JPH0451122B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a tillage device, and more particularly, to a tillage device for tilling and inverting tilled soil using relatively large gravel.

(Prior Art) Conventionally, this type of tillage device includes, for example,
As described in Japanese Patent Application Laid-Open No. 60-217801, a plurality of desks are fixed to a drive shaft at intervals with curved surfaces formed on each facing the same direction, and the distance between the plurality of desks is A mold board is fixed to the rear part of the desk for turning the tilled soil debris plowed by the desk, and this mold board has an edge parallel to the traveling direction in plan view and an edge extending sequentially in the front and back direction. A triangular configuration is known with the edges connecting the .

In addition, as described in Japanese Patent Application Laid-open No. 180505/1983, vertical cutting blades are arranged side by side at intervals in the left and right direction, and between the vertical cutting blades, a horizontal cutting blade and a reversing guide are placed in the front and back direction. A configuration is known in which a push guide, an extrusion guide, and a press guide are sequentially arranged in the rear part of the reversing guide while being provided so as to be able to vibrate freely.

Furthermore, as described in Japanese Patent Application Laid-Open No. 57-105101, a reversing plow having a plow tip and a soil-repelling plate is provided, and a reversing plate or a reversing guide roller is provided on the opposite side of the soil-repelling plate of the reversing plow. Several configurations are known.

(Problems to be Solved by the Invention) In each of the configurations described in the above-mentioned publications, the plowed soil debris is inverted on the spot in the ditch of the plowed soil debris to prevent soil movement. This is what we are trying to prevent.

However, in the configuration described in JP-A No. 60-217801, since the mold hoard that turns the plowed soil debris upside down is fixed, the sliding resistance of the plowed soil against this mold hoard is large. This mold board only inverts the plowed soil, but it does not plow at the remaining part of the ditch where the plowed soil remains, that is, at the lower end of the rotation of the desk, so it forms a mountain shape in the ditch. Since the remaining uncultivated area is not plowed, the bottom of the ditch remains uneven, and when rice planting is done as a post-work, the rice transplanter may tilt due to the unevenness and the rice planting work may not be carried out accurately. The problem is that the moldboard has a special shape and a complicated structure in order to turn plowed soil upside down.

Furthermore, in the configuration described in JP-A No. 60-180505, the tilled soil is cut vertically by the left and right vertical cutting blades, and then the cultivated soil is cut horizontally by the horizontal cutting blades. It is rare for irregularities to occur at the bottom of a gravel ditch, but when this horizontal cutting blade is vibrated in the front and back direction,
Although the sliding resistance of the plowed soil debris is reduced compared to the mold board of the publication, the traction resistance is still large because the horizontal cutting blade lifts it as plowed soil debris. There are problems in that there are a large number of parts required for raising and reversing, and the structure is complicated.

Furthermore, in the configuration described in Japanese Patent Application Laid-Open No. 57-105101, since the reversing plow is only advanced by traction, there is a problem in that the traction resistance is large.

Therefore, the present invention has been made in view of the above points, and the plowed soil debris plowed by a plurality of driving desks is reliably placed in the gravel groove of the plowed soil trace by a plurality of return desks. It can be turned over on the spot, the traction resistance is small, and the bottom of each ditch can be formed almost horizontally after plowing and turning over the plowed soil, which prevents rice transplanters and management machines from tilting. It is an object of the present invention to provide a tillage device that can prevent the formation of uneven portions that cause the problem, has a small number of parts, and has a simple structure.

(Means for Solving the Problems) The tilling device of the present invention includes a machine frame that is connected to a tractor and is towed, and a machine frame that rotates while tilting backward from one end toward the other end. The horizontal rotating shafts are freely provided, and the centers of each are fixed to the rotating shafts, and the curved surfaces formed on each are arranged in parallel at intervals in the axial direction. A plurality of drive desks are oriented in the same direction according to the reversal side, and each drive desk is located at the rear of the plurality of drive desks and is rotatably provided on the machine frame, and the curved surface formed on each of the drive desks is It consists of a plurality of return desks arranged in parallel facing the direction opposite to the reversal direction of the plowed soil debris by the curved surface of the drive desk, and the plurality of return desks have their lower ends located in the front part of each. Displaced from the lower end of the drive desk to the reverse side of the plowed soil debris,
In addition, the lower end portions of each are arranged on the same plane.

(Function) In the tilling device of the present invention, the machine frame is connected to the tractor, and when the rotating shaft provided on the machine frame is rotated by the output from the tractor, for example, the rotating shaft is installed in parallel with the rotating shaft. A plurality of axial drive disks are rotationally driven.

Then, as the machine frame is towed by a tractor, the soil is tilled one after another by multiple drive desks.
A groove with a predetermined width is formed in each of the plowed soil traces, and each of the plowed soil is guided by the curved surface of the respective drive disk and directed toward the opposite side of the side part of the drive disk. It is derived while being sequentially inverted. In addition, each of the tilled soil debris led out to the side from each driving desk is brought into contact with the respective return desk at the rear part, and each of the tilled soil debris rotates each of the tilled soil debris. Then, each plowed soil is guided while being reversed toward the ditch side so that each plowed soil debris is pushed back by the curved surface of each return desk. The soil debris is guided into the respective plowed soil debris trench, and each plowed soil debris is therefore pushed back into the respective plowed soil trench in an inverted state. That is, each plowed soil debris is turned over on the spot without being moved laterally.

In this case, the plurality of return desks have their lower ends displaced toward the reverse side of the tilled soil from the lower ends of the drive desks located in front of each one, and their lower ends are arranged on the same plane. As a result of the rotation of each return desk, the remaining plowed area that has not been plowed at the lower end of each front driving desk is plowed, and therefore each plowed soil gravel is plowed. The bottom of each ditch left after plowing is formed in a substantially flat plowed state.

(Example) The configuration of an example of the present invention will be described based on the drawings.

In the figure, 1 is a cylindrical machine frame that is long in the left-right direction, and this machine frame 1 is tilted at an angle that is not perpendicular to the direction of travel, that is, one end is displaced forward and the other end is displaced backward. It is arranged horizontally in an inclined state. This machine frame 1 is provided with a transmission 3 that protrudes rotatably with the input shaft 2 facing forward in the middle part thereof, and the upper end of a chain case 4 is fixed to one end of this machine frame 1. At the same time, the upper part of a bracket (not shown) facing the chain case 4 is fixed to the other end of the machine frame 1. Further, between the chain case 4 and the lower end of the bracket, both ends of a rotating shaft 6, which is disposed horizontally and parallel to the machine frame 1, are rotatably mounted. The output from the transmission 3 is transmitted through an interlocking medium consisting of an output shaft of the transmission 3 rotatably provided in the chain case 1 and a chain rotatably provided in the chain case 4. It is designed to rotate in conjunction with each other. The rotating shaft 6 is provided horizontally with one end displaced forward and the other end rearward and inclined.

Further, in the axial direction of the rotary shaft 6, the center portions of a plurality of driving disks 37 are fixed to each other at intervals for continuously cultivating the cultivated soil in a plurality of rows. Each of the plurality of driving desks 37 is formed into a bowl shape with a curved surface 37a, and the curved surface 37 formed on each of the drive desks 37 is connected to the rotating shaft 6.
They are arranged in parallel with a facing in the same direction, with a corresponding to the reversed side of the plowed soil. Accordingly, the plurality of drive desks 37 can be driven by the inclination angle of the rotation shaft 6.
It is rotated while being inclined at a predetermined inclination angle with respect to the direction of travel, and plows the tilled soil with each preceding front side portion 37b, and also transfers this plowed soil debris from the curved surface 37a to the rear guide portion 37c. The guide is guided while being reversed toward the opposite side of the inclination direction.

Further, in the length direction of the machine frame 1, each drive desk 3 is located approximately in the middle of each of the drive desks 37.
The leading ends of a plurality of connecting frames 34, the number of which is equal to 7, are connected by connecting fittings 34 such that their positions can be freely adjusted in the axial direction. The upper side parts of the suspension rods 31 are inserted into the holding parts 35 formed in the parts so as to be able to adjust their positions in the vertical direction, respectively.
In addition, the set positions of each suspension rod 31 are fixed with bolts and nuts 33.

Further, a plurality of return desks 30 are rotatably mounted on the lower ends of each of the suspension rods 31 by support shafts 32, respectively, and are located at the rear of each of the drive desks 37. This multiple return desk 3
0 are each formed into a bowl shape with a curved surface 30a. And multiple return desks 30
connects each curved surface 30a to the driving desk 3.
They are arranged side by side with an inclination toward the return direction opposite to the direction in which the plowed soil debris is reversed by the curved surface 37a of No. 7.

That is, the plurality of return desks 30 each have a curved inversion push-back section 30b on the front side facing the guide section 37c of the drive desk 37, and a curved inversion push-back section 30b on the rear side following the inversion push-back section 30b. The guiding portions 30c are arranged in a tilted state facing the guiding portions 37c of the driving desk 37, and the curved surfaces 30a are arranged in parallel with each other facing in the same direction in accordance with the returning direction of the tilled soil debris. .

Further, the plurality of return desks 30 are arranged such that their respective lower ends 30d are slightly displaced from the respective lower ends 37d of the drive desks 37 in the reversal direction of the tilled soil debris, and the respective relative positions are displaced. The lower end portions 30d and 37d are disposed substantially on the same plane and are mounted on an axis.

Furthermore, a pair of lower arms 24 are integrally provided on the left and right sides of the machine frame 1 so as to project forward, and a pair of top arms 25 are provided on the left and right sides of the machine frame 1 inside the pair of lower arms 24.
are integrally protruded toward the upper front side, and the pair of top arms 25 and the pair of lower arms 24
are connected to each other by a stay 26. Further, a loft pin 27 is provided at the tip of the pair of lower arms 24.
are provided respectively, and connecting portions 28 are formed at the distal end portions of the pair of top arms 25 so as to face each other and communicate with each other.

Next, the operation of the above configuration will be explained.

Lower pins 27 at the tips of a pair of lower arms 24 are connected to the left and right lower links of the tractor, and connecting portions 28 at the tips of the top arms 25 are connected to the top links of the tractor by connecting pins. Further, the input shaft 2 of the transmission 3 is interlocked and connected to the power output shaft of the tractor via a power transmission shaft.

Next, when the machine is towed by the tractor and the output from the power output shaft of the tractor is transmitted to the transmission 3 via the power transmission shaft and the input shaft 2, the interlocking medium is applied to the transmission 3. A rotary shaft 6 is rotated, and a plurality of drive desks 3 are fixed to the rotary shaft 6.
7 are each driven to rotate. The plurality of driving desks 37 are rotated while their leading front side portions 37b sequentially bite into the tilled soil a to cut and till the tilled soil a, and each of the tilled soil b
are curved surfaces 37a curved in the respective reversal directions.
from the guide section 37c on the rear side through the guide section 3.
They are sequentially reversed and led out toward the respective return desks 30 facing 7c.

Further, each of the tilled soil debris b introduced into each of the return desks 30 is brought into contact with the respective reversing push-back portions 30b of each of the return desks 30, and each of the tilled soil debris b causes each of the return desks 30 to rotate. While being sequentially assisted in reversing by each reversing push-back section 30b, each of the tilled soil debris is pushed back toward the respective drive desk 37 side facing each return desk 30, and each reversing Each plowed soil b is further reversely guided toward the respective driving desk 37 side by the guiding portion 30c of the curved portion 30a continuously formed in the push-back portion 30b, and the respective plowed soil debris b is The plowed soil b plowed by the drive desk 37 is turned upside down and pushed back into the respective plow grooves c in sequence.

At this time, each return desk 30 with respect to each drive desk 37 has its lower end 30d slightly shifted from the lower end 37d of the drive desk 37 in the reversal direction of the plowed soil b, and each lower end 30d and 37d on substantially the same plane, each plowed soil b
The bottom portion f of the ditch c is plowed to be substantially flat, with almost no mountain-shaped remaining plowed portions not being plowed. That is, the lower end 37 of each drive desk 37
With respect to the position d, the lower end 30d of each return desk 30 is not shifted in the reversal direction of the tilled soil b, that is, the lower end 37d of each drive desk 37 and the lower end of each return desk 30 30d are disposed on the same axis in the front-rear direction, the lower end 30d of each return desk 30 is connected to the respective driving desk 3.
As shown in FIG.
A substantially mountain-shaped remaining plowed portion g is generated between the bottoms of the plowed soil grooves c of each plowed soil b after being turned over.

However, the position of the lower end 30d of each return desk 30 is slightly shifted from the gravel groove c after the lower end 37d of each driving desk 37 has passed in the reversal direction of the plowed soil b, and the lower end 30d, 3 of each
7d on substantially the same plane, the lower end 30d of each return desk 30 can plow the remaining plowed portion g generated between the ditches c after the lower end 37d of each driving desk 37 has passed. As a result, as shown in Fig. 3, the bottom part f of each plowed soil b, which is made up of each plowed groove c, is plowed approximately flat as a whole, resulting in a residual plowed part g. do not have.

In this way, each plowed soil b plowed by each drive desk 37 is inverted into the plowed soil groove c of another adjacent plowed soil plow d, as shown in FIG. Each plowed soil b
The cultivated soil (a) is inverted on the spot in the ditch (c), so that the cultivated soil (a) does not move to the side as a whole.

In addition, in carrying out the operation, the mounting position of each returning desk 30 is adjusted in advance in the left-right direction or up-down direction with respect to the guide portion 37c of each driving desk 37, depending on the working conditions in the field. To enable plowed soil b to be returned surely and smoothly into the ditch c.

(Effects of the Invention) According to the present invention, each plowed soil plowed by a plurality of drive desks is reliably placed in the trench of the plowed soil trace by a plurality of return desks. However, at this time, the plurality of drive desks and the plurality of return desks are configured to turn over the plowed soil debris on the spot while rotating, so that the tillage reversal effect and the return of the plowed soil debris can be easily achieved. The action is smooth and the traction resistance can be reduced.

In addition, the lower end of each of the plurality of return desks is displaced from the rotating lower end of each drive desk to the side where the tilled soil is reversed, and the lower ends of each are arranged on substantially the same plane, so that the drive desk The mountain-shaped protrusions that remain in the ditch after plowing and reversing the plowed soil can be reliably tilled by the lower end of the return desk, and therefore the bottom of each ditch can be formed substantially horizontally, and it is possible to prevent the formation of uneven parts in each of the ditches that would cause the rice transplanter, management machine, etc. to tilt.

Furthermore, since it consists of a combination of a drive desk and a return desk, the number of parts is small and the structure is simple.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of the tilling device, Fig. 2 is a plan view of a part of the same,
FIG. 3 and FIG. 4 are explanatory diagrams of the operation of the plowed soil and debris. 1... Machine frame, 30... Return desk, 30a...
Curved surface, 37... Drive desk, 37a... Curved surface, a... Tilled soil, b... Tilled soil, c... Gravel.

Claims (1)

[Scope of Claims] 1. A machine frame that is connected to a tractor and towed by the machine, and a horizontal rotating shaft provided on the machine frame so as to be rotatable in a backwardly inclined state from one end to the other end. The centers of each were fixed to this rotating shaft, and they were arranged side by side at intervals in the axial direction, and the curved surfaces formed on each were oriented in the same direction to match the reverse side of the plowed soil debris. a plurality of drive desks, each of which is located at the rear of the plurality of drive desks and is rotatably provided on the machine frame, and the curved surfaces formed on each of the drive desks are used to move the tilled soil debris by the curved surface of the drive desk; a plurality of return desks arranged in parallel facing the opposite direction to the reversal direction, the plurality of return desks each have a lower end portion that is plowed from a lower end portion of the driving desk located in front of each of the plurality of return desks. 1. A tillage device, which is displaced to the reverse side of the gravel, and whose lower end portions are arranged substantially on the same plane.