body 13 are connected to each other.
The adjusting rod 30 is attached so that it can be adjusted forward and backward by attaching and removing the bolt 33 to the screen, and by adjusting the adjusting rod 30 forward and backward, the hanging angle of the screen 20 with respect to the rotary work body 10 can be adjusted according to the working conditions in the field, etc. You may also set it. Although each outlet 23 of the screen 20 is formed into a substantially triangular shape by each comb tooth piece 22, the present invention is not limited to this. They may be arranged alternately at intervals, and each outlet made of each of the restraining pieces may be formed so that the upper part is small and the lower part is large.

According to the present invention, a screen is arranged vertically at the rear of a rotary work body that can freely rotate in the up-cut direction, and a plurality of outlet ports are arranged in parallel in the width direction of the screen, with the lower part being wider than the upper part. By discharging the tilled soil backward through the screen by the rotary work body, the soil against the screen is flowed out from a predetermined position in the vertical direction of the screen's outlet according to the size, and the soil is discharged from the screen. Larger soil clods that do not pass through the outlet are dropped downwards, and larger soil clods that pass through the outlet have a shorter flight distance, smaller ones have a longer flight distance, and fine soil that flows out from the smallest upper part of the outlet is Since it has the longest flying distance, it is possible to easily create a field with grain size gradually decreasing from the lower layer to the upper layer and the surface layer as the rotary work unit tills and crushes the soil, which improves crop growth. A field with excellent water permeability and air permeability can be obtained.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Figure 1 is a perspective view of a tiller and crusher, Figure 2 is an explanatory diagram of the same action,
FIG. 3 is a front view of the same screen as above, and FIG. 4 is a side view of a tiller and crusher of another embodiment. 1... Machine frame, 10... Rotary work body, 13
... Cover body, 20 ... Screen, 22 ... Comb tooth piece, 23 ... Outlet.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A machine frame, a rotary work body that is pivoted on the machine frame so as to be able to rotate in an upward direction, and a cover that is attached to the machine frame and covers the upper part of the rotary work body. and a screen that is arranged approximately vertically between the rear of the rotary work body and the rear of the cover body, and has a plurality of outflow ports arranged in parallel in the width direction, with the lower part being wider than the upper part. A tiller and crusher characterized by: (2) Utility model registration claim 1, characterized in that the screen is composed of triangular comb-teeth pieces whose lower ends are formed at an acute angle and arranged side by side in the width direction.
The tiller and crusher described in section. (3) The tiller and crusher according to claim 1 of the utility model registration, characterized in that the screen is vertically installed so that its angle can be adjusted.