JP2023099335A - Rotating and attachable/detachable harrow-integrated-type rotavator - Google Patents

Abstract

To provide a harrow-integrated-type rotavator including foreign matter removal means for burying foreign matters such as straws rising onto the ground during paddy field leveling work.SOLUTION: A folder-type rotavator configured to be folded so as to raise a first tillage part and a second tillage part from both left/right sides of a top master in order to quickly move the rotavator to a position desired to till, comprises harrow parts for ground leveling work integrally connected to lower ends of respective leveling plates of the first tillage part and the second tillage part. Each harrow part includes foreign matter removal means for burying foreign matters such as straws under the ground during the ground leveling work, and harrow rotational means for lifting the harrow upward when not performing the leveling work.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotavator mounted on a tractor or a tiller, and more particularly to a rotavator integrated with a hoe that can be lifted by rotating the hoe, and that can be attached and detached.

A rotavator is generally a working machine attached to a tractor or a tillage device, and is mounted on the tractor and rotates a blade using PTO power while moving to cut or dig up the soil. Mainly used for organizing.

Here, the cultivated land is plowed to a depth of about 100 to 200 mm to restore the alkalinity of the soil and at the same time restore the air permeability and drainage of the soil to remove parasite eggs and the like. including soil cover work for

In general, a rotavator consists of a frame that is connected to the rear of the tractor so that it can be raised and lowered, a rotary shaft that is connected to the power transmission joint of the tractor and driven by the lower part of the frame, and a number of rotary shafts that are installed at regular intervals. and a grading panel for leveling the fields dug up by these rotary blades, the frame is a hydraulic cylinder connected to a linkage for coupling to the rear of the tractor. The rotary blade is connected to the PTO (power take off) mounted on the transmission of the tractor and is driven by the driving force of the engine.

Therefore, the rotavator having such a structure is mounted at the rear of the tractor, and can perform tilling work by digging up the soil of fields and fields while rotating the rotary blades connected to the power transmission joint of the tractor at high speed. In addition, by inserting the rotary blade into the bottom of the rice field at a certain depth and rotating it at high speed to dig up the bottom of the rice field, the whole rice field can be planted with seedlings while dragging the rotavator with a tractor. Make it flat and mushy without bending.

In order to move the rotavator quickly to a desired tilling position, the applicant has developed a folder-type rotavator in which the first and second tillage sections can be folded up from both the left and right sides of the top master. A rotavator has been filed in Korean Patent Application No. 2021-0065553 dated May 21, 2021.

The configuration of this folder-type rotavator will be described below with reference to FIG.

FIG. 1 shows a conventional folder type rotator filed by the present applicant, FIG. 1a is a drawing showing a schematic configuration of the folder type rotator, and FIG. 1b is a diagram of the folder type rotator. FIG. 1c shows a state in which the first tillage unit is folded, and FIG. 1c shows a state in which the first and second tillage units of the folder-type rotavator are completely folded.

The folder-type rotavator includes a first plowing unit 20 and a second plowing unit 20' that are foldable and standable so as to be moved to a plowing position while connected to the rear of the tractor. The first tiller 20 and the second tiller 20' are connected to the left and right sides of the top master 10 including the drive transmission 11 so as to be rotatable and drivable.

The first tilling unit 20 and the second tilling unit 20' are configured to rotate to grind the top master 10 in both directions and to be folded upright. At the ends of 20, 20', for example between one side of each drive shaft 23, a telescopically operable cylinder arm 24 is provided.

The erection of the first tillage section 20 and the second tillage section 20' by the contraction operation of the cylinder arm 24 is performed around the rotation shafts 13 provided at both ends of the top master 10. The first tillage section 20 and the second tillage section 20' are erected together with the cylinder arm 24 through the support base 26 which is connected on one side and fixed to the upper ends of the first tillage section 20 and the second tillage section 20' on the other side. can be maintained.

In the drawings, the unexplained reference numeral '21' indicates a 'graded plate' for grading paddy fields.

In addition, the present applicant filed an application for a horse-hoe-integrated rotator in which a horse-hoe is integrally formed in Korean Patent Application No. 2017-0043116 on April 3, 2017, and was registered as Patent No. 1897671.

As is well known, a harrow uses the axial force of a tractor to cut the soil of a rice field or field, or during tilling work such as digging, to break up the soil clods of the plowed field or level the ground. It is an agricultural machine used for rice planting, and is mainly used for paddy field leveling work, and is generally connected to the back of a tractor.

In Korean Patent Application No. 2017-0043116 filed by the present applicant, a new type of rotavator, in which a rotavator and a horse hoe are integrally formed, is provided so that the rotavator can be used for tilling and leveling paddy fields at the same time. provided.

However, in the case of such a hoe-integrated rotavator, the tip of the hoe is fixed, which reduces the ability of the hoe to flatten during land-leveling work. There is a high possibility of this happening, and there was a problem that it interfered with the movement of the rotavator when the ground was not being leveled.

In particular, in the case of tilling work in which the soil is dug up in a rice field, foreign matter such as straw often rises up, which causes a lot of trouble for the workers during work such as rice planting. Additional work, such as burying it under the ground, was necessary during the ongoing paddy field leveling work.

DISCLOSURE OF THE INVENTION The present invention was developed to solve the above-mentioned problems. It is an object of the present invention to provide a rotator structure integrated with a hoe which is provided with a hoe rotating means so that the hoe can be easily attached and detached as required.

Another object of the present invention is to provide a hoe-integrated rotavator structure having foreign matter removing means for burying foreign matter such as straw that has risen on the ground during paddy field leveling work.

According to one aspect of the present invention for achieving the above object, a hoe-integrated rotator capable of rotating and lifting the hoe, and detachable, comprises a hoe part for leveling work. The hoe part, which is integrally connected to the lower end of the leveling plate, has a foreign substance removing means for burying foreign substances such as straw under the ground during leveling work, and a horse hoe when the leveling work is not performed. A hoe-integrated rotavator is provided that includes a hoe-rotating means for upward lifting and a hoe-disconnecting means.

In the present invention, the foreign matter removing means is composed of a V-shaped wire, and the hoe plate is formed with a large number of fitting holes into which the vertical portions of the V-shaped wire are fitted. , a number of projections for supporting the horizontal part of the wire protrude in the vertical direction of the hoe plate, and the projections have an inclined structure in which the height gradually increases and the width gradually increases from the top to the bottom. The horizontal portion of the wire has a shape in which the middle portion is vertically bent, and the bent middle portion has a trapezoidal shape so as to be in close contact with the projections of the horse hoe plate so as not to sway back and forth. have.

In addition, the horse hoe rotating means is telescopically installed on the upper end of each ground leveling plate of the first tilling section and the second tilling section in order to vertically rotate the horse hoe section. An elevating cylinder hinged to the hoe-side end of a rotating arm that connects the main plate and the upper end of the hoe, and the elevating cylinder moves in both directions so that the hoe can be raised and lowered by the operation of the elevating cylinder. and a hoe fixing device configured to fix between the ground leveling plate and the hoe part, and the other end of the rotating arm is rotatably hinged to the ground leveling plate, and the The pivot arm has a round structure.

Here, the hoe fixing device includes an operation handle inserted into a plurality of support brackets fixed to the ground leveling plate, and a plurality of locking levers locked to the operation handle so as to connect the ground leveling plate and the hoe section. wherein the steering handle consists of two rods of different lengths with U-shaped handles, the longer rods being inserted into at least three support brackets fixed to the leveling board. The supported short rod is inserted into the first bracket located in front of the support bracket through which the long rod passes, and the first bracket has a hole through which the tip of the short rod passes. It has a passage hole and a resting hole in which the tip of the short rod is rested in a locked state so that the long rod is pulled backward.

The locking lever is located between the ring lever through which the long rod of the steering handle passes near the third bracket located at the rearmost of the support bracket through which the long rod passes, and between the first bracket and the third bracket. and a hook lever resting on the long rod of the steering handle near the second bracket of the steering handle with a coil spring wound on the surface of the long rod between the first and second brackets. It is configured so that the short rod can be rotated around the long rod by pulling the handle of the steering handle.

According to the above features, the present invention solves the problem of obstructing the movement of the rotavator by using the hoe rotating means to lift the hoe upwards when the ground is not being leveled. Further, when necessary, the hoe can be easily attached and detached through a simple operation together with the hoe rotating means.

In addition, according to the present invention, foreign matter such as straw that has risen on the ground during tilling work can be buried under the ground using the foreign matter removing means during the leveling work process. , it will be possible to maintain a clean site condition.

Fig. 2 shows (a) the configuration of the Applicant's conventional folder-type rotavator and different operating states (a, b, c); Fig. 2 shows (b) the configuration of the Applicant's conventional folder-type rotavator and different operating states (a, b, c); Fig. 2(c) shows the configuration of the Applicant's conventional folder-type rotavator and different operating states (a, b, c); BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the overall configuration and appearance of a horse-hoe-integrated rotavator according to the present invention; Fig. 3 is a front view of the integrated horse-hoe rotavator according to Fig. 2; FIG. 3 is a rear view of the horse-hoe rotavator according to FIG. 2; FIG. 3 is an enlarged perspective view showing the configuration of a hoe part provided in the rotator with integrated hoe of FIG. 2 ; FIG. 3 is a perspective view showing a state before operation of a horse-hoe rotating means provided in the horse-hoe-integrated rotator of FIG. 2 ; FIG. FIG. 3 is a front view showing a state before operation of a hoe rotating means provided in the rotator with integrated hoe of FIG. 2 ; FIG. 3 is a side view showing a state before operation of a hoe rotating means provided in the rotator with integrated hoe of FIG. 2 ; FIG. 3 is a perspective view showing a state after operation of a horse-hoe rotating means provided in the horse-hoe-integrated rotator shown in FIG. 2; FIG. 3 is a plan view showing a state after operation of a hoe rotating means provided in the rotator with integrated hoe of FIG. 2 ; FIG. 3 is a side view showing a state after operation of a hoe rotating means provided in the rotator with integrated hoe of FIG. 2 ;

FIG. 2 shows a schematic appearance of the horse-hoe-integrated rotavator according to the present invention, showing the rear surface of the rotavator. FIG. 3a is a front view showing the front structure of the horse-hoe-integrated rotavator according to the present invention, and FIG. 3b is a rear view showing the rear-surface structure of the horse-hoe-integrated rotavator.

As shown in the drawing, the rotavator shows a state in which the first tillage section 20'' located on one side of the top master 10 is erected by the operation of the cylinder arm 24. Here, the first tillage section 20'' and The lower end of the ground leveling plate 21 of the second tillage unit 20''' is connected with a horse hoe part 40 for leveling the paddy field, and each horse hoe part 40 buries foreign matter such as straw in the leveling work of the paddy field. According to the present invention, the leveling plates 21 of the first tilling section 20'' and the second tilling section 20''' are in contact with the ground to carry out the paddy field leveling work. The additional installation of the horse hoe part 40 at the lower end of the ground leveling plate allows it to be inserted deeper into the ground during leveling work in paddy fields, enabling more efficient removal of foreign matter at the same time as leveling work. The part 40 can be installed at the lower end of the rear surface of the leveling plate 21 in an oblique state with respect to the moving direction of the rotavater. Even when the hoe part 40 is separated from the leveling plate 21, the ground leveling plate 21 is kept in contact with the ground at all times, so that there is no negative influence on the paddy field leveling work.

On the other hand, FIGS. 2 and 3 show an example in which the technical idea of the present invention is applied to a foldable folder-type rotator, which is an embodiment. It goes without saying that the present invention is applicable not only to betas, but also to rotavator structures having a single plowing section. The configurations of the horse hoe section 40 and the foreign matter removing means 50 will be described with reference to FIG.

FIG. 4 shows an enlarged view of the configuration of the hoe section installed at the lower end of the rear surface of the ground leveling plate. A foreign matter removing means 50 for burying is installed below.

The foreign matter removing means 50 is made of a wire-like elastic body, and a large number of fitting holes 43 are formed at regular intervals in the horse hoe plate 41 in order to install the foreign matter removing means. A large number of protrusions 42 for supporting the foreign matter removing means 50 protrude in the vertical direction of the horse hoe plate 41 between them. Such protrusions 42 preferably have a generally pyramidal sloping structure that becomes taller and wider from top to bottom.

The foreign matter removing means 50 has a ∩ shape, and both vertical portions 52 of the ∩ are configured to be fitted into the fitting holes 43 located on both sides of the protrusion 42 of the horse hoe plate 41 . As shown in FIG. 4, the vertical portion 52 is inserted from the rear side to the front side of the rotavator from the lower end of the vertical portion 52 . As shown in the figure, the vertical part 52 descends in close contact with the inclined front surface (not shown) of the hoe plate 41 and is installed to be exposed in the rear direction of the hoe plate 41 . As shown in FIG. 4, the foreign matter removing means 50 has a shape in which the intermediate portion 51a of the horizontal portion 51 is bent vertically upward so as to enable such installation. It is preferable that this bent portion 51a (intermediate portion) has a substantially trapezoidal shape so as to be in close contact with the projection 42 .

The foreign matter removing means 50 configured as described above slides along the rotovate during the ground leveling work by the hoe portion 40, rakes up foreign matter such as straw exposed on the ground, and buries it under the ground. However, in this process, since the bent portion 51a of the horizontal portion 51 of the foreign matter removing means 50 has a trapezoidal shape, the foreign matter removing means 50 is brought into close contact with the projections 42 of the horse hoe plate 41, and can maintain a stable connection without shaking back and forth. Therefore, the operation of burying the foreign matter can be smoothly performed.

The hoe-integrated rotavator of the present invention further includes a hoe rotating means configured so that the hoe portion can be lifted upward so as not to interfere with tilling work when land leveling work is not performed.

Such a hoe rotating means will be described in detail with reference to FIGS. 4 and 5. FIG.

FIG. 5 shows a state before the operation of the hoe rotating means provided in the rotavator integrated with the hoe of the present invention, in which the hoe portion is facing the ground for paddy field leveling work using the hoe. is shown.

As shown, the horse hoe section 40 is coupled at its upper end 44 by a lifting cylinder 70 so as to be vertically rotatable. The elevating cylinder 70 is one element that constitutes the hoe rotating means. , and the other end 73 (hinge portion) of the rotating arm 71 is rotatably hinged to the leveling plate 21 . Due to this type of connection, the horse hoe part 40 is lowered by the extension of the lifting cylinder 70 during leveling work and maintains contact with the ground (see FIG. 5C). contraction, it maintains an upwardly lifted state (see Fig. 6c). In order to facilitate the lifting and lowering of the horse hoe section 40 by the lifting cylinder 70, the rotating arm 71 preferably has a round structure as shown in FIG.

As another element that constitutes the hoe rotating means, the present invention includes the ground leveling plate 21 and the hoe portion 40 in both directions of the lifting cylinder 70 in order to enable the lifting and lowering of the hoe portion 40 by operating the lifting cylinder 70 . Provide a hoe fixing device 60 configured to fix between

The horse hoe fixing device 60 includes an operation handle 61 inserted into a plurality of support brackets 211 , 211 ′ and 212 fixed to the ground leveling plate 21 , and engaged with the operation handle 61 so as to connect the ground leveling plate 21 and the horse hoe section 40 . and a plurality of locking levers 45a, 45b to be locked.

The steering handle 61 has a U-shaped handle and consists of two rods of different lengths, with one rod 61a extending longer than the other rod 61b. The long rod 61a is inserted into and supported by at least three support brackets 211, 211', 212 fixed to the leveling plate 21, and the short rod 61b is a support bracket through which the long rod passes. is inserted into the first bracket 212 located at the forefront of the . The first bracket 212 has a hole 212a (hereinafter referred to as a 'passing hole') through which the end of the short rod 61b passes, and the end of the short rod 61b is engaged so that the long rod 61a is pulled backward. and another hole 212b (hereinafter referred to as a 'stationary hole') that is left stationary.

The locking levers 45a and 45b are annular locking levers 45a (hereinafter referred to as ') through which the long rod 61a of the steering handle 61 passes near the third bracket 211 positioned at the rearmost of the support brackets through which the long rod 61a passes. A hook-shaped locking lever 45b (hereinafter referred to as a ring lever') is provided to rest on the long rod 61a of the steering handle 61 near the second bracket 211' between the first bracket 212 and the third bracket 211. , 'hook lever') are provided.

Preferably, the steering handle 61 is resiliently supported between the first bracket 211 and the second bracket 211' with a coil spring s wound around the surface of the long rod 61a. can rotate the short rod 61b around the long rod 61a by pulling the handle. When the handle of the steering handle 61 is pulled, the coil spring s is compressed, and when the handle is released after rotating the short rod 61b, the coil spring s returns to its original state.

According to the present invention, when the handle of the steering handle 61 is pulled to rotate the short rod 61b, the long rod 61a of the steering handle 61 is configured to escape from the third bracket 211 and the ring lever 45a. Also, in this case, the short rod 61b of the steering handle 61 is configured to come out from the passage hole 212a and be resiliently supported by the coil springs on the surface of the long rod 61a while being locked in the stationary hole 212b.

5a to 5c, in the rotavator with integrated horse hoe of the present invention, the hoe 40 descends as the elevating cylinder 70 extends and the rotating arm 71 rotates downward when the hoe 40 performs ground leveling work. , to maintain contact with the ground (see FIG. 5c). With the short rod 61b of the steering handle 61 inserted into the passage hole 212a, the hook lever 45b is engaged with the long rod 61a of the steering handle 61 to maintain the stationary state. (see Figure 5b). As a result, the horse hoe section 40 can stably perform the ground leveling work while being fixed to the lower end of the ground leveling plate 21 .

FIG. 6 shows the state after the operation of the hoe rotating means provided in the rotavator integrated with the hoe of the present invention, and shows the operation state for lifting the hoe upward when the ground leveling work is not performed.

6a to 6c, when the hoe unit 40 is not used for leveling work, the hook lever 45b of the hoe fixing device 60 is first unlocked from the long rod 61a of the steering handle 61. As shown in FIGS. Then, by pulling the handle of the steering handle 61, the long rod 61a of the steering handle is pulled out of the third bracket 211 and the ring lever 45a, and the short rod 61b of the steering handle 61 is pulled out of the passage hole 212a. make sure to In this state, the short rod 61b of the operation handle 61 is rotated around the long rod 61a of the operation handle 61, and the end of the short rod 61b is left stationary while being elastically supported by the coil springs on the surface of the long rod 61a. It is engaged with the hole 212b to maintain the stationary state (see FIGS. 6a-6b). For this reason, the stationary hole 212b is preferably formed to have a diameter smaller than that of the passage hole 212a so that the short rod 61b of the steering handle 61 does not pass through and the stationary state is maintained.

As a result, the horse hoe section 40 is released from the state of being fixed to the lower end of the rear surface of the leveling plate 21 , and becomes rotatable about the hinge section 73 of the rotating arm 71 .

Even in this way, as shown in 6c, when the lifting cylinder 70 is contracted, the hoe section 40 is separated from the ground about the hinge section 73 by rotating the rotating arm 71 upward. It becomes possible to maintain a state of being lifted upward.

On the other hand, in such a configuration, the hoe-integrated rotavator of the present invention is configured so that the hoe section 40 can be separated as required, and the present invention is based on the hoe fixing device 60 illustrated in FIG. After completing the releasing work of 1, the connection at the fastening portion 72 and the hinge portion 73 of the rotating arm 71 connecting the ground leveling plate 21 and the elevating cylinder 70 to the horse hoe portion 40 is released, so that the horse hoe portion 40 can be easily removed. can be separated into

Although the invention has been described in detail or with reference to specific embodiments, the invention is not limited to the embodiments described above. Therefore, it is obvious to those skilled in the art that various changes and modifications can be made within the scope of the claims of the present invention without departing from the technical spirit and spirit of the invention.

10 Top master 20″ First tillage unit 20″″ Second tillage unit 21 Ground leveling plate 211, 211′ 212 Support bracket 212a Passing hole 212b Stationing hole 24 Cylinder arm 40 Horse hoe 41 Horse hoe plate 43 Fitting hole 42 Projection 45a Locking Lever (ring lever)
45b locking lever (hook lever)
50 foreign matter removing means 51 horizontal portion 51a bending portion 52 vertical portion 60 horse hoe fixing device 61 steering handle 61a long rod 61b short rod 70 lifting cylinder 71 rotating arm 72 fastening portion 73 hinge portion s coil spring

Claims (5)

A hoe-integrated rotavator in which a hoe section for leveling work is integrally connected to the lower end of a ground leveling plate,
The hoe section includes hoe rotating means for lifting the hoe plate upward when the ground is not leveled,
The horse hoe rotating means is
a rotating arm that connects the ground leveling plate and the upper end of the horse hoe;
an elevating cylinder telescopically installed on the upper end of the leveling plate, one end of which is hinged to the hoe-side end of the rotating arm;
a hoe fixing device configured to fix between the leveling plate and the hoe section in both directions of the lifting cylinder;
The hoe fixing device includes an operation handle inserted into a plurality of support brackets fixed to the ground leveling plate, and a plurality of locks engaged with the operation handle so as to connect the ground leveling plate and the hoe section. A horse and hoe integrated rotavator, comprising: a lever; Said steering handle consists of two rods of different lengths with U-shaped handles, the long rod being inserted into and supported by at least three support brackets fixed to the leveling board, A short rod having a short length is inserted into a first bracket located in front of the support bracket through which the long rod passes, and the first bracket has a through hole of one hole through which the end of the short rod passes. , and a resting hole in which the end of the short rod is rested in a locked state so that the long rod is pulled backward. Beta. The locking lever includes a ring lever through which the long rod of the steering handle passes in the vicinity of the third bracket located at the rearmost of the support bracket through which the long rod passes, and a third bracket between the first bracket and the third bracket. a hook lever resting on the long rod of the steering handle near the second bracket, the steering handle being elastic with a coil spring wound on the surface of the long rod between the first bracket and the second bracket; 3. A rotavator integrated with a horse and hoe according to claim 2, wherein the handle of the steering handle is pulled so that the short rod can be rotated about the long rod as an axis. It further includes foreign matter removing means for burying foreign matter such as straw under the ground during leveling work, wherein the foreign matter removing means is composed of a ∩-shaped wire, and the horse hoe board has a ∩-shaped wire. A large number of fitting holes are formed into which the vertical portions of the wires are fitted, and between the respective fitting holes, a large number of protrusions for supporting the horizontal portions of the wires protrude in the vertical direction of the horse hoe plate. [Claim 2] The rotavator as claimed in claim 1, wherein the projection has a sloped structure that gradually becomes higher and wider from the upper part to the lower part. The horizontal portion of the wire has a shape in which the middle portion is bent vertically upward, and the bent middle portion has a trapezoidal shape so as to be in close contact with the projections of the horse hoe plate and not to sway back and forth. 5. A horse-hoe rotavator according to claim 4, characterized in that it comprises:

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