KR20130118504A - Cultivating blade for rotary and method for making the same - Google Patents

Cultivating blade for rotary and method for making the same Download PDF

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Publication number
KR20130118504A
KR20130118504A KR1020120041424A KR20120041424A KR20130118504A KR 20130118504 A KR20130118504 A KR 20130118504A KR 1020120041424 A KR1020120041424 A KR 1020120041424A KR 20120041424 A KR20120041424 A KR 20120041424A KR 20130118504 A KR20130118504 A KR 20130118504A
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South Korea
Prior art keywords
tillage
blade
rotary
tilling
bent
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KR1020120041424A
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Korean (ko)
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김종규
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주식회사 세웅
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Priority to KR1020120041424A priority Critical patent/KR20130118504A/en
Publication of KR20130118504A publication Critical patent/KR20130118504A/en

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/02—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel
    • A01B33/021—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel with rigid tools
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
    • A01B33/103—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented horizontally
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/14—Attaching the tools to the rotating shaft, e.g. resiliently or flexibly-attached tools
    • A01B33/142—Attaching the tools to the rotating shaft, e.g. resiliently or flexibly-attached tools the rotating shaft being oriented horizontally

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Working Implements (AREA)

Abstract

PURPOSE: A cultivation blade for a rotary and a manufacturing method thereof are provided to prevent the back of a cultivation unit from being interfered and to reduce a cutting angle. CONSTITUTION: A cultivation blade for a rotary includes a rotary shaft (20), a fixed plate (21), a bracket, a fixing unit (31), and a cultivation unit (32). The fixing unit is fixed to the bracket. The cultivation unit is extended from the fixing unit in a columnar direction and is curved. Blades are installed on one side of the cultivation unit and have an L-shape. A first bent plate and a second bent plate are installed in the cultivation unit.

Description

Cultivating blade for rotary and method for making the same}

The present invention relates to a rotary tillage blade and a method for manufacturing the same. More specifically, when the tillage blade cuts the soil while the tillage operation is carried out, the soil and the tillage blade are basically not interfered with the rear surface of the tillage part. To minimize the cutting angle to minimize tillage load, the overall shape is provided in an arc shape from the fixed part to the tillage part when viewed from the center line direction of the tillage axis, and the tillage part is predetermined with respect to the reference line which is perpendicular to the center line of the tillage axis. The first bent plate is bent to be inclined at an angle and the second bent plate is bent toward the center direction of the tilling rotary axis so that the rear end portion of the first bent plate portion has a swing diameter smaller than the swing diameter of the tilling blade It relates to a tillage blade and a method of manufacturing the same.

In general, a rotorvator (rotorvator) is a work machine used to connect to a tractor, abbreviated as a rotary, the rotary receives the power from the tractor's PTO shaft while plowing the paddy field or plowing the soil while rotating the tilling blades It can be crushed, leveled or stopped.

Conventional rotary has a rotary tillage shaft having a plurality of tillage blades rotatably provided at the bottom of the rotary frame, and a rotary drive shaft for power transmission to the tillage rotary shaft at the top of the rotary frame is parallel to the tillage rotary shaft across the gearbox. One end of the rotary drive shaft and the tilling rotary shaft is installed so that the driving of the rotary drive shaft is transmitted to the tillage rotary shaft through two or more gears engaged with each other.

The rotary drive shaft is engaged with the input drive shaft in the gearbox, and the rear end of the rotary frame is a curved rear cover to prevent the soil discharged by the tillage blades of the tilling rotary shaft to be scattered rearward and smoothly during the rotary operation Is provided.

The tilling axis is provided with a cylindrical pipe, and the fixing plates, which are disc-shaped flanges, are arranged at regular intervals on the pipe, and fastening holes for fastening a plurality of tilling blades at equal angles to the outer periphery of the fixing plate. The tilling blade is provided in a needle-shaped shape, and is composed of a fixing part which drills the fastening hole corresponding to the fastening hole of the fixing plate at one end, and a tilling part which is bent against the fixing part to substantially dig up the soil.

Therefore, the tilling shaft coincides with the fastening holes of the fixed plate and the tilling blade, and the fastening blades are attached to the fixed plate at equal angles by fastening the fastening member through the fastening holes.

The conventional rotary as described above is connected to the front end of the rotary frame by using the upper and lower links of the tractor or the connector attached thereto, and the rotary connection is installed, but the input drive shaft of the gearbox is connected to the power take-off shaft of the tractor and the universal joint. You can do it on

As the power take-off shaft of the tractor rotates, the rotary drive shaft of the gearbox rotates as the input drive shaft of the gearbox rotates, and the tiller of the tillage rotary shaft connected to the rotary drive shaft is operated so that the tiller of the tillage shaft rotates. The blades carry out tillage (rotary work) by turning the ground surface of the answer to a predetermined depth.

In this state, when the rotary is advanced, the soil discharged by the tillage blades of the tillage rotary shaft falls to the ground without being scattered backward by the rear cover and stops evenly.

The tilling blades of the tillage rotary shaft applied to the existing rotary tills the tilling depth (typically 100-150 mm), which overturns the ground surface of the entire field to a predetermined depth by the existing rotary. When the soil is turned over, the rotary itself moves forward with the tractor and the tilling blade of the tilling axis rotates to turn over the soil surface of the field.

Therefore, the rotary speed of the rotary tillage of the rotary according to the speed of the rotary should be suitable and the tillage load should be reduced in consideration of the shape and the inclination angle of the tillage of the tillage blade.

KR1020110084646 A

However, in the conventional rotary tillage blades as described above, the tillage portion of the tillage blade is simply bent at an appropriate angle so that the soil can be dug up well and broken down, so that the rotational speed of the rotary tillage shaft of the rotary according to the traveling speed of the tractor is not considered at all. In addition, there is a problem that the tillage load to the traction load of the rotary is increased because it is not provided in an angle and shape with respect to the tillage portion of the tillage blade for digging soil, in particular, for the tillage blade of the tillage rotary shaft.

Specifically, if the tilling angle of the tilling blade that digs soil with tilling blades is too large, even if the tilling blade is moved forward along with the rotation of the tilling shaft, the cutting surface is not touched by the rear upper part of the tilling section and the tilling section. Although not affected by the forward resistance, the front end of the tillage blade part, as well as the entire surface is rotated and scraped at the same time scraping the soil has a problem that the tillage load on the tillage is increased.

On the contrary, if the angle of the tiller becomes small, the tip of the tiller is close to the entire load for cutting the soil, but there is no restriction, but the tiller blade is also moved forward with the rotation of the tiller shaft, so the rear part of the tiller is cut by the tiller. The phenomenon of pushing the soil cross section is generated, which leads to an increase in the traction load, which is eventually interpreted as tilling load of the rotary.

The present invention has been researched and developed in order to solve the conventional problems as described above, when viewed from the center line direction of the tillage rotary shaft, the overall shape is provided in an arc shape from the fixed portion to the tillage portion, and the tillage portion is the centerline of the tillage rotary shaft. A first bent plate portion bent at a predetermined angle with respect to the reference line in a right angle, and a second bend inwardly circumferentially circumferentially arranged so that the rear end portion of the first bent plate portion has a swing diameter smaller than the swing diameter of the tilling blade; By providing the plate part, when the tiller cuts the soil during the tillage operation while moving forward with the rotary, the cutting angle formed by the soil and the tiller part is basically minimized while the backside of the tiller part is not interrupted, thereby minimizing tillage load and traction load. Tillage blades for rotary Its purpose is to provide a method of action.

In addition, in the present invention, the entire shape from the fixed part to the tiller part is provided in an arc shape, and the tip of the first bent plate part of the tiller part is also inclined as it moves away from the bent part. Another purpose is to provide a rotary tillage blade and a method for manufacturing the same, which are to be cut by sequential point contact, thereby minimizing the cutting load when cutting the soil with the tiller.

The present invention for achieving the above object is fixed to the fixed plate and the other end of the fixed plate of the tilling axis or the outer peripheral surface of the bracket is extended to the other end is fixed to the bracket and in the circumferential direction Rotary tillage is provided with a tilling portion that is bent and extended in the fixed portion is provided with a blade on one side in the longitudinal direction of the tillage portion and bent in the direction of the center line of the tillage rotation axis at the extended end of the tillage portion, the overall shape is provided in a needle-shaped shape. In the blade, when viewed from the centerline direction of the tillage axis, the entire shape is provided in an arc shape from the fixed part to the tillage part, and the tillage part is inclined by a predetermined angle of inclination with respect to the reference line which is perpendicular to the centerline of the tillage axis. While bending, write the center vertical line of the tilling axis. Also, the first bent plate portion bent inclined by a predetermined torsion angle β is provided, and the second rear end portion of the first bent plate portion is bent inwardly in the circumferential direction so as to have a swing diameter smaller than the swing diameter of the tilling blade. A bent plate portion is provided.

In the tillage blade for a rotary tiller according to an embodiment of the present invention, the first bent plate portion is cut at an optimum cutting angle when the front end of the first bent plate portion of the tillage portion cuts the soil and at the same time not a point contact cut but a line contact cut. The cutting angle α of the tilling part is 70 to 80 degrees and the torsion angle β is 44 to 50 degrees so as to minimize cutting load.

In addition, in the tillage blade for a rotary according to an embodiment of the present invention, the second bent plate portion is the center angle (δ) so that the tilling axis of rotation according to the rotary speed is rotated and the traction load of the tilling portion is not generated due to the advance. It is characterized in that the 18 ~ 21 degrees prepared based on the 1 bent plate.

In addition, in the tillage blade for a rotary tiller according to an embodiment of the present invention, the first and second bent plate portion of the tilling portion is the first and the second in the circumferential circumferential direction with respect to the swing diameter of the tilling blade about the tillage rotation axis. It displays the width of the two bent plate portion, characterized in that the width of the first and second bent plate portion is provided 16 to 18 degrees.

And, a method for manufacturing a tillage blade for a rotary according to an embodiment of the present invention comprises the steps of preparing a tillage blade body by cutting an elongated plate having a predetermined width and thickness to a predetermined length; Forming a blade on one side surface in the longitudinal direction of the tilling blade body; Pressing the central portion of the other side opposite to one side of the tilling blade body on which the blade is formed to form a convex arc of the blade of the tilling blade body; Cutting both ends of the tillage blade body formed in the arc shape in the shape of the tillage blade before molding and drilling a connection hole connected to the tillage rotation shaft; Thereafter, the other side, which is not provided with a connection hole, is characterized in that it comprises a step of bending to form the first bent plate portion and the second bent plate portion.

As described above, the rotary tillage blade and the method for manufacturing the same according to the present invention are provided in the shape of an arc from the fixed part to the tillage part when viewed from the centerline direction of the tillage rotary shaft, and the tiller is perpendicular to the centerline direction of the tillage rotary shaft. The first bent plate portion bent inclined at a predetermined angle with respect to the phosphorus reference line is provided, and the second bent plate portion bent inward in the circumferential direction thereof so that the rear end portion of the first bent plate portion has a swing diameter smaller than the swing diameter of the tilling blade. When the tiller cuts the soil during the tillage operation while moving forward with the rotary, the cutting angle formed by the soil and the tiller is basically minimized while the backside of the tiller is not interfered, thereby minimizing tillage load and traction load. Get the effect.

In addition, the present invention provides the entire shape from the fixed part to the tillage part in an arc shape, and the first bent plate part of the tillage part is also provided in an inclined state away from the bent part, so that the soil is not linearly contacted, such as scissors. In-point (point) contact is cut and thereby the effect of minimizing the cutting load when cutting the soil with tillage part.

1 is a view schematically showing a rotary to which a tillage blade for a rotary according to the present invention is applied.
Figure 2 is a perspective view showing a part of the tillage rotary shaft fixed to the rotary tillage blade of the present invention in FIG.
Figure 3 is a view of the state viewed in the direction of the center line of the tilling axis in FIG.
Fig. 4 is a plan view of Fig. 3. Fig.
5A and 5B are perspective views showing a preferred embodiment of the tilling blade for a rotary part of the present invention.
Figure 6a is a perspective view showing in detail an enlarged one tillage blade mounted to the fixed plate of the tillage rotary shaft.
FIG. 6B is a view of the state viewed from the direction A of FIG. 6A.
7 is a view illustrating a manufacturing process of the tilling blade for a rotary according to the present invention.

Hereinafter, on the basis of the accompanying drawings will be described in detail for the rotary tillage blade and the manufacturing method of the present invention.

1 is a view schematically showing a rotary to which a tillage blade for a rotary according to the present invention is applied. The rotary 10 is provided with a tillage rotating shaft 20 having a plurality of tillage blades 30 at the lower portion of the rotary frame 11 so as to be rotatable, and the top of the rotary frame 11 is powered by the tillage rotating shaft 20. A rotary drive shaft (not shown) for transmission is installed in parallel with the tillage rotary shaft 20 across the gearbox 12, and the driving of the rotary drive shaft is at one end of the rotary drive shaft and the tillage rotary shaft 20. It is connected to be transmitted to the tilling rotary shaft 20 through two or more gears to be engaged.

The rotary drive shaft is engaged with the input drive shaft 13 in the gear box 12, the soil discharged by the tillage blade 30 of the tillage rotary shaft 20 at the rear end of the rotary frame 11 during the rotary operation A curved rear cover 14 is provided to prevent the rearward scattering and to smooth out.

2 to 4 is a view showing a tilling rotary shaft fixed to the rotary tillage blades according to the present invention. Several tillage blades 30 are provided at an equiangular angle for each of the plurality of fixed plates 21 provided at predetermined intervals on the outer circumferential surface of the tillage rotary shaft 20. The tilling rotary shaft 20 is provided with a cylindrical pipe, but the fixing plates 21, which are disc-shaped flanges, are arranged at regular intervals in the longitudinal direction of the pipe, and a plurality of tilling blades are formed at the outer periphery of the fixing plate 21. In order to fasten 20 at equal angles, two pairs of fastening holes 22 are drilled.

5A and 5B, the tilling blade 30 is provided with a strip-shaped plate material having a predetermined width and fixed to the circumference of the fixing plate 21, and the fixing part 31. The blade 33 is formed on one side of the longitudinal direction extending in the other end direction of the) and provided with a tilling portion 32 bent to form a needle-shaped overall shape.

In other words, the tillage part 32 is provided to be bent in the center line direction of the tillage rotation shaft 20 with an intermediate portion extending in the circumferential direction of the tillage rotation shaft 20 which is the other end from the fixed portion 31.

6a and 6b is a view showing a tilling blade for a rotary of a preferred embodiment according to the present invention. The tillage blade 30 is provided in the shape of an arc from the fixed portion 31 to the tillage portion 32 when viewed in the direction of the centerline of the tillage rotation shaft 20. As indicated by the two-dot chain line, which is the virtual line of FIG. 6A, before the tillage part 32 is bent, that is, in the state where the tillage blade 30 is unfolded, it is provided in an arc shape from the fixed part 31 to the tillage part 32. do.

The reason why the fixed part 31 and the tilling part 32 are provided in an arc shape as a whole is to sequentially cut the soil while the point contact is made instead of the line contact when rotated together with the tillage rotation shaft 20. Therefore, the blade 33 provided from the fixed part 31 to the tilling part 32 is formed in the large arc circumferential surface which is an outer arc part.

The fixing part 31 is for mounting to the fixed plate 31 of the tilling rotary shaft 20, the two connecting holes to be matched with the two fastening holes (22) forming a pair of two on the main surface of the fixed plate 21 ( 34) is perforated.

The tiller 32 is a first bent plate portion 321 bent in the direction of the centerline of the tillage rotary shaft 20 with respect to the reference line perpendicular to the centerline of the tillage rotary shaft 20, the first bent plate portion 321 is tilling A predetermined twist angle is also bent relative to the center vertical line of the tillage rotation shaft 20 while being bent inclined by a predetermined angle α in the direction of the center line of the tillage rotation shaft 20 with respect to the reference line which is perpendicular to the center line of the rotation shaft 20 ( It is bent inclined by β).

In addition, the end of the tilling part 32 is preferably provided in parallel with the torsion angle β so that the cutting plane is vertically cut when it is fixed and rotated to the fixed plate 21 of the tillage rotation shaft 20.

The angle of bend α of the tillage part 32 is 70 to 80 degrees (preferably around 75 degrees) and the torsion angle β is 44 to 50 degrees (preferably around 47 degrees). The reason for limiting the bending angle α and the torsion angle β of the tilling part 32 is that the tip of the first bent plate part 321 of the tilling part 32 cuts at an optimal cutting angle when cutting the soil. At the same time, it is intended to minimize the cutting load by making point contact cutting instead of line contact cutting.

A second bent plate portion 322 is bent at the rear end portion of the first bent plate portion 321 to have a swing diameter smaller than the swing diameter of the tillage blade 30, and the second bent plate portion 322 is a tilling rotary shaft. When mounted on the fixed plate 31 of (20), the first bent plate portion 321, which is the tilling blade swing diameter position, is bent at an angle toward the center of the tilling rotation shaft 20 at a predetermined center angle δ. The second bent plate portion 322 is bent to the end surface of the first bent plate portion 321 of the tilling portion 32 of the bending reference angle (ε) of 75 to 90 degrees to the bending reference line.

The center angle δ of the second bent plate portion 322 is 18 to 21 degrees based on the first bent plate portion 321, preferably about 18 degrees. At this time, when the width of the tillage blade 30 is approximately 70 mm, the end of the second bent plate portion 322 has a smaller swing diameter having a distance of about 12 mm than the swing diameter of the tillage blade 30. The reason why the center angle δ of the second bent plate portion 322 is provided is to prevent the traction load of the tilling portion due to the forward movement and the tillage rotation shaft 20 according to the rotary speed.

A method of manufacturing a tillage blade for a rotary which is an embodiment of the present invention having such a configuration will be described with reference to FIG. 7.

First, a long strip-shaped plate having a predetermined width and thickness is cut to a predetermined length to prepare the tillage blade body 300, and one side surface in the width direction of the tillage blade body 300 thus prepared, that is, the tillage blade body 300. The blade 33 is formed in the longitudinal direction of the blade. At this time, the blade 33 is provided by performing a rolling to move while pressing the roller in an inclined state on one side edge portion of the tilling blade body (300).

The tilling blade body 300 having the blade 33 formed thereon is placed on the lower mold, but the blade 33 is raised in the width direction of the tilling blade body 300 by pressing the convex upper mold so that the blade 33 is located at the lower side. Bending and forming into an arc shape.

As described above, both ends of the tilling blade body 300 which is bent into an arc shape are cut by notching to prepare the tillage blade 30 in an unfolded shape, and at the same time, a tilling rotary shaft is formed on the fixing part 31 at one end. The fixing plate 21 and the connection hole 34 for fixing 20 are drilled by piercing.

The tilling blade body 300, which is notched and pierced as described above, is molded into a molding mold, and the first bending plate portion 321 and the second bending plate portion 322 are bent to the fixed portion 31 at one end of the tilling portion. The finished tillage blade 30 in which the 32 was formed is obtained.

The tilling blade 30 thus formed may be made of carbon steel or spring steel, and if the material is spring steel, it is preferable to manufacture it by hot working, and after molding to a product shape, it is gradually heated in the atmosphere after heating to 460 ~ 510 ° C. It should be cooled and tempered to a Rockwell hardness (HRC) of 40 to 43.

Rotary applied to the rotary tillage blade of the present invention configured as described above is to be used to connect to the rear of the tractor as in the conventional bar that specific description is omitted.

The rotary 10 receives power from the tractor and rotates the input drive shaft 13 of the gear box 12 provided at the tip of the rotary 10 so that the rotary drive shaft is interlocked, and the rotary frame 11 is connected to the rotary drive shaft. Since the tractor is operated in the state where the tillage rotary shaft 20 of the lower part is interlocked, the tillage blades 30 of the tillage rotary shaft 20 carry out tillage work (rotary work) by changing the ground surface of the previous answer to a predetermined depth.

In this state, when the rotary is advanced, the soil discharged by the tillage blade 30 of the tillage rotation shaft 20 does not fly backward due to the rear cover 14 and falls flat on the ground.

When the tillage blade 30 of the tillage rotary shaft 20 is tilled, the tiller is ground to a tilling depth (typically 100 to 150 mm) that grounds the ground surface of the previous answer to a predetermined depth as in the conventional rotary. When the soil of the previous answer is sown, the rotary itself moves forward with the tractor, and the tillage blade 30 of the tillage rotary shaft 20 is rotated, thereby overturning the soil surface of the previous answer.

On the other hand, tillage blade according to the present invention is to be used in a state fixed to the fixed plate 21 of the tillage rotary shaft 20, the angle of the tiller 32 is the first bent plate portion 321 at the center of the tillage rotary shaft 20 The end of the connection of the blade 33 and the reference to this as the basis of the angle between the connection and the center of the tilling rotary shaft 20, it will be determined by the width of the tillage blade 30.

Usually, when the width of the tillage blade 30 is 70 mm and the swing diameter of the tillage blade 30 is 500 mm in the rotary applied to the present invention, the angle of the tillage part 32 is about 16.3 degrees. This may vary the width of the tillage 32 so that the width of the tillage 32 may vary.

In addition, the angle of the second bending plate portion 322 can reduce the soil cutting load during tillage work as the first bending plate portion 321 is laid down, but tillage blades also move forward with the rotary tilling blade 30 It is required to bend toward the centerline direction of the tilling rotary shaft 20 in the main surface, which is the swing diameter of the).

In other words, even when the tilling part 32 of the tillage rotary shaft 20 is rotated along with the rotary 10 while cutting the soil, the rear surfaces of the first and second bent plate parts 321 and 322 which are tillage parts 32 are rotated. This is to ensure that only moderate tillage loads are applied without towing loads when they are not reached.

The reason why the tillage blade 30 is provided as described above will be explained by taking a typical example.

In general, when the tillage operation is performed, the rotary 10 is connected to the tractor and used, so that the driving speed is the same as that of the tractor and the traveling speed is 0.8 m / s, and the swing diameter (outer diameter) of the tillage blade 50 is 500. Mm. At this time, the rotation speed of the tillage blade 30 of the rotary 10 is based on the rotational speed (RPM) transmitted from the tractor to the input drive shaft 13 of the rotary 10 is 540, the gear box of the rotary 10 ( The rotation speed of the tillage rotary shaft 20 transmitted to the tillage rotary shaft by deceleration through 12) is approximately 170 RPM. Therefore, since the rotation speed of the tillage blade 30 becomes 170 revolutions / minute = 2.83 revolutions / second, the progress speed becomes 0.75 m (750 mm) when the tillage blades 30 rotate 2.83 revolutions.

In summary, when the 750 mm / 2.83 rotation is carried out, the tillage blade is rotated 265 mm when one rotation is performed. This is because the tillage blades 30 of the tillage rotation shaft 20 are fastened to the left and right sides of each of the fixed plates 21. Three tillage blades 30 were used when advancing 265 mm. In conclusion, the 265 mm bar is cut into three tillage blades 30. The size of the soil cut by one tillage blade 30 is about 88 mm.

This depends on how much the rotary traveling speed and the rotational speed of the tilling rotary shaft 20 are to be adjusted.

As such, when the tillage blade 30 cuts the soil and moves forward, the advance distance is 265 mm when the tillage blade 30 rotates once, so if it is divided into circumferential angles, it is 265 mm / 360 degrees = 0.736 mm / 1 degree. The advance distance when the tillage rotary shaft 20 is rotated by 1 degree can be obtained.

As an embodiment of the present invention, the width of the tillage part 32 of the tillage blade 50 is designed to be 70 mm, and thus the advance distance corresponding to the angle of the tillage blade 30 is the tillage rotation shaft 20. This can be obtained by multiplying the advance angle at the time of 1 degree rotation by the width angle of the tilling part 32.

In summary, the forward distance corresponding to the angle of the tillage blade 30 is 0.736 mm X 16.3 degrees, which is 12 mm, and thus, at the rear position of the blade 33 which is the tip of the first bending plate part 321. What is necessary is just to bend the 2nd bending board part 322 with the center angle (delta) of 18 degree | times with the deviation of 12 mm toward the center of the tillage rotation shaft 20 with respect to the 1st bending board part 321.

In conclusion, the blade 33, which is the tip of the first bent plate portion 321 of the tillage blade 30, and the end of the rear end of the first and second bent plate portions 321 and 322, are 12 mm larger than the swing diameter of the tiller 32. When the tilling operation of the rotary is performed only when the deviation of the degree is provided, the rear surface, which is the outer surface of the tilling part 32, does not touch the cut soil surface cut by the tilling part 32, and thus the towing of the tilling part 32 It is possible to carry out tillage work with only pure tillage load without worrying about load.

That is, the rear end of the first and second bent plate portion 321 and 322 constituting the tilling portion 32 as described above is provided with a smaller swing diameter to give a deviation, even if the tillage portion 32 is moved forward while rotating. Of course, the cutting angle is minimized and the tilling load is also minimized.

As described above, the present invention has been described with reference to the above preferred embodiments, but the present invention belongs to the patent claims and detailed description of the present invention as well as a modified example of simply applying a combination of these embodiments and the prior art known in the art. It will be appreciated that all of the techniques readily available to those skilled in the art will be included in the technical scope of the present invention.

The present invention is a tilling blade which is rotated together with the tillage rotary shaft in the rotary which is one of the working machines to be mounted on the tractor can be usefully used in the rotary field that can perform tillage work while minimizing tillage load.

10: Rotary 11: Rotary Frame
12: gearbox 13: input drive shaft
14: rear cover 20: tilling axis
21: fixing plate 22: fastening hole
30: tillage blade 31: fixed part
32: tiller 33: blade
34: connector 300: tillage blade body
321: first bending plate portion 322: second bending plate portion
α: angle of angle β: angle of twist
δ: center angle

Claims (5)

One end is fixed to the fixed plate of the tillage rotary shaft or the bracket of the outer peripheral surface thereof, each end of which is fixed to the bracket, and the fixed part fixed to the bracket, and the cultivated part circumferentially bent from the fixing part. In the rotary tillage blade provided with a blade on one side in the longitudinal direction of the tillage portion in the government and bent in the direction of the center line of the tillage rotation shaft at the extended end of the tillage portion, the overall shape is provided in a needle-shaped shape,
When viewed from the center line direction of the tillage axis, the entire shape is provided in an arc shape from the fixed part to the tillage part, and the tillage part is bent at a predetermined angle of inclination with respect to the reference line which is perpendicular to the center line of the tillage axis. A circumferential circumferential direction is provided so that a first bent plate portion bent inclined by a predetermined torsion angle β is also provided with respect to the center vertical line of the rotating shaft, and the rear end portion of the first bent plate portion has a swing diameter smaller than the swing diameter of the tilling blade. The tilling blade for a rotary, characterized in that the second bent plate portion bent inward. The method of claim 1,
The first bent plate is a cutting angle of the tilling part so that the tip of the first bent plate portion of the tillage to cut the soil at the optimal cutting angle and point contact cutting instead of line contact cutting to minimize the cutting load (α) is 70 to 80 degrees and the torsion angle (β) is a rotary tillage blade, characterized in that it is provided to 44 to 50 degrees. The method of claim 1,
The second bending plate portion for the rotary, characterized in that the center angle δ is provided at 18 to 21 degrees relative to the first bent plate portion so that the tilling axis is rotated according to the rotary speed and the traction load of the tillage portion is not generated due to the forward movement. Tillage blade. The method of claim 1,
The first and second bent plate portions of the tillage portion display the width of the first and second bent plate portions at an angle in the circumferential direction with respect to the swing diameter of the tillage blade about the tillage rotation axis, and the first and second bent plate portions Rotary tillage blades, characterized in that the width of the 16 ~ 18 degrees. Preparing a tilling blade body by cutting an elongated plate having a predetermined width and thickness into a predetermined length;
Forming a blade on one side surface in the longitudinal direction of the tilling blade body;
Pressing the central portion of the other side opposite to one side of the tilling blade body on which the blade is formed to form a convex arc of the blade of the tilling blade body;
Cutting both ends of the tillage blade body formed in the arc shape in the shape of the tillage blade before molding and drilling a connection hole connected to the tillage rotation shaft;
Thereafter, the other side of the connection hole is not provided, the other side of the first bent plate portion and the second bent plate portion is formed so as to form a step of forming a tillage blade for a rotary, characterized in that it comprises a.
KR1020120041424A 2012-04-20 2012-04-20 Cultivating blade for rotary and method for making the same KR20130118504A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104303717A (en) * 2014-08-29 2015-01-28 华中农业大学 Combined straw mulching rotary tillage knife roller
KR20160061651A (en) * 2014-11-24 2016-06-01 주식회사 국제단조 Manufacturing Device of Rotary Blade, Manufacturing Method of Rotary Blade and Rotary Blade
US9839172B2 (en) 2014-12-30 2017-12-12 Agco Corporation Rotary spider tine for tillage implement
IT201800006953A1 (en) * 2018-07-05 2020-01-05 AGRICULTURAL MACHINE FOR THE CLEANING OF LANDS USED FOR ORCHARDS AND VINEYARDS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104303717A (en) * 2014-08-29 2015-01-28 华中农业大学 Combined straw mulching rotary tillage knife roller
CN104303717B (en) * 2014-08-29 2016-04-27 华中农业大学 Combined straw is field rotary tillage rotor also
KR20160061651A (en) * 2014-11-24 2016-06-01 주식회사 국제단조 Manufacturing Device of Rotary Blade, Manufacturing Method of Rotary Blade and Rotary Blade
US9839172B2 (en) 2014-12-30 2017-12-12 Agco Corporation Rotary spider tine for tillage implement
IT201800006953A1 (en) * 2018-07-05 2020-01-05 AGRICULTURAL MACHINE FOR THE CLEANING OF LANDS USED FOR ORCHARDS AND VINEYARDS
EP3590317A1 (en) * 2018-07-05 2020-01-08 Torrico S.r.l. Agricultural machine for cleaning soils used to grow orchards and vineyards

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