JP2013055892A - Rotary tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary tiller which can execute efficient application of fertilizers and tillage suitable for crops, farmlands and fertilizers.SOLUTION: The rotary tiller has a rotary tilling tine unit 14 with a plurality of tilling tines provided on a rotary shaft mounted on a rear part of a tractor for tilling soil. The rotary tiller includes: a guide plate 31 for guiding to pick up top soil which is frontward the rotary tilling tine unit 14 to drop backward the rotary tilling tine unit 14 through the upper side of the rotary tilling tine unit 14; and a fertilizer feed pipe 22 having a fertilizer hopper 21 for storing fertilizers provided on the upper side of the guide plate 31 for extending to frontward the rotary tilling tine unit 14 on the lower side of the guide plate 31 from the fertilizer hopper 21.

Description

  The present invention relates to a rotary tillage device including a rotary tillage claw unit provided with a plurality of tillage claws attached to a rotation shaft so as to be attached to a rear portion of a tractor and raise the ground.

  When plowing with fertilizer, fertilization for crops with deep roots is concentrated in the soil where the crops are rooted rather than the surface of the soil or the shallow part of the ground (hereinafter referred to as “topsoil”). Is efficient. In addition, it is desirable to apply fertilizers in a certain depth of soil such as farmland where fertilizer tends to run out due to rain, such as sloping land, and fertilizer that tends to soar in wind like lime nitrogen.

  As a technique for performing fertilization at a certain depth in the soil, there is a technique in which fertilization pipes are arranged in parallel behind a rotary tillage claw unit of a conventional rotary tiller (see Patent Document 1). However, in this case, the fertilizer cannot be sufficiently stirred in the soil, and the configuration of the fertilizer is complicated.

  In addition, there is a technique in which a fertilizer is sprayed by arranging a conduit at the rear of the subsoiler in front of the rotary tillage claw unit (see, for example, Patent Document 2). In this case, the fertilizer is discharged from the lower end of the subsoiler and is once applied to a relatively deep position in the soil. However, it is agitated by tillage and applied to the vicinity of the ground surface, which is inefficient.

JP-A-1-296912 (first page) Japanese Utility Model Publication No. 6-38406 (first page)

The problem to be solved with the rotary tillage device used when cultivating while applying fertilizer for crops with deep roots is that no fertilizer and tillage means for soil other than topsoil have been proposed. is there.
Therefore, an object of the present invention is to provide a rotary tiller capable of performing efficient fertilization and tillage suitable for crops, farmland, and fertilizers.

The present invention has the following configuration in order to achieve the above object.
According to one aspect of the rotary tiller according to the present invention, a rotary tiller unit including a rotary tiller unit provided with a plurality of tiller claws attached to a rotating shaft so as to be attached to the rear portion of the tractor and lift the ground. As the tractor travels, the apparatus guides the top soil in front of the rotary tillage claw unit to fall over the rotary tillage claw unit and to the rear of the rotary tillage claw unit. A guide plate and a fertilizer supply pipe provided with a fertilizer hopper for storing fertilizer above the guide plate and extending from the fertilizer hopper below the guide plate to the front of the rotary tillage claw unit are provided.

  Further, according to one embodiment of the rotary tiller according to the present invention, the tiller is disposed in front of the rotary tillage claw unit and the guide plate, and the soil is cultivated and shallower than the rotary tillage claw unit. A front rotary tilling claw unit that operates to send soil to the rear via the upper side of the guide plate, and the front end of the guide plate has the rotary tillage so that the top soil cultivated by the front rotary tillage claw unit is fed It can be characterized by extending forward of the claw unit.

  Further, according to one embodiment of the rotary tiller according to the present invention, the tip of the guide plate is provided with a pointed center, and the tip extends to the front so as to bite into the top soil and scoop up the soil. It can be characterized by being provided.

  Moreover, according to one aspect of the rotary tiller according to the present invention, a plurality of feed claws are provided to be attached to the rotation shaft so as to feed the soil placed on the guide plate to the rear of the rotary tillage claw unit. A rotary feed claw unit may be provided.

  Moreover, according to one form of the rotary tiller concerning this invention, the said fertilizer supply pipe | tube located under the said guide plate can be used as a cylinder, and it can provide a screw inside this cylinder.

  Further, according to one aspect of the rotary tiller according to the present invention, the rotary tiller claw unit is pivoted so that the upper end portion is pivotally attached and the lower end portion is pivotable so that the height position can be adjusted. It can be characterized in that it is rotatably mounted on the lower end of the arm.

  Moreover, according to one form of the rotary tillage apparatus concerning this invention, the said guide plate has the uphill part which covers the upper part of the said rotary tillage nail | claw unit, and scoops up soil at the front part, and back | seats soil at the rear part. It can be characterized by having a downward slope part to be dropped.

  Further, according to one aspect of the rotary tiller according to the present invention, it is possible to provide an upright guide portion for preventing the soil that has been scooped up from falling off on both side edges of the guide plate. .

  According to the rotary tiller according to the present invention, since the fertilizer mixed soil fertilized and fertilized can be located under the topsoil, the fertilization and tillage suitable for the growth of the crop, the farmland and the fertilizer are efficiently performed. It has a particularly advantageous effect of being able to.

It is a side view which shows typically the example of the form of the rotary tiller concerning this invention. It is a partially broken top view of the example of a form of the rotary tiller shown in FIG. It is sectional drawing which shows typically the internal structure of the example of a fertilizer supply pipe | tube. It is a side view which shows typically the other example of a rotary tiller concerning this invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a rotary tiller according to the present invention will be described below with reference to the accompanying drawings (FIGS. 1 to 3).
As shown in FIG. 1, the rotary tiller is attached to the rear part of the tractor 1 and mainly includes a tiller 10, a fertilizer 20, and a topsoil guide 30. In FIG. 1, the left and right direction is referred to as front and rear, and the left direction is referred to as a traveling direction.

  The tillage unit 10 includes a main beam 11 including a PTO shaft and a gear case for transmitting the power of the tractor 1 to the rotary tiller, and a gear, a chain, and the like via a transmission shaft extending laterally from the main beam 11 in the traveling direction. A large number of tilling claws are fixed to a rotating arm 12 that is also provided as a pair of transmission cases on the left and right sides that house the power transmission mechanism, and a rotating shaft 13 that is placed horizontally between the lower portions of the pair of rotating arms 12. The rotary tillage claw unit 14 is provided. These are provided in a conventional rotary tiller.

  The fertilizer application unit 20 includes a fertilizer hopper 21 that stores fertilizer, a fertilizer supply pipe 22 that supplies fertilizer to the front of the rotary tillage claw unit 14, and a fertilizer guide pipe 23 that guides the fertilizer of the fertilizer hopper 21 to the fertilizer supply pipe 22. And a screw 25 for moving the fertilizer while stirring it.

  The fertilizer hopper 21 is a known one, and is provided by being attached and fixed to a support frame (not shown) provided on the upper side and the left and right sides of the main beam 11.

  The fertilizer supply pipe 22 is a cylinder as shown in FIGS. 1 to 3, and the upper right end is connected to a fertilizer guide pipe 23 that is hung on the right side of a guide plate 31 described later. The fertilizer supply pipe 22 is disposed horizontally along the rotary shaft 13 in front of the rotary tillage claw unit 11 and is fixed below the guide plate 31. As shown in FIG. 1 and FIG. 3, the fertilizer supply pipe 22 has fertilizer application holes 24 for dropping the fertilizer at a lower portion, and screws 25 so that the fertilizer can be uniformly distributed in the fertilizer supply holes 24. It has. The screw 25 is rotated through a pulley 26 by a belt (not shown) connected to a transmission shaft extending from the main beam 11, and the fertilizer dropped near the connection portion with the fertilizer guide pipe 23 is supplied with the fertilizer supply pipe 22. Move to the back. The fertilizer that has fallen from the fertilizer application hole 24 is stirred into the soil by the rotary tillage claw unit 14 as the tractor 1 travels, and the fertilizer mixed soil 100 is generated. Note that the fertilizer guide tube 23 can be made of a flexible material.

  The topsoil guide unit 30 according to this embodiment includes a guide plate 31, a rotary feed claw unit 32 provided with a plurality of feed claws attached to a rotary shaft 33, and an upright guide unit 34.

  As the tractor travels, the guide plate 31 scoops up the top soil in front of the rotary tillage claw unit 14 and drops it over the rotary tillage claw unit 14 to the rear of the rotary tillage claw unit 11. . As shown in FIGS. 1 and 3, the guide plate 31 is disposed inside the pair of transmission cases (rotating arms 12), is located so as to cover the fertilizer supply pipe 22 and the rotary tillage claw unit 14, and has a distal end portion. 31a is extended forward. The guide plate 31 has a front end portion 31a and an upward slope portion 31b that scoops up the soil at the front portion, and a downward slope portion 31c that causes the soil to fall rearward at the rear portion. The guide plate 31 is made of flexible metal such as iron or aluminum, lightweight plastic, FRP, or the like. Moreover, the guide plate 31 can also be comprised integrally with the fertilizer supply pipe | tube 22 located in the downward direction.

  As shown in FIG. 2, the front end portion 31a of the guide plate 31 is formed in a shape with a sharp center, such as a square shape or a U shape, in order to easily dig into the top soil and scoop up the soil. The A cutting blade 31d can be fixed to the tip 31a for reinforcement. The shape of the cutting blade 31d can be a band shape or a cover shape that fits into the tip portion 31a along the shape of the tip portion 31a. The depth at which the tip 31a scoops up the topsoil may be adjusted according to the condition of the crop or topsoil. For example, the depth adjustment mechanism can be disposed between the main beam 11 and the guide plate 31.

The rotary feed claw unit 32 provided with a plurality of feed claws attached to the rotary shaft 33 can feed the top soil that the guide plate 31 has crawled up to the rear of the rotary tillage claw unit 14 without retaining the top soil on the upper portion of the guide plate 31. Is provided. As shown in FIG. 1, the rotary shaft 33 is rotatably supported by a support frame (not shown) or the like so that the rotary feed claw unit 32 is not in contact with the upper surface of the guide plate 31. Similar to the screw 25, the rotary shaft 33 can be linked to the rotation of the transmission shaft by a belt or the like, or can be rotated in conjunction with the pulley 26 of the screw 25. The rotational speed of the rotating shaft 33 may be approximately the same as the traveling speed of the tractor 1. The shape of the rotary feed claw unit 32 can be configured relatively simply by forming a plurality of strip-like feed claws that extend in the axial direction of the rotary shaft 33 as shown in FIGS. 1 and 2. .
By not allowing the topsoil to stay on top of the guide plate 31, the topsoil can be covered seamlessly over the fertilizer mixed soil 100. In addition, since the topsoil that has been scooped up does not stagnate, it is possible to prevent an increase in the load required to pull the tractor 1.

  As shown in FIGS. 1 and 2, the upright guide portions 34, 34 are approximately the depth of the topsoil that crawls up from the ascending slope portion 31 b to the descending slope portion 31 c at the left and right sides of the guide plate 31. It is continuously formed at the above height. The upright guide portion 34 can prevent the soil that has been scooped up at the front end portion 31 a of the guide plate 31 from falling off in the left-right direction of the guide plate 31.

  With the structure of the topsoil guide unit 30 including the guide plate 31, the rotary feed claw unit 32, and the upright guide units 34 and 34, the topsoil is scooped up as the tractor 1 travels, and the rear side of the rotary tillage claw unit 14. Sent to. Thereby, since fertilizer which is fertilized and cultivated can be covered without giving fertilizer unnecessary or easily scattered to the top soil, efficient fertilization is possible.

  Next, in addition to the embodiment shown in FIGS. 1 to 3, an embodiment provided with another rotary tillage claw unit (hereinafter referred to as “front rotation tillage claw unit”) 41 in front of the rotary tillage claw unit. This will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the structure equivalent to the structure demonstrated above, and detailed description is abbreviate | omitted.

  Like the conventional rotary tillage claw unit, the front rotary tillage claw unit 41 cultivates soil by rotating the rotation shaft from the main beam 11 through a transmission shaft (not shown) and a power transmission mechanism in the front conduction case 42. To do. This front rotary tillage claw unit 41 cultivates the top soil shallower than that by the rotary tillage claw unit 14. The depth at which the front rotary tilling unit 41 tills the topsoil can be adjusted by providing a height position adjusting mechanism or changing the length and size of the tilling nail according to the crop.

  The soil rolled up by the front rotary tillage claw unit 41 passes through the upper part of the rotary tillage claw unit 14 by the guide plate 31 and is sent backward. Since the fertilizer supply pipe 22 is located under the guide plate 31, the fertilizer that is unnecessary or easily scattered is not fed to the top soil, and is fed rearward, fertilized, and cultivated by the rotary tillage claw unit 14. The fertilizer mixed soil 100 can be covered. This creates a well-plowed two-layer soil.

  Further, in the embodiment according to the present invention, as shown in FIG. 4, the rotary tillage claw unit 14 is pivoted so that the upper end is pivotally attached and the lower end can be moved up and down so that the height position can be adjusted. The rotating arm 12 is rotatably attached to the lower end portion thereof.

  A known means may be used as the lifting means of the rotary tillage claw unit 14. For example, as shown in FIG. 4, a screw shaft 53 provided with an elevating handle 52 is screwed into a beam end portion 51 that protrudes rearward and is inclined downward from the main beam 11, and the tip of the screw shaft 53 is rotated. It can be set as the structure connected with the connection part 54 of the moving arm 12 so that rotation was possible. According to this, the rotation arm 12 can be moved up and down by the screw shaft 53 moving to the rear upper part or the front lower part by the rotation of the lifting handle 52. Along with this elevation, the height position of the rotary tillage claw unit 14 attached to the tip of the rotating arm 12 can be adjusted.

  When the rotary tillage claw unit 14 is lowered by the elevating handle 52, it can be deeply plowed, so that the layer of the fertilizer mixed soil 100 can be thickened. Moreover, the thickness of each layer of topsoil and the fertilizer mixing soil 100 can be adjusted by adjusting the height of the front rotary tillage claw unit 41 and the rotary tillage claw unit 14. Further, if both the front rotary tillage claw unit 41 and the rotary tillage claw unit 14 are lowered, the fertilizer mixed soil 100 at a deeper position can be obtained.

  In the guide plate 31 of the present embodiment, the front end portion 31a has a forward rotating tillage so that the topsoil cultivated by the forward rotating tillage claw unit 41 and the fertilizer mixed soil 100 fertilized and cultivated by the rotating tillage claw unit 14 are not mixed. The claw unit 41 is positioned at substantially the same height as the lower part of the region where the claw unit 41 rotates. In addition, the guide plate 31 of the present embodiment is provided with the cutting blade 31d and the upright guide portion 34 of the embodiment of FIG. 1 and the rotary feed claw unit 32 of the embodiment of FIG. Of course, it is possible to cover the fertilizer mixed soil 100.

Next, application examples of the rotary tiller according to the present invention will be described.
In addition to the fertilizer hopper 21 and the fertilizer supply pipe 22 described above, another hopper and a fertilizer supply pipe may be provided so that the fertilizer can be supplied in front of the guide plate 31. According to this, for example, among the two layers of cultivated soil, a slow-acting fertilizer is supplied to the deep layer and a fast-acting fertilizer is supplied to the shallow layer. it can.
Moreover, you may provide the adjustment mechanism of the fertilizer width which functions so that the fertilizer supply pipe | tube 22 can adjust a fertilization width | variety so that some fertilization holes 24 may be plugged up. According to this, the width | variety of the part opened among the some fertilization holes 24 can be adjusted according to the width of a crop, and a fertilizer can be fertilized efficiently.
Furthermore, according to the rotary tiller according to the present invention, it can also be used when supplying or charging a soil disinfectant or steam into the soil. According to this, for example, when it is desired to disinfect a deep layer of soil, it can be performed intensively as much as it is not supplied or put into the shallow layer, so that soil disinfection can be performed efficiently.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

1 Tractor 10 Tilling part 11 Main beam 12 Rotating arm (transmission case)
13 Rotating Shaft 14 Rotating Tillage Claw Unit 20 Fertilizer 21 Fertilizer Hopper 22 Fertilizer Supply Pipe 23 Fertilizer Guide Pipe 24 Fertilizer Hole 25 Screw 26 Pulley 30 Topsoil Guide 31 Guide Plate 31a Tip 31b Down Slope 31c Down Slope 31d Cutting Blade 32 Rotating feed claw unit 33 Rotating shaft 34 Upright guide portion 41 Front rotating tillage claw unit 42 Front transmission case 51 Beam end portion 52 Lifting handle 53 Screw shaft 54 Connecting portion

Claims (8)

A rotary tiller device comprising a rotary tillage claw unit provided with a plurality of tillage claws attached to a rotating shaft so as to be mounted on the rear part of the tractor and wake up the ground,
As the tractor travels, a guide plate that guides the top soil in front of the rotary tillage claw unit to be lifted and dropped to the rear of the rotary tillage claw unit through the top of the rotary tillage claw unit;
A rotary tiller comprising a fertilizer hopper for storing fertilizer above the guide plate, and a fertilizer supply pipe extending from the fertilizer hopper below the guide plate to the front of the rotary tillage claw unit. apparatus. It is arranged in front of the rotary tillage claw unit and the guide plate, and operates to cultivate the top soil shallower than by the rotary tillage claw unit and to send the cultivated soil to the rear through the upper side of the guide plate. It has a front rotary tillage claw unit,
2. The rotary tiller according to claim 1, wherein a front end portion of the guide plate extends forward of the rotary tillage claw unit so as to crawl the topsoil plowed by the front rotary tillage claw unit.   The tip of the guide plate is provided in a shape with a sharp center, and the tip extends to the front so as to bite into the top soil and scoop up the soil. A rotary tiller according to claim 1.   4. A rotary feed claw unit provided with a plurality of feed claws mounted on a rotary shaft so as to feed the soil placed on the guide plate to the rear of the rotary tillage claw unit. The rotary tiller according to any one of the above.   The rotary tiller according to any one of claims 1 to 4, wherein the fertilizer supply pipe located below the guide plate is a cylinder and a screw is provided inside the cylinder.   The rotary tillage claw unit is rotatably attached to the lower end portion of a rotating arm having an upper end portion pivotally attached and a lower end portion that can be moved up and down so that the height position can be adjusted. The rotary tiller according to any one of claims 1 to 5.   2. The guide plate has an upward slope portion that covers the upper side of the rotary tillage claw unit, scoops up the soil at the front portion, and a downward slope portion that causes the soil to fall rearward at the rear portion. The rotary tiller of any one of thru | or 6.   The rotary tiller according to any one of claims 1 to 7, wherein an upright guide portion is provided at an edge portion on both sides of the guide plate to prevent the soil that has been scooped up from falling off.

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