JPS6123286Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crushed soil leveling harrow, which forms a seed bed or a transplant bed.

When forming a seed bed or a transplant bed, it is preferable for the growth of crops to use finely crushed soil in the surface layer and to form layers of larger soil clods in the lower layer.

Therefore, regarding this type of work machine,
Conventionally, for example, Japanese Utility Model Application Publication No. 55-152901 and Japanese Utility Model Application Publication No. 55-123208 are known. The working machines described in both of the above publications have a structure in which a rotary work body is provided at the rear part of a desk plow. However, according to this structure, after plowing is reversed as a large lump with a desk plow, this lump is immediately pulverized by a rotary work unit, so that the pulverized soil is left on the floor after being plowed as a large lump. It often falls and becomes mixed with this, and there is a problem in that the surface layer is not necessarily pulverized soil, and the lower layer is often not formed into larger layers of soil.

The present invention was developed in view of the above points, and it crushes the soil mass that has been reversed in plowing at the same time as bed compaction while adapting to changes in the tilled soil surface, and further finely crushes the surface layer. In this way, the purpose is to level the ground by forming layers of soil mass from the surface layer to the lower layer to form a desirable seed bed or transplant bed.

This invention has a desk plow 1 from the front to the rear.
0, the crushing wheel 17 and the rotary work body 29 are arranged in sequence, the desk plow 10 is provided in a fixed position, and the crushing wheel 17 and the rotary work body 29 at the rear end are arranged vertically independently of each other. It is installed so that it can swing freely.

Then, the soil crushing wheel 17 and the rotary work body 29 crush and level the soil on their respective working surfaces while responding to the unevenness of the cultivated soil surface, thereby forming a seeding bed or transplanting bed in a condition favorable for crop growth. It is something that

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

In the figure, reference numeral 1 denotes a main body frame, and bearing bodies 3 are protruded from the rear ends of side frames 2 on both sides of the main body frame 1, and a horizontal shaft 4 extends over the bearing bodies 3 on both sides. An intermediate frame 6 is stretched between the intermediate portion and the front frame 5 of the main body frame 1.

Next, supporting frames 7 and 8 are integrally vertically installed at the intermediate portions of the side frames 2 on both sides and toward the front of the intermediate frame 6, and one side frame 2 and one side of the intermediate frame 6 relative to the supporting frames 7 and 8 are vertically provided. Both ends of a rotating shaft 11 of one desk plow 10 are rotatably attached to the support frame 8 via a bearing body 9, and the other side frame 2 and the intermediate frame 6 are connected to the other side frame 2 and the intermediate frame 6 thereto. Both ends of a rotating shaft 14 of the other desk plow 13 are rotatably attached to the support frame 8 on the other side via a bearing body 12. The desk plows 10, 13 on both sides are constructed by integrally attaching a large number of desks 15 at predetermined intervals to the rotating shafts 11, 14, and the desk plows 10, 13 on both sides are approximately They are arranged in an eight-figure shape.

Next, the upper end portions of a rotating support frame 16 are attached to both ends of the horizontal shaft 4 so as to be rotatable in the vertical direction, and both ends of a shaft rod 18 are rotatable between the lower ends of the rotating support frames 16 on both sides. A crushing wheel body 17 consisting of a plurality of crushing wheels 17a is attached to the shaft rod 18 so as to be movable. Further, the lower end portions of the support rods 19 are rotatably attached to the middle of the rotating support frames 16 on both sides, and the upper portions of the support frames 19 on both sides protrude from the rear ends of the side frames 2 on both sides of the main body frame 1. A coil spring 22 is wound around the support rod 19 between the guide piece 20 and the rotating support frame 16, and the upper end of the support frame 19 A stopper (not shown) is attached to prevent the support rod 10 from coming out of the guide hole 21. The rotation support frames 16 on both sides are normally supported by coil springs 2.
2 through support rods 19, and when the soil crushing wheel 17 receives resistance from the unevenness of the tilled soil surface, it moves counterclockwise in FIG. 2 against the coil spring 22 around the horizontal axis 4. It is designed to rotate in the direction.

Next, the front ends of the extension support frames 23 are attached to both ends of the horizontal shaft 4 so as to be rotatable in the vertical direction, and the machine frame 24 is fixed between the rear ends of the extension support frames 23 on both sides. A chain case 25 is attached to one end of the frame 24.
At the same time, a bracket 26 is attached to the other end of this machine frame 24, and between this bracket 26 and the chain case 25, a large number of tilling claws 28 are provided radially protruding from a tilling shaft 27. A rotary work body 29 is rotatably attached. Further, a transmission 30 is attached to an intermediate portion of the machine frame 24, and an output shaft 31 of this transmission 30 is protruded from one side of the machine frame 24 to the upper part of the chain case 25, and is attached to this protruding end. A chain 34 is suspended between a sprocket 32 and a sprocket 33 of a tilling shaft 27 protruding from the lower part of the chain case 25. Further, an extension input shaft 37 is protruded to the front of the main body frame 1 via a universal joint 36 to the input shaft 35 that protrudes to the front of the transmission 30. Further, a cover body 38 is provided above the rotary work 29, and this cover body 3
A leveling plate 40 is rotatably attached to the rear end of 8 via a hinge 39, and this leveling plate 40 is supported in a vertically adjustable and vertically movable manner via support rods 41 attached to both sides. ing. Further, one end of a chain strip 42 is attached to the middle of the extension support frame 23 on both sides, and the other end of the chain strip 42 on both sides is adjustable to a column 43 erected on the front frame 5 of the main body frame 1. The rotary work body 20 is adjusted and supported at a predetermined height by the chains 42 on both sides through the extension support frames 23 on both sides, and prevents rotation in the clockwise direction. . In addition, drawing width 44
is a connecting frame that connects to a towing vehicle such as a tractor.

In this structure, during work, the working surfaces of the desk plow 10, the earth crushing wheel 17, and the rotary work body 29, which are arranged sequentially from the front to the rear, are substantially the same surface, or these work bodies are placed on the same surface. Set the rear side shallower in sequence. In addition, the connecting frame 44 of the main body frame 1 is attached to the towing vehicle.
At the same time, the extended input shaft 37 of the main body frame 1 is connected to the output part of this towing vehicle.

Next, when the towing vehicle is driven and the rotary work body 29 is driven in conjunction, the main body frame 1 is towed, and the field is plowed and reversed as a block of a predetermined size by the desk plow 10, and this is continued. The soil crushing wheel 17 and the rotary work body 29 sequentially plow and crush the soil multiple times, and the surface layer of the soil is finely crushed, whereby the subsoil is gradually formed into layers of larger soil clods. At this time, the large soil clod that has been plowed and reversed by the desk plow 10 is crushed by the crushing wheel 17, but in this case, during the crushing operation of the crushing wheel 17, the soil clod is pressed downward and the soil clod is At the same time as the bed is compacted against the floor surface after reversing tillage, the upper part of the soil is crushed so as to be intermediately compacted, and this crushed soil is further pulverized by the rotary working body 29. Therefore, there is a lot of pulverized soil on the floor surface, which prevents it from falling and mixing, and the surface layer is fine and the bottom layer is gradually coarser.

In addition, when the cultivated soil surface a of the field has an uneven surface b, as shown in FIG. The soil is tilled and crushed while rocking, i.e. moving up and down, to level the surface. Thus, a seed bed or transplant bed is formed which consists of a soil layer that is entirely favorable for the growth of crops.

According to the present invention, a desk plow, a crushing wheel, and a rotary work body are sequentially arranged from the front to the rear, and the desk plow is provided in a fixed position, and the crushing wheel and the rearmost rotary work body are mutually arranged. Since the soil crushing wheel and the rotary work body are provided to be able to swing independently in the vertical direction, the soil crushing wheel and rotary work body can swing independently at each position to adapt to the unevenness of the cultivated soil surface, ensuring even and reliable crushing of the soil. At the same time, the rotary working body at the rearmost part further crushes the soil to ensure that the surface is evenly leveled.

In addition, a soil crushing wheel is installed at the front of the rotary work body to crush large soil clods that have been plowed and reversed by the desk plow, so that when the soil clods are pressed and compacted to the floor, they are simultaneously compacted. The soil is crushed, and therefore the finely crushed soil by the rotary work body can be reliably prevented from falling onto the floor below the intermediate tightening portion. Therefore, as a whole, the surface layer is dense and the lower layer is coarser, so that it is possible to easily form a seed bed or transplant bed that is favorable for the growth of crops.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a plan view of a crushing earth leveling harrow, Fig. 2 is a side view of the same, and Fig. 3 is an explanatory view of the action of the same. 10... desk plow, 17... crushing wheel, 2
9...Rotary work body.

Claims (1)

[Scope of utility model registration request] A desk plow, an earth crushing wheel, and a rotary work body are sequentially arranged from the front to the rear, and the desk plow is provided in a fixed position, and the earth crushing wheel and the rotary work body swing vertically independently of each other. A soil leveling harrow that is characterized by its ability to be installed freely.