KR102094955B1 - Soil shielding device of soil covering machine and soil covering machine comprising the same soil shielding device - Google Patents

Abstract

The present invention relates to a mudguard device mounted on a demodulator that crushes and blows soil by rotation of a rotating blade. The mudguard device according to an embodiment of the present invention includes a sliding angle tube connected to a main frame angle tube extending from the main frame of the cover machine in a slidable state; A hydraulic cylinder operatively coupled to the sliding angle tube so that the sliding angle tube is guided by the main frame angle tube and can be slid to the main frame side or vice versa; And a retaining plate coupled to an end portion of the sliding square tube. The earthing plate blocks the soil crushed and blown by the rotating blade in a state in which the sliding angle pipe is slid toward the main frame due to the contraction of the hydraulic cylinder.

Description

A soil covering device of a cover machine and a cover machine equipped with such a soil blocking device {SOIL SHIELDING DEVICE OF SOIL COVERING MACHINE AND SOIL COVERING MACHINE COMPRISING THE SAME SOIL SHIELDING DEVICE}

The present invention relates to a clogging device of a cover machine and a cover machine equipped with such a clogging device.

As an agricultural machine, a tractor is a general-purpose machine. The rear of the tractor can be equipped with tools for various agricultural tasks. For example, a harrow may be mounted at the rear of the tractor. Harrow is a tool used for paddy farming filled with water, and it is a tool to level the topsoil before planting. Among the agricultural machinery installed at the rear of the tractor is a tractor and cover. An earthenware machine is an agricultural machine that can form a dug of a certain shape and height. Covering machines are agricultural machines that cover soil after sowing. There is a type having a rotary blade as a kind of cover. A plurality of rotating blades mounted along the circumference of the circular plate can be blown by crushing the soil of the field while rotating by receiving power from the tractor. Finely crushed and blown soil covers the sown seeds. Among commercially available cover machines, there is also a type having a cutting blade in addition to the rotating blade described above. The soiling blade of such a cover machine performs a function of preventing the soil from being dug by the rotating blade from entering the bone at the same time as digging the bone, so that it is possible to distribute during the covering operation. Therefore, an agricultural machine equipped with a cutting blade together with a rotating blade is sometimes called a cutting machine.

The present invention relates to a mudguard device that can be mounted on a farming machine that crushes and blows soil by having a rotating blade, such as a loam or a cover machine, as described above. Background of the present inventors to develop such a retaining device is as follows.

1 is a photograph of a state in which the soil is crushed and blown off by the rotation of a rotating blade in a loam mounted on the rear of a conventional tractor. The loam machine in the picture in FIG. 1 digs two bones and blows the soil of the bone in all directions and does not block the blown soil at all. Therefore, the blown soil will accumulate on both sides of the valley. However, dirt that is blown out of the bone often causes problems. A problem occurred when the farm road was located directly outside the goal. The old farm road was mainly a dirt road, so even if the soil was blown up and accumulated, it was not a problem. However, most of the farm roads these days are cement roads. When a soil made of cement exists on the outside of the bone performing the work, and the soil dug away from the bone is accumulated on the cement farm, there is a cumbersome case in which the soil must be removed after the work is completed. Another problem occurred when there were farms owned by others outside the goal. If the farmland owned by others exists outside the goal of performing the work, the soil dug away from the goal may accumulate on the farmland owned by others. It may harm crops already planted in other people's farmland, and even if the crop is not planted, accumulated soil may interfere with the work on other people's farmland. There was also a problem that the soil being blown out of the bone blocked the drain. If the soil that was blown outward of the goal was accumulated in a drainage channel and blocked the drainage channel, the soil had to be removed after crushing and blowing the soil. Therefore, when performing a farming operation that crushes and blows the soil with a rotating blade, there is a need to prevent the soil from flying outward. The present inventors came to the present invention after immersing themselves in the development of a device capable of selectively performing clogging when it is necessary to prevent the outside from falling out of the soil as described above. Prior patent literature of the present invention discloses a agricultural machine that digs and digs the soil with a rotating blade, and Korean Patent Application No. 10-2009-0045299 (invention name: rotary discharger) invented by the present inventor can be mentioned, but this patent document No other literature, including, discloses agricultural machinery capable of preventing soil from being dug.

An object of the present invention is to provide a soil clogging device for a demodulator that can selectively carry out soil clogging when it is necessary to prevent the soil from being blown outward during a farming operation by digging and blowing soil with a rotating blade.

Another object of the present invention is to provide a cover machine equipped with such a retaining device.

The present invention relates to a clogging device mounted on a demodulator that crushes and blows soil by rotation of a rotating blade, or a cover machine comprising such a clogging device. The mudguard device according to an embodiment of the present invention includes a sliding angle tube connected in a slidable state to a main frame angle tube extending from the main frame of the cover machine; A hydraulic cylinder operatively coupled to the sliding angle tube so that the sliding angle tube is guided by the main frame angle tube and can be slid to the main frame side or vice versa; And a retaining plate coupled to an end portion of the sliding square tube. The earthing plate blocks the soil crushed and blown by the rotating blade in a state in which the sliding angle pipe is slid toward the main frame due to the contraction of the hydraulic cylinder.

The main frame angle pipes extend in both sides of the main frame, the sliding angle pipes are accommodated in each of the main frame angle pipes, and the hydraulic cylinders are configured to separate individual sliding angle pipes received in each of the main frame angle pipes from the main frame side or You can selectively slide to the opposite side. Here, the term optional means that either one of the two sliding tubes can be selected for sliding.

The cover machine may include a side frame fixedly installed on each of the mainframes of both mainframes. At this time, the clogging device according to an embodiment of the present invention includes a fixing groove forming part that fixes the side frame when the hydraulic cylinder is contracted. You can.

A mudguard device according to an embodiment of the present invention may include a mudguard angle tube fixed to an end of the sliding tube. The retaining plate may be coupled to a retaining plate frame coupled to each tube of the retaining device, and the fixing groove forming portion may be fixed to the retaining plate frame.

A soil discharge hole is formed in each tube of the mudguard device, and when the main frame side of the sliding tube is slid by contraction of the hydraulic cylinder, soil inside the tube of the mudguard device can be discharged through the soil discharge hole.

A cover machine according to an embodiment of the present invention may be configured to include the above-described mudguard device.

More specifically, the cover unit according to an embodiment of the present invention includes a main frame in which a connection portion to a tractor is installed; A bevel gear box installed at the bottom of the main frame and receiving power from the tractor; A power transmission shaft extending to both sides from the bevel gear box; A rotating blade fixing flange rotatably coupled to the power transmission shaft; A plurality of rotating blades coupled to the rotating blade fixing flange; A mainframe square tube extending in both transverse directions from the mainframe; A sliding angle tube connected to the respective main frame angle tubes in a slidable state, respectively; A hydraulic cylinder operatively engaged with the sliding angle tube so that the sliding angle tube is guided by the main frame angle tube and can be slid to the main frame side or vice versa, and connected to the hydraulic line of the tractor within the main frame; A side frame fixed to each of the main pipes of the main frame at a position corresponding to the rotating blade; And a retaining plate coupled to an end portion of the sliding square tube. The retaining plate blocks the soil that is crushed by the rotating blade while the sliding angle pipe is slid toward the main frame due to the contraction of the hydraulic cylinder.

The cover according to an embodiment of the present invention may further include a mudguard device tube fixed to the end of the sliding tube. The retaining plate is coupled to the retaining plate frame coupled to each tube of the retaining device, and the retaining plate frame may be provided with a fixing groove forming portion for fixing the side frame when the hydraulic cylinder is contracted.

On the other hand, a soil discharge hole is formed in each tube of the mudguard device, and when the sliding square tube is contracted by the hydraulic cylinder, the soil inside each tube of the mudguard device can be discharged through the soil discharge hole.

In addition, an additional configuration may be further included in the mudguard device of the present invention or a cover machine including a mudguard device.

According to the present invention, it is possible to provide a soil clogging device for a demodulator that can selectively carry out soil clogging when it is necessary to prevent the soil from being blown outward during a farming operation by digging and blowing soil with a rotating blade.

Further, according to the present invention, a cover machine equipped with such a mudguard device may be provided.

1 is a photograph of a state in which the operation of digging and digging the soil with a rotary blade of a conventional cover machine is performed.
FIG. 2 is a view showing a cover machine equipped with a retaining device according to an embodiment of the present invention, and is a view showing a state in which the slider's angle tube is extended to the maximum by a hydraulic cylinder.
FIG. 3 is a view showing a cover machine equipped with a retaining device according to an embodiment of the present invention, showing a view viewed from a different direction from FIG. 2, and showing a state in which the slider tube is contracted to the maximum by a hydraulic cylinder. It is a drawing.
4 is a view showing a view from below from a demodulator having a mudguard device according to an embodiment of the present invention.
5 is a view showing a cylinder structure for stretching or contracting the slider tube of the mudguard device according to an embodiment of the present invention.
6 is a photograph of a working state by a cover machine equipped with a mudguard device according to an embodiment of the present invention.
7 is another photograph of a working state by a demodulator equipped with a mudguard device according to an embodiment of the present invention.

For a detailed description of the present invention, which will be described later, reference is made to the accompanying drawings that illustrate, by way of example, specific embodiments in which the present invention may be practiced. These embodiments are described in detail enough to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described in this specification may be implemented by changing from one embodiment to another without departing from the spirit and scope of the present invention. In addition, it should be understood that the position or arrangement of individual components within each embodiment may be changed without departing from the spirit and scope of the present invention. Therefore, the detailed description to be described later is not intended to be taken in a limiting sense, and the scope of the present invention should be taken to cover the scope claimed by the claims of the claims and all equivalents thereto. In the drawings, similar reference numerals denote the same or similar components throughout several aspects.

Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to enable those skilled in the art to easily implement the present invention.

Before explaining the mudguard device according to an embodiment of the present invention, the structure of the cover function performing the function of digging and blowing the soil will be briefly described.

The entire structure shown in Figure 2 is a cover 100 mounted to the rear of the tractor. The cover machine extends to both sides from the tractor mounting portion 11 at the rear of the main frame 10 around the main frame 10, the bevel gear box 12 at the bottom of the main frame 10, and the main frame 10. (13), the main frame includes a side frame 20 mounted to both sides of each tube (13). In the lower end of the side frame 20 of the cover 100 shown in FIG. 2 (opposite to the tractor), a soiling blade 21 is installed. A scattering part 22 is installed at the bottom of the front side of the side frame 20 (the tractor side), and a wheel 23 is connected to the scattering part 22. The bevel gear box 11 installed at the bottom of the main frame 10 includes a PTO input shaft 14. Power transmission shafts 15 extend on both sides of the bevel gear box 11, and each power transmission shaft 15 is coupled to a rotating blade fixing flange 16. A circular plate is installed at an end of the rotating blade fixing flange 16, and a plurality of rotating blades 17 are provided around the circular plate.

The bevel gear box 12 receives the power of the tractor from the PTO input shaft 14 and rotates the power transmission shaft 15. The rotating blade fixing flange 16 and the rotating blade 17 installed therein rotate according to the rotation of the power transmission shaft 15. As the rotating blade 17 rotates, the soil is crushed and blown. In FIG. 2, a soiling blade 21 is installed at the rear of the rotating blade structure. This earthen blade 21 cuts the ground and makes a goal. Since the rotating structure is installed toward the tractor of the cutting blade 21, the rotating structure first crushes and blows the soil, thereby making it easier to dig the soil by the cutting blade 21. On the other hand, the soil crushed and blown by the rotary blade 17 is blocked by the earthen blade 21, so that the soil can be prevented from being piled up by the already dug out, thereby effectively excavating the soil by digging the ground to form a valley. Can be implemented. While the earthen blade 21 prevents the soil from being blown by the dug, the scattering part 22 serves to guide the soil to be blown so that the soil that is crushed and blown can be sprayed upward. The wheel 23 performs a function of facilitating driving on the soil floor when the cover 100 is dragged by the tractor. The side frame 20 is connected to each main frame 13 by a clamp 24. Since the coupling and disengagement by the clamp 24 is possible, it is possible to change the position where the side frame 20 is installed on each main frame 13. As a configuration related to the clamp 24, it refers to a coupling portion between the power transmission shaft 15 and the rotating blade fixing flange 16. 2, a hole is drilled in the power transmission shaft 15, and a plurality of holes are also drilled in the rotating blade fixing flange 16. As shown in FIG. By selecting a hole coupled to the hole of the power transmission shaft 15 among the plurality of holes of the rotating blade fixing flange 16, the bolt is engaged to fix the fixed position on the power transmission shaft 15 of the rotating blade fixing flange 16. Can be changed. The position where the rotary blade 17 is installed should correspond to the installation position of the side frame 20. Therefore, as described above, if the position where the side frame 20 is installed in the main frame 13 is changed by adjusting the clamp 24, the rotating blade fixing flange 16 is also mounted on the power transmission shaft 15 accordingly. It is necessary to change the position to be installed in order to adjust the width of the goal being dug by the cover 100.

In the embodiment shown in FIG. 2, the agricultural machine indicated by reference numeral 100 is referred to as a cover machine. However, as described in the background section of the present specification, a farm machine capable of performing the function of a soil by installing a soiling blade is installed on a soil-breaking machine, which may also be referred to as a soiling machine. That is, in FIG. 2, the agricultural machine indicated by reference numeral 100 is referred to as a cover machine by focusing on the operation of a rotating blade that crushes and blows the soil, but also includes a soiling blade or a soiling machine that performs a soiling function by including a corresponding means. It should be understood that it is included in the scope of the invention.

Next, the mudguard 30 provided outside the side frame 20 will be described.

The retaining device 30 is connected to the mainframe square tube 13 by the slider square tube 31. The mainframe square tube 13 may be implemented with, for example, a square tube having a width and height of 100 mm, and the slider square tube 31 may be implemented with a square tube with a width and width of 85 mm, for example. That is, the slider square tube 31 is a structure that can be inserted into the main frame square tube 13. The slider angle tube 31 may slide into the main frame side (inside the cover) or the opposite side (outside the cover) in the state inserted into the main frame angle tube 13. At the end of the slider tube 31, a retaining device tube 32 is fixedly installed. The mudguard angle tube 32 may be implemented, for example, with a width and height of 125 mm.

A mudguard plate 33 is installed under each mudguard 32. In order to reinforce the structural strength of the retaining plate 33, the retaining plate frame 34 is firmly fixed to each tube 32 of the retaining device, and is combined with the retaining plate 33. A fixing groove forming portion 35 is fixedly installed in the retaining plate frame 34 in a protruding manner. The fixing groove of the fixing groove forming part 35 faces the inner side frame 20, and when the slider angle pipe 31 is completely sliding to the main frame side and completely received by the main frame angle pipe 13, the side frame 20 It serves to hold and fix each pipe. As described above, since the slider square tube 31 is accommodated in the main frame square tube 13 and must be slid to the main frame side or the opposite side therein, the slider square tube 31 and the main frame square tube 13 have a certain degree. Tolerances exist. Due to this tolerance, the slider angle tube 31 can rotate a predetermined angle clockwise or counterclockwise relative to the mainframe angle tube 13. That is, it can rattle. When the fixing groove forming portion 35 holds the square pipes of the side frame 20 to fix them, the slider square pipe 31 can be prevented from rattling in a state that is completely received by the main frame square pipe 13.

The retaining plate 33 may be implemented in a circular arc shape with an empty interior as shown in FIG. 2. When the soil is crushed and scattered by the rotation of the rotating blade 17, the direction of scattering of the soil by the centrifugal force is outside. Therefore, since there is little possibility that the soil is blown from the inside, the retaining plate 33 can be implemented in an empty shape. When the retaining plate 33 is manufactured in an arc shape with an empty inside, the weight of the retaining plate 33 is reduced, and thus an advantageous effect that a small load is applied to the sliding motion of the slider tube 31 is generated. As described above, since the direction in which the soil is scattered by centrifugal force is outside, it cannot be said that the necessity of the configuration for preventing the inside scattering of the soil is large, but in some cases, the circular arc border inside the earthen plate as shown in FIG. Accordingly, by installing the inner mudguard 36, it is possible to additionally prevent the soil from escaping through the empty place inside the mudguard plate 33. In addition, the inner shape of the circular arc of the retaining plate 33 is manufactured in consideration of the shape of the side frame 20. The retaining plate 33 is completely stored inside the main frame square tube 13 of the slider square tube 31, that is, in a state in which a cylinder not shown in the figure slides the slider square tube 31 completely toward the main frame side, within Since the side comes into contact with the side frame 20, the inner surface shape should be selected so as not to collide with the soil blade 22 and the scattering part 22 mounted to the side frame 20.

The structure of the clogging device 30 for blocking soil scattered by the rotary blade 17 has been described with reference to FIG. 2, but as shown in FIG. 2, both slider angle tubes 31 are formed by elongation of the cylinder. In a state in which they are all sliding to the opposite side of the main frame, the effect of blocking the scattering of the soil by the retaining device 30 does not occur. The effect of blocking soil scattering occurs when the slider tube 31 is slid toward the main frame due to the contraction of the cylinder.

FIG. 3 shows a view of the cover 100 shown in FIG. 2 from a different angle, and, unlike the state of FIG. 2, shows the state in which the slider tube 31 is completely slid toward the mainframe.

In this state, the soil dug by the rotary blade 17 hits the retaining plate 33, and thus is prevented from flying out of the retaining plate 33. It can be confirmed from the illustration of FIG. 3 that the above-described fixing groove forming portion 35 fixes the respective pipes of the side frame 20. In this state, the fixed receiving state in the main frame angle tube 13 of the slider angle tube 31 to which the retaining plate 33 is connected can be further strengthened. In addition, from FIG. 3, the structure in which the inner shape of the retaining plate 33 matches the structure of the side frame 20 to prevent the soil from being blown out of the retaining plate 33 can be more specifically confirmed. As shown in FIG. 3, no inner protrusion is formed in the inner surface of the retaining plate 33 corresponding to the position where the scattering portion 22 of the side frame 20 is formed. This is to prevent collision between the retaining plate 33 and the side frame 20 structure when the slider square tube 31 is completely stored as described above. However, it can be confirmed that a structure protruding inward is formed at an upper portion of the inner surface of the retaining plate 33 corresponding to the position where the scattering portion 22 of the side frame 20 is formed to prevent scattering of the soil. have. As such, a structure for preventing scattering of the soil from the outside may be additionally formed on the inside of the retaining plate 33 to the extent of preventing collision with the structure of the side frame 20. It is natural that the inner shape of the retaining plate 33 should be formed not to interfere with the rotation of the rotating blade 17 as well as the structure of the side frame 20 as described above.

 4 is a view showing a view from below from a demodulator having a mudguard device according to an embodiment of the present invention. The structure of the embodiment of the present invention described in FIGS. 2 and 3 will be more clearly understood with reference to FIG. 4.

In FIG. 4, the soil discharge hole 36 drilled in the lower portion of each tube 32 of the mudguard device can be confirmed. Since the mudguard angle tube 32 is fixed to the end of the slider angle tube 31, when the slider angle tube 31 is completely accommodated in the main frame angle tube 13, it is combined with the main frame angle tube 13. As described above, in the embodiment of the present invention, since the mainframe square tube 13 is 100 mm wide, the slider square tube 31 is 85 mm wide, and the mudguard angle tube 32 is 125 mm wide, the slider square tube 31 ) When the cylinder is completely accommodated in the mainframe tube 13 due to the contracting action of the cylinder, the mudguard device tube 32 is combined with the mainframe tube 13 in the form of receiving the mainframe tube 13. Here, the coupling does not mean fixing by the fixing means, but temporary overlapping. However, when the blown soil penetrates into each of the mudguard 32, the mudguard 32 can receive the mainframe 13 and prevent them from reaching each other. That is, when the slider angle tube 31 is to be in a completely stored state (a state in which it is completely sliding toward the main frame), the soil accumulation device angle tube 32 accumulated in the inside of the angle device 32 prevents the main frame angle tube 13 from being built up. It is possible to prevent the slider tube 31 from reaching the fully stored state by preventing the coupling in the form of receiving. When this occurs, the mudguard device 30 according to an embodiment of the present invention does not reach the state shown in FIG. 3, and a gap exists between the mudguard device 30 and the side frame 20, thereby preventing the mudguard device ( 30) is unable to prevent the soil from flying out well. The above-mentioned soil discharge hole 36 is provided in each tube 32 of the earthing device for solving this problem. Even if dirt accumulates inside the mudguard 32, the soil is crushed by the rotating blade 17, so that when the slider square 31 is received as the mainframe square 13 due to the contraction of the cylinder, the mainframe squares By the end of (13), it can be easily pushed out from the inside of each tube 32 of the blocking device and can be easily discharged by the soil discharge hole (36). In the embodiment of Figure 4, the soil discharge hole 36 is shown as being provided at the bottom of each tube 32 of the earth retaining device, but the position of the soil discharge hole 36 is not limited to this, and facilitates soil discharge. One mudguard device can be formed at any position of each tube 32.

5 is a view showing a cylinder structure for sliding the slider tube of the mudguard device according to an embodiment of the present invention.

The cylinder 40 is hydraulically connected to the tractor side in the main frame 10, and as shown in FIG. 5, the piston end is coupled to the slidable sliding angle pipe 31 while being accommodated inside the main frame angle pipe 13 . The connection between the cylinder 40 and the tractor-side hydraulic circuit can be implemented in various ways, and preferably, the two pistons shown in FIG. 5 can be hydraulically controlled so that they can extend or contract independently of each other. . 6 and 7 are referred. It can be seen from FIG. 6 that the two pistons are contracted, so that both sliding angle pipes 31 are accommodated inside both main frame angle pipes 13, and the blocking function by both blocking devices 30 is performed. On the other hand, from FIG. 7, the left piston of the two pistons is in an extended state, and the right piston is in a contracted state, so that only the right sliding angle tube 31 is received inside the right mainframe angle tube 13 to the right mudguard device 30. It is possible to confirm the state in which the mudguard function is being performed.

As described above, the mudguard device 30 according to an embodiment of the present invention selectively operates the cylinder 40 connected thereto, thereby closing both mudguard plates 33 or closing either one or both. can do. As a result, it is possible for the worker to effectively perform the soiling work while realizing the desired type of soiling.

Although the present invention has been specifically described by specific matters such as components and limited examples and drawings, it is provided to aid the overall understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention Those skilled in the art can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention is not limited to the above-described embodiments, and should not be determined, and all ranges that are equally or equivalently changed to the claims, as well as the claims to be described later, belong to the spirit category of the present invention. will be.

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Claims (9)

It is a mudguard device mounted on a cover machine that crushes and blows soil by rotation of a rotating blade.
A sliding angle tube connected to a main frame angle tube extending from the main frame of the cover machine in a slidable state,
A hydraulic cylinder operatively engaged with the sliding angle tube so that the sliding angle tube is guided by the main frame angle tube and can be slid to the main frame side or vice versa;
And the end of the sliding angle pipe and the sliding cylinder tube by the contraction of the hydraulic cylinder in the state of sliding to the main frame side of the crushed and crushed by the rotating blade to prevent the soil plate,
The main frame includes a side frame fixedly installed in each tube and equipped with a clay blade,
The retaining plate is supported by the side frame when blocking the soil by contraction of the hydraulic cylinder,
Mudguard. According to claim 1,
Each mainframe tube extends in both sides of the mainframe,
The sliding angle pipes are stored in each of the main frame angle pipes,
The hydraulic cylinder is capable of selectively sliding individual sliding angle pipes accommodated in each of the respective main frame angle pipes to the main frame side or vice versa,
Mudguard. According to claim 2,
The support of the retaining plate by the side frame is implemented by a fixing groove forming unit that fixes the side frame when the hydraulic cylinder is contracted.
Mudguard. According to claim 3,
Containing each of the mudguard fixed tube at the end of the sliding tube,
The retaining plate is coupled to the retaining plate frame coupled to each tube of the retaining device,
The fixing groove forming portion is installed on the retaining plate frame,
Mudguard. According to claim 4,
Soil discharge holes are formed in each tube of the mudguard device, and the inside of each tube of the mudguard device is discharged through the soil discharge hole when sliding on the main frame side of the sliding tube by the hydraulic cylinder,
Mudguard. Claim 1 or claim 5, the soil cover comprising a mudguard device according to any one of claims. The main frame where the connection to the tractor is installed,
Bevel gear box is installed at the bottom of the main frame to receive power from the tractor,
A power transmission shaft extending in both transverse directions from the bevel gear box,
And a rotating blade fixed flange that is rotationally coupled to the power transmission shaft,
A plurality of rotating blades coupled to the rotating blade fixing flange,
A mainframe square tube extending laterally from the mainframe,
A sliding square tube connected to each of the main frame tubes in a slidable state,
A hydraulic cylinder which is operatively coupled with the sliding angle tube so that the sliding angle tube is guided by the main frame angle tube and can be slid to the main frame side or vice versa, and connected to the hydraulic line of the tractor within the main frame;
A side frame fixed to each of the main pipes of the main frame at a position corresponding to the rotating blade,
And the end of the sliding angle pipe and the sliding cylinder tube by the contraction of the hydraulic cylinder in the state of sliding to the main frame side of the crushed and crushed by the rotating blade to prevent the soil plate,
The main frame includes a side frame fixedly installed in each tube and equipped with a clay blade,
The retaining plate is supported by the side frame when blocking the soil by contraction of the hydraulic cylinder,
Soil cover. The method of claim 7,
Containing each of the mudguard fixed tube at the end of the sliding tube,
The retaining plate is coupled to the retaining plate frame coupled to each tube of the retaining device,
A fixing groove forming portion for fixing the side frame when the hydraulic cylinder is contracted is installed on the retaining plate frame,
Soil cover. The method of claim 8,
Soil discharging holes are formed in each tube of the mudguard device, and the inside of each tube of the mudguard device is discharged through the soil discharge hole when sliding on the main frame side of the sliding tube by the hydraulic cylinder,
Soil cover.

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