KR102442646B1 - Rotatable and detachable harrow integrated rotavator - Google Patents

Abstract

The present invention relates to a harrow integrated rotavator, which is a folder type rotavator for folding a first plowing unit and a second plowing unit for the units to stand upright from both left and right sides of a top master in order to move the rotavator to a position to be plowed quickly. A harrow part for stop work is integrally coupled to each lower end of a stop plate at a first plowing unit and the second plowing unit, wherein each harrow part comprises: a foreign material removal means for burying foreign materials including straw under the ground during the stop work; and a harrow rotation means for lifting the harrow upward when the stop work is not underway.

Description

Rotatable and detachable harrow-integrated rotavator

The present invention relates to a rotavator used by attaching to a tractor or tillage device, and more particularly, to a harrow-integrated rotavator that can be lifted by rotating a harrow and can also be attached and detached.

A rotavator is generally an accessory working machine of a tractor or tillage device. It is attached to a tractor and moves while rotating a blade using PTO power to cut or plow the soil.

Here, arable land consolidation involves cultivating the soil to a depth of about 100 to 200 mm to restore the soil to alkalinity and at the same time to restore the soil's air permeability and drainage and to remove parasite eggs.

In general, the configuration of a rotavator includes a frame connected to the rear of the tractor so as to be elevating, a rotary shaft connected to the power transmission joint of the tractor at the lower portion of the frame and driven, and a plurality of rotary blades installed at regular intervals on the rotary shaft , And to include a grading panel for evenly leveling paddy fields or fields plowed by these rotary blades, the frame is raised and lowered by a hydraulic cylinder connected to a link mechanism for connection to the rear of the tractor, and the rotary blade is the tractor It is a principle that is connected to the PTO (power take-off) mounted on the transmission of the engine and driven by the engine driving force.

Therefore, the rotavator having such a configuration is mounted on the rear of the tractor, and the rotary blade connected to the power transmission joint of the tractor rotates at high speed to plow the soil of the paddy field and the field, and also the rotary blade to the paddy field. By digging the bottom of the paddy field by rotating it to a certain depth and rotating it at high speed, the rotavator is dragged with a tractor and the entire paddy ground is planted without any curvature to make it flat.

In May 2021, a clamshell rotavator in which the first tiller and the second tiller can be folded uprightly from both the left and right sides of the top master in order to allow the rotovator to be moved quickly to the position to be cultivated by the present applicant. It has been filed as Patent Application No. 2021-0065553 on the 21st.

The configuration of this folding type rotator will be described with reference to FIG. 1 as follows.

FIG. 1 shows a folding rotavator applied by the present applicant, and FIG. 1A is a view showing the schematic form of the folding rotavator, and FIG. , and FIG. 1C is a view showing a state in which both the first tiller and the second tiller of the folding type rotavator are folded.

The clamshell rotavator includes a first tillage unit 20 and a second tiller unit 20 ′ configured to be folded and upright in order to move to a place for tillage work in a state of being connected to the rear of the tractor. The first tiller 20 and the second tiller 20 ′ are rotatably and drivably connected to the left and right sides of the top master 10 including the driving mission 11 , respectively.

The first tiller 20 and the second tiller 20 ′ are configured to rotate in both directions of the top master 10 so as to be folded uprightly, and for this purpose, each tiller ( 20) A cylinder arm 24 that is telescopically operated is provided between the ends of 20' and 20', for example, one side of each drive shaft 23 .

The standing of the first tiller 20 and the second tiller 20 ′ by the contraction operation of the cylinder arm 24 may be made around the rotation shafts 13 provided at both ends of the top master 10 , In addition, one side is connected to the rotation shaft 13 and the other side is fixed to the upper ends of the first tiller 20 and the second tiller 20 ′ through a brace 26 that is connected to the cylinder arm 24 and Together, the standing of the first tiller 20 and the second tiller 20 ′ may be maintained.

Reference numeral "21", which is not described in the drawings, denotes a 'stop plate' for performing non-non-grading.

In addition, the present applicant has applied for a harrow-integrated rotavator in which a harrow is integrally formed as a patent application No. 2017-0043116 on April 03, 2017 and has been registered as a patent No. 1897671.

As is well known, a harrow is an agricultural tool used for breaking up the soil in a plowed paddy field or leveling the floor during tillage work to cut or plow the soil in paddy fields or fields by using the axial force of the tractor, and is mainly used for rice transplanting. It is used for non-non-stop work, etc., and is generally used by connecting to the rear of the tractor.

In Patent Application No. 2017-0043116 of the present applicant, a rotavator is provided in a new form in which the rotavator and the harrow are integrated in order to be able to perform the non-stop operation at the same time as the tillage operation by the rotavator.

However, in the case of such a harrow-integrated rotavator, the end of the harrow is fixed, so the flatness of the harrow is lowered during suspending work, and the inflow and stagnation of soil into the harrow itself is highly likely to cause an operation error of the harrow plate, and stop work is performed. When not, there was an inconvenience of causing an obstacle to the movement of the rotavator.

In particular, in the case of the tillage work of plowing the soil in the paddy field, foreign substances such as straw often rise upward, providing a lot of inconvenience to the worker in the work such as rice planting. Additional work such as burying was required.

The present invention has been developed to solve the above problems, and has a harrow rotating means so as to increase the uniform flatness ability during quiescent work and lift the harrow up when not performing a quiescent work, and easily turn the harrow as needed An object of the present invention is to provide a harrow-integrated rotavator structure configured to be detachable.

Another object of the present invention is to provide a harrow-integrated rotavator structure having a foreign material removal means for burying foreign materials such as straw raised on the ground in the non-non-stop operation.

According to one aspect of the present invention for achieving the above object, as a harrow-integrated rotavator that can be rotated and lifted by rotating the harrow and also detachable, the harrow unit for stopping work is integrally coupled to the lower end of the stop plate, the harrow A harrow-integrated rotavator comprising a foreign material removal means for burying foreign substances including straw under the ground during grading work, a harrow rotating means for lifting the harrow upward when not performing a quiescent work, and a harrow attachment and detachment means together is provided

In the present invention, the foreign material removal means is made of a ∩-shaped wire, the harrow plate is formed with a plurality of fitting holes into which the vertical portions of the ∩-shaped wire are fitted, and a projection for supporting the horizontal portion of the wire between each of the fitting holes. A plurality of these harrows protrude in the vertical direction, and the projections have an inclined structure in the form of getting higher and wider from the upper part to the lower part, and the horizontal part of the wire is a form in which the middle part is bent vertically upward. As a result, the bent middle portion has a trapezoidal shape so as not to be in close contact with each protrusion of the harrow plate to cause front and rear fluctuations.

In addition, the harrow rotation means, the first tillage part and the second tillage part to be able to rotate up and down in order to be able to rotate the harrow to be telescopically installed on the upper end of each stop plate, and one end to connect the stop plate and the upper end of the harrow A harrow fixing device configured to fix between the stop plate and the harrow in both directions of the elevating cylinder so that the elevating cylinder is hinged to the harrow side end of the Dongam, and the elevating and lowering of the harrow by the operation of the elevating cylinder is possible. Including, the other end of the pivoting arm is hinged rotatably to the stop plate, the pivoting arm has a rounded structure.

Here, the harrow fixing device includes a control handle fitted to a plurality of support brackets fixed to the stop plate, and a plurality of locking levers hooked to the control handle to connect the stop plate and the harrow, the control handle is U-shaped It consists of two rods of different lengths with a handle of a long rod, and the long rod is supported by being inserted into at least three support brackets fixed to the stop plate, and the short rod is located at the front among the support brackets through which the long rod passes. The first bracket has a through hole, which is a hole through which the end of the short rod passes, and a mounting hole, which is another hole, through which the end of the short rod is mounted in a locked state so that the long rod is pulled backward. do.

In addition, the locking lever is a ring lever through which the long rod of the control handle passes near the third bracket located at the far end of the support brackets through which the long rod passes, and the control handle near the second bracket between the first and third brackets. Including a hook lever mounted on the long rod of the, wherein the control handle is held in a state in which a coil spring is wound on the surface of the long rod between the first bracket and the second bracket, and pulls the handle of the control handle to shorten the long rod as an axis is configured to rotate.

From the above-described features, the present invention is able to solve the problem of hindering the movement of the rotavator by lifting the harrow upwards using the harrow rotating means when not performing a stop operation. In addition, if necessary, the harrow can be easily attached and detached through a simple operation together with the harrow rotation means.

In addition, the present invention can bury dirty foreign substances, such as straw, which has risen above the ground during the tillage operation, under the ground by using the foreign material removal means in the quiescent operation process, so that it is possible to maintain a neat site condition after the operation.

1 is a configuration and operation state diagram of a conventional clamshell rotavator of the present applicant;
2 is a perspective view showing a schematic external form of a harrow-integrated rotavator according to the present invention;
Figure 3 is a front view (3a) and a rear view (3b) showing the rear side showing the front side of the harrow-integrated rotavator according to Fig. 2;
Figure 4 is a view schematically showing an enlarged harrow provided in the harrow integrated rotavator of the present invention,
Figure 5 is a view showing a state before the operation of the harrow rotating means provided in the harrow integrated rotavator of the present invention,
Figure 6 is a view showing a state after the operation of the harrow rotating means provided in the harrow integrated rotavator of the present invention.

Figure 2 shows a schematic external form of a harrow-integrated rotavator according to the present invention, and shows the form of the rear surface of the rotavator. Figure 3a is a front view showing the front structure of the harrow-integrated rotavator according to the present invention, Figure 3b is a rear view showing the rear structure of the harrow-integrated rotavator.

According to the drawing, the rotavator shows a state in which the first tiller 20" located on one side of the top master 10 is erected by the operation of the cylinder arm 24. Here, the first tiller ( At the bottom of the stop plate 21 of 20 ") and the second tillage unit 20"', a harrow unit 40 for non-non-stop work is coupled, and each harrow unit 40 has straw, etc. It can be seen that the foreign material removal means 50 for burying the foreign material of the is to be in contact with the ground to perform the non-stop work, and the additional installation of the harrow part 40 at the bottom of the stop plate is embedded more deeply in the ground in the non-non-stop work to more efficiently perform the removal of foreign matter at the same time as the stop work. To this end, the harrow part 40 may be installed in a state inclined at an angle with respect to the moving direction of the rotavator at the lower rear end of the stop plate 21. In addition, the rotavator of the present invention is shown in the figure below. As described in 6, even when the harrow part 40 is separated from the stop plate 21, the stop plate 21 always maintains a state in contact with the ground, so it does not negatively affect the non-non-stop operation at all.

On the other hand, Figures 2 and 3 show an example of applying the technical idea of the present invention to a foldable clamshell rotavator as an embodiment. Of course, it can also be applied to the rotavator structure. The configuration of the harrow unit 40 and the foreign material removal means 50 will be described with reference to FIG. 4 .

4 is an enlarged view of the configuration of the harrow installed at the lower rear end of the stop plate, and the harrow unit 40 has a foreign material removal means for burying foreign substances such as straw that has risen above the ground in the non-non-stop work in the harrow 40 under the ground. this is installed

The foreign material removal means 50 is made of an elastic body in the form of a wire, and a plurality of fitting holes 43 are formed at regular intervals on the harrow plate 41 to install the foreign material removal means, and between the fitting holes 43 . A plurality of protrusions 42 for supporting the foreign material removal means 50 protrude in the vertical direction of the harrow plate 41 . These protrusions 42 preferably have an inclined structure in the form of a pyramid, which becomes higher and wider from the upper part to the lower part.

The foreign material removal means 50 has a generally ∩ shape, and both vertical portions 52 of the ∩ are fitted into the fitting holes 43 located on both sides around the protrusion 42 of the harrow plate 41, respectively. is composed The fitting of the vertical portion 52 is inserted from the lower end of the vertical portion 52 from the rear side to the front side of the rotavator, as shown in FIG. 4 , at this time the vertical portion 52 passing through the fitting hole 43 . is installed to be exposed in the rear direction of the harrow plate 41 by descending in close contact with the inclined front surface (not shown) of the harrow plate 41 as shown. To enable this installation, the foreign material removal means 50 is a form in which the middle portion 51a of the horizontal portion 51 is bent vertically upward as shown in FIG. 4, and each protrusion 42 of the harrow plate 41 ), it is preferable that the bent portion 51a (middle part) has a generally trapezoidal shape in order to be in close contact with them.

The foreign material removal means 50 configured in this way slides along the rotor bait in the stop operation by the harrow 40 and collects foreign materials such as straw exposed on the ground and burying them under the ground, in this process, the foreign material removal means 50, since the bent portion 51a of the horizontal portion 51 has a trapezoidal shape, it is in close contact with each protrusion 42 of the harrow plate 41 to maintain a stable coupling without front and back fluctuations, and through this, the burial of foreign substances The work can be done smoothly.

The harrow-integrated rotavator of the present invention further includes a harrow rotating means configured to be able to lift the harrow unit 40 upward so as not to interfere with the tillage work when not performing a stop operation.

Such a harrow rotation means will be described in detail below with reference to FIGS. 4 and 5 .

Figure 5 shows the state before the operation of the harrow rotating means provided in the harrow-integrated rotavator of the present invention, and shows a state in which the harrow is directed to the ground for non-non-stop work using the harrow.

According to the drawing, the harrow 40 is connected to the upper end 44 by the lifting cylinder 70 so as to be rotatable in the vertical direction. Elevating cylinder 70 is one element constituting the harrow rotating means, the body is installed on the upper end of the stop plate 21, one end is a pivot arm connecting the stop plate 21 and the upper end of the harrow unit (40) It is hinged on the harrow side end 72 (fastening part) of (71), and the other end 73 (hinge part) of the pivot arm 71 is rotatably hinged to the stop plate 21 . By this combined form, the harrow part 40 descends by the extension of the lifting cylinder 70 during the stop operation and maintains a state in contact with the ground (refer to FIG. 5c), and when the stop operation is not performed, the lifting cylinder 70 It maintains the lifted state by the contraction of (see FIG. 6c). In order to facilitate the lifting and lowering of the harrow part 40 by the lifting cylinder 70, the pivot arm 71 preferably has a rounded structure as shown in FIG. 4 .

As another element constituting the harrow rotating means, the present invention is a stop plate 21 in both directions of the elevating cylinder 70 to enable elevating, lowering of the harrow 40 by the operation of the elevating cylinder 70. It provides a harrow fixing device (60) configured to secure between and the harrow portion (40).

The harrow fixing device 60 is to connect the control handle 61 fitted to the plurality of support brackets 211 , 211 ′ and 212 fixed to the stop plate 21 , and the stop plate 21 and the harrow unit 40 . It includes a plurality of locking levers (45a, 45b) caught on the control handle (61).

The control handle 61 is made of two rods of different lengths having a U-shaped handle, and has a shape in which one rod 61a extends longer than the other rod 61b. The long rod 61a is supported by being inserted into at least three support brackets 211, 211' and 212 fixed to the stop plate 21, and the short rod 61b is the most of the support brackets through which the long rod passes. It is fitted in the first bracket 212 located in front. The first bracket 212 has a hole 212a through which the end of the short rod 61b passes, and the end of the short rod 61b is caught so that the long rod 61a is pulled backwards. It is provided with another hole (212b; hereinafter referred to as a 'mounting hole') to be mounted.

The locking levers 45a and 45b are a ring-shaped locking lever through which the long rod 61a of the control handle 61 passes in the vicinity of the third bracket 211 located at the far end of the support brackets through which the long rod 61a passes. (45a; hereinafter referred to as a 'hook lever') is provided, and in the vicinity of the second bracket 211' between the first bracket 212 and the third bracket 211, on the long rod 61a of the control handle 61. A hook-type locking lever 45b (hereinafter referred to as a 'hook lever') to be mounted is provided.

Preferably, the steering handle 61 is supported between the first bracket 211 and the second bracket 211' with a coil spring s wound on the surface of the long rod 61a, whereby the steering handle (61) can rotate the short rod (61b) about the long rod (61a) by pulling the handle. When the handle of the control handle 61 is pulled, the coil spring (s) is compressed, and when the handle is released after rotating the single rod (61b), the coil spring (s) is restored to its original state.

According to the present invention, when pulling the handle of the control handle 61 to rotate the short rod 61b, the long rod 61a of the control handle 61 is pulled out of the third bracket 211 and the ring lever 45a. It is configured to depart from me. In addition, in this case, the short rod 61b of the control handle 61 comes out of the through hole 212a and is caught by the long rod 61a surface in a state of being caught in the mounting hole 212b so as to be supported by the coil spring s. do.

According to Figures 5a to 5c, the harrow-integrated rotavator of the present invention is the harrow portion 40 as the lifting cylinder 70 extends and the pivot arm 71 rotates downward during a stop operation through the harrow portion 40. It descends and maintains a state in contact with the ground (see FIG. 5c), and the harrow fixing device 60 has the long rod 61a of the adjustment handle 61 first, second and third brackets 211, 211') The hook lever 45b is mounted through the 212 and the ring lever 45a, and the short rod 61b of the adjustment handle 61 is inserted into the through hole 212a, the long rod 61a of the adjustment handle 61). It is caught in and maintains the mounted state (refer to FIG. 5b). Accordingly, the harrow unit 40 is able to stably perform a stop operation in a state fixed to the lower end of the stop plate (21).

Figure 6 shows a state after the operation of the harrow rotating means provided in the harrow integrated rotavator of the present invention, shows an operating state for lifting the harrow up when not performing a stop operation.

According to Figure 6a to 6c, the harrow-integrated rotavator of the present invention, when not doing a stop operation through the harrow part 40, first, the hook lever 45b of the harrow fixing device 60, the long rod of the control handle 61 Release the lock from (61a), pull the handle of the control handle 61 so that the long rod 61a of the control handle comes out of the third bracket 211 and the hook lever 45a, and at the same time, the control handle 61 ) to escape from the end rod 61b from the through hole 212a. In this state, the short rod 61b of the control handle 61 is rotated about the long rod 61a of the control handle 61 as an axis, and the short rod 61b is held by the coil spring s on the surface of the long rod 61a. is caught in the mounting hole 212b to maintain the mounted state (see FIGS. 6a to 6b). For this purpose, it is preferable that the mounting hole 212b has a smaller diameter than the through hole 212a so that the end rod 61b of the control handle 61 does not pass and only maintains the mounted state.

Accordingly, the harrow part 40 is in a state in which the fixed state at the lower rear end of the stop plate 21 is released and can be rotated around the hinge part 73 of the pivot arm 71 .

In this way, when the lifting cylinder 70 is contracted as shown in FIG. 6c in this way, the harrow part 40 is spaced apart from the ground with the hinge part 73 as the axis as the pivot arm 71 rotates upward in the upward direction. to be able to maintain the lifted state.

On the other hand, in such a configuration, the harrow-integrated rotovar of the present invention is configured to be able to separate the harrow part 40 if necessary, for this purpose, the present invention is a lifting operation of the harrow fixing device 60 described in FIG. 6 . After completing the stop plate 21 and the elevating cylinder 70 and the harrow 40, respectively, by releasing the connection in the fastening portion 72 and the hinge portion 73 of the pivoting arm 71, which is connected easily It becomes possible to separate the harrow 40.

Although one embodiment of the present invention has been described above, the contents described so far are merely illustrative of some of the preferred embodiments of the present invention, and except as may appear in the appended claims below, the above Not limited by content. Accordingly, the present invention understands that many changes, modifications and substitutions of equivalents can be made within the scope set forth in the following claims by those skilled in the art without departing from the spirit and spirit of the invention. will have to

10 : Top Master
20": 1st tillage department
20"' : 2nd tillage department
21: stop plate
211,211',212: support bracket
212a: through hole
212b: mounting hole
24: cylinder arm
40: harrow
41: harrow board
43: fitting hole
42: turn
45a: latch lever (hook lever)
45b: latch lever (hook lever)
50: foreign material removal means
51: horizontal
51a: bend
52: vertical
60: harrow fixture
61: steering wheel
61a: Jangbong
61b: single rod
70: elevating cylinder
71: Hoedongam
72: fastening part
73: hinge
s : coil spring

Claims (5)

As a harrow-integrated rotavator in which a harrow part for grading work is integrally coupled to the lower end of the stop plate,
The harrow unit includes a harrow rotation means for lifting the harrow plate upwards when not performing a stop operation,
The harrow rotation means,
a pivot arm connecting the stop plate and the upper end of the harrow;
An elevating cylinder which is telescopically installed on the upper end of the stop plate and has one end hinged to the harrow side end of the rotating arm, and
and a harrow fixing device configured to fix between the stop plate and the harrow part in both directions of the elevating cylinder,
The harrow fixing device includes a control handle fitted to a plurality of support brackets fixed to the stop plate, and a plurality of locking levers hooked to the control handle to connect the stop plate and the harrow unit. Rotorvator. The method of claim 1,
The control handle is made of two rods of different lengths having a U-shaped handle, the long rod being supported by being inserted into at least three support brackets fixed to the stop plate, and the short rod being supported by the long rod passing through. The first bracket is inserted into the first bracket positioned at the front of the support brackets, and the first bracket has a through hole, which is a hole through which the end of the short rod passes, and another one in which the end of the short rod is hung so that the long rod is pulled backwards. Harrow-integrated rotavator, characterized in that it has a mounting hole that is a hole of. 3. The method of claim 2,
The lock lever is a ring lever through which the long rod of the control handle passes near the third bracket located at the far end of the support brackets through which the long rod passes, and the long rod of the control handle near the second bracket between the first and third brackets. Including a hook lever mounted on the control handle, the control handle is held in a state in which a coil spring is wound on the surface of the long rod between the first bracket and the second bracket, and rotates the short rod about the long rod by pulling the handle of the control handle A harrow-integrated rotavator, characterized in that it is configured to be able to do it. The method of claim 1,
Further comprising a foreign material removal means for burying foreign substances including straw under the ground during the grading operation, the foreign material removal means is made of an ∩-shaped wire, the harrow plate is a plurality of vertical parts of the ∩-shaped wire are fitted Fitting holes are formed, and a plurality of projections for supporting the horizontal portion of the wire protrude between each of the fitting holes in the vertical direction of the harrow plate, and the projections are increasingly higher and wider from the top to the bottom. Harrow-integrated rotavator, characterized in that it has an inclined structure of. 5. The method of claim 4,
The horizontal part of the wire is a form in which the middle part is bent vertically upward, and the bent middle part has a trapezoidal shape so as not to be in close contact with each protrusion of the harrow plate to cause front and rear fluctuations. .

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