CN113508655B

CN113508655B - Plough device with harrow

Info

Publication number: CN113508655B
Application number: CN202110308413.6A
Authority: CN
Inventors: 朴基赫
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-24
Filing date: 2021-03-23
Publication date: 2023-06-23
Anticipated expiration: 2041-03-23
Also published as: JP2021151227A; JP7142381B2; CN113508655A; KR102196065B1

Abstract

The present utility model relates to a belt-climbing plough device, and more particularly, to a belt-climbing plough device which is installed in a plough device for ploughing a land by traction force of a tractor, breaks the ploughed land, and uniformly and flatly faces the ploughed land. To achieve the above object, a harrow-type plough device according to the present utility model comprises: a frame having a tractor coupling portion at a front portion thereof to be pulled by a tractor; a front plough part provided with a plurality of plough machines in the width direction at the front part of the frame; a rear plough portion provided with a plurality of plough machines in the width direction at the rear portion of the frame; a front rake fixed to the frame between the front and rear plow portions and rotated to crush soil plowed by the plow portions; a rear rake fixed to the frame at a rear portion of the plow and rotated to crush soil plowed by the plow.

Description

Plough device with harrow

Technical Field

The utility model relates to a plough device with a climbing function, in particular to a plough device with a climbing function, which is arranged in a plough device for ploughing land by traction force of a tractor, and is used for crushing ploughed soil and simultaneously evenly flattening the ploughed soil.

Background

In the present utility model, the conventional technique and the technique of the present utility model are described by taking a plow commonly used in a cultivator as an example, but not limited to the plow.

In general, a plowing plow is used to make ridges for planting crops by plowing with livestock such as cattle and horses or machinery.

As an example of the conventional tractor-ploughing apparatus, as shown in korean patent application No. 20-0200074 (modified ploughing for tractors) registered by the applicant, a structure is made such that a supporting body is constituted by a front frame on which a plurality of front-ploughing portions are provided and a rear frame on which a plurality of rear-ploughing portions are provided.

The plough device with the structure is used for ploughing and the harrow is used for breaking the soil blocks generated in the ploughing process.

In korean registered patent No. 10-1053758 (harrow hiller having a plow head), a plurality of rotatable ripper blades are vertically formed at a certain interval at a lower side of a main body, and fastened with a driving part of a tractor through gears to receive power so as to rotate in a horizontal direction to finely crush soil blocks.

However, the conventional rake has a gear fastening structure for transmitting power to the plurality of ripper blades, so the structure is very complicated and manufacturing costs are increased due to the complexity thereof.

In addition, such rakes may be finely divided but cannot level the crushed soil, and byproducts such as straw and roots, etc., turned out during plowing are exposed to the ground, and need to be removed separately, thus greatly reducing the working efficiency.

Prior art literature

(patent document 1) korean registered utility model patent No. 20-0200074

(improved plow for tractor)

(patent document 2) korean registered utility model patent No. 10-1053758

(harrow hiller with plow head)

Disclosure of Invention

Technical problem to be solved by the utility model

In order to solve such conventional problems, an object of the present utility model is to provide a harrow-type plough device capable of crushing soil pieces ploughed by a cultivator and pressing the ploughed by-products onto the ground while flattening the crushed soil.

Technical scheme for solving problems

In order to achieve the above object, a harrow-type plough device according to a first embodiment of the present utility model comprises:

a frame having a tractor coupling portion at a front portion thereof to be pulled by a tractor;

a front plough part provided with a plurality of plough machines in the width direction at the front part of the frame;

a rear plough portion provided with a plurality of plough machines in the width direction at the rear portion of the frame;

a front rake secured to the frame between the front and rear plow portions and rotating to crush soil plowed by the plow portions.

And, the harrow plough device includes:

a pair of front support arms, one side of which is rotatably installed at both sides of the frame, and the other side of which is installed at the outer side of the front rake through a rotation shaft;

a plough depth adjusting part fixed to the frame and fixing a rotation angle of the front support arm in a vertical direction to adjust a plough depth of the plough machine.

And, the front rake includes:

a pair of rotating plates mounted to rotate on the other sides of the pair of front support arms, respectively;

a plurality of rod-shaped connection bars, both ends of which are fixed along the outer periphery of the pair of rotation plates at a certain distance, respectively, to connect the pair of rotation plates;

and a front support part having a ring shape or a disc shape, inserted inside or outside the plurality of connection bars, and supporting the connection bars fixed to the outer or inner periphery thereof so that the connection bars are not bent, the support part being provided with a plurality of connection bars at a certain interval.

The plow depth adjusting part includes:

a support piece provided in an axial direction of the frame and having a plurality of pin holes formed in an up-down direction,

and a fixing pin inserted into the pin hole of the support piece to fix upward and downward movements of the support arm.

And, a crushing blade mounted at regular intervals along an outer periphery of the support portion and provided to protrude in an outer side direction of the support portion, the crushing blade being detachable from the support portion, the support portion having a fixing hole formed therein, the crushing blade being fastened into the fixing hole by a bolt.

In addition, the harrow-type plough device according to the second embodiment of the present utility model is characterized by comprising:

a plough portion provided with a plurality of plough machines in the width direction at the front portion of the frame;

a rear rake fixed to the frame at the rear of the plow and rotated to crush soil plowed by the plow.

And, the rear rake includes:

a support frame elongated in a width direction of the frame;

a rear support arm connecting the frame and the support frame;

a pair of rotating plates mounted to rotate in a traction direction of the frame at both ends of the supporting frame, respectively;

and a supporting part having a ring shape or a disc shape, inserted inside or outside the plurality of connection bars, and supporting the connection bars fixed to the outer or inner periphery thereof so that the connection bars are not bent, the supporting part being provided with a plurality of connection bars at a certain interval.

In addition, the harrow-type plough device according to the third embodiment of the present utility model is characterized by comprising:

a front rake fixed to the frame between the front and rear plow portions and rotated to crush soil plowed by the plow portions;

And, a sprocket or a pulley is provided on the rotation shafts of the front and rear rakes, respectively, and a chain or a belt is connected between the sprocket or the pulley to transmit a rotation force.

And, a hydraulic motor is installed on the rotation shafts of the front rake and the rear rake to apply a rotation force.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present utility model constructed as described above, the front rake is mounted between the front and rear plough parts mounted on the frame, and the soil ploughed from the front plough part is crushed for the first time, thereby solving the problem that the soil ploughed from the front plough part is piled up between the rear plough parts.

In addition, the plough depth of the front plough part can be adjusted by adjusting the height of the front harrow, so that the efficiency of the plough operation is improved.

Further, by a plurality of rotary connecting rods and crushing blades fixed at both ends to a pair of rotary plates, the ground is flattened by the rotation of the connecting rods while the earth pieces ploughed out are finely crushed, and by-products such as straw or roots are buried in the ground, so that it is unnecessary to have a separate working machine for flattening the ground.

Therefore, since the operations of plowing, crushing and leveling can be performed simultaneously, not only the workability is very good, but also a very simple structure is provided and a separate working machine is not required, so that the effect of reducing the cost can be obtained at the same time.

Drawings

Fig. 1 is a structural view showing a plow device with rake according to the present utility model.

Fig. 2 is a block diagram illustrating a rake suitable for use in the present utility model.

Fig. 3 is a structural view showing that the crushing blade is mounted on the supporting portion.

Fig. 4 is an operation diagram for explaining the adjustment of the plough depth of the front plough portion by the plough depth adjustment portion.

Fig. 5 is an operation diagram for explaining demarcation of the plow edge of the plowed land by the front rake.

Fig. 6 is a block diagram showing the front rake and the rear rake connected by a chain or belt to transmit rotational force.

Fig. 7 is a structural view showing installation of hydraulic motors in the front rake and the rear rake to apply a rotational force.

Fig. 8 and 9 are block diagrams illustrating another form of applying a rotational force to a rake.

Fig. 10-13 are photographs of the present utility model applying power to a rake.

Detailed Description

The above objects, features and advantages will be described in detail later with reference to the drawings, whereby those skilled in the art to which the present utility model pertains can easily implement the technical ideas of the present utility model.

In describing the present utility model, if it is considered that detailed description of known technology related to the present utility model may unnecessarily obscure the subject matter of the present utility model, the detailed description will be omitted.

The terms used in the present utility model select general terms that may be widely used at present in consideration of functions in the present utility model, but this may become different according to the intention or case of those skilled in the art, the appearance of new technologies, and the like.

In addition, in certain cases, there are also terms arbitrarily selected by the applicant, and in such cases, the meanings of these terms will be described in detail in the description of the corresponding utility model.

Accordingly, the terms used in the present utility model should be defined based on the meanings of the terms and the overall contents of the present utility model, not by the names of the simple terms.

Hereinafter, embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

However, the embodiments of the present utility model illustrated below may be modified in various forms, and the scope of the present utility model is not limited to the embodiments described below.

Embodiments of the present utility model are provided to more fully describe the present utility model to those of ordinary skill in the art.

The first embodiment of the present utility model is mainly composed of a frame 100, a front plow 130, a rear plow 140 and a rear rake 200.

Here, the front and

rear plough parts

130, 140 are shown as examples of a plough, which is one kind of a plough machine, and may have a form in which the rear plough part 140 is provided only in the frame 100.

The frame 100 is connected to the rear of the tractor and is towed, three-point

tractor connection parts

110 and 120 are provided in the up-down direction in front of the frame 100, a front plow 130 is installed in the front of the frame 100, the front plow 130 is spaced apart by a plurality of plows and is fixed in the width direction of the frame 100, and a rear plow 140 is also installed in the rear of the frame 100, the rear plow 140 is spaced apart by a plurality of plows and is fixed in the width direction of the frame 100.

Of these front and

rear plough parts

130 and 140, only one plough part (130 or 140) may be mounted on the frame 100, or both

plough parts

130 and 140 may be mounted respectively at the front and rear of the frame 100.

A rear rake 200 is provided at the rear of the rear plow 140, one side of the rear rake 200 is rotatably mounted on the frame 100 by a hinge 171, and the other side is configured to be rotated in an up-down direction by a cylinder 170 so as to be capable of being lifted up or lowered down from the ground, the cylinder 170 being rotatably mounted on a support frame 210 by a hinge 220.

In addition, a pair of

rear support arms

150 and 160 are provided at both sides of the air cylinder 170 so that the rear rake 200 is stably supported by the frame 100 and can be rotated in the up-down direction by the air cylinder 170, one side of the

rear support arms

150 and 160 is mounted on the frame 100 to be rotatable in the up-down direction, and the other side is fixed to the rear rake 200.

As shown in fig. 2, the rear rake 200 is constructed in a tub-like shape rotated and rolled in a traction direction of a tractor by a pair of

rear support arms

150 and 160, an elongated support frame 210 is provided in a width direction of the frame 100, the other side of the cylinder 170 is installed at the center of the support frame 210, and the other sides of the

rear support arms

150 and 160 are fixed to both sides thereof.

The support frame 210 is extended downward at both ends thereof, and at the extended portions, disk-shaped

rotation plates

230 and 240 are respectively mounted by

rotation shafts

231 and 241 to rotate in the traction direction of the tractor, and a plurality of connection rods 250 are positioned between the pair of

rotation plates

230 and 240 to connect the

rotation plates

230 and 240 to each other.

That is, both ends of the plurality of rod-shaped connection bars 250 are fixed at intervals along the outer circumferences of the

rotation plates

230 and 240 to be connected to the

rotation plates

230 and 240 spaced apart from each other at both ends of the support frame 210, so that a rolling motion can be performed by the traction of the tractor.

At this time, it is preferable that both ends of the plurality of connection bars 250 are not horizontally fixed at the same position of the

rotation plates

230 and 240, but are connected to be slightly inclined downward while being directed from one side toward the other side.

This is to effectively break up the soil pieces plowed by the front and

rear plow sections

130 and 140 and effectively embed byproducts such as straw and roots into the ground.

That is, one connecting rod 250 is continuously contacted with the ground from side to side at time intervals, so that the crushing operation can be performed while minimizing resistance of soil blocks or byproducts.

In addition, since the connection bars 250 are long bar-shaped, they may be bent due to resistance such as soil blocks or roots, and in order to prevent bending while stably maintaining the interval of the plurality of connection bars 250, a plurality of support parts 260 are provided at regular intervals.

The support part 260 is ring-shaped, and may be inserted into the inside of the plurality of connection bars 250 such that the connection bars 250 are fixed to the outside of the support part 260, or the connection bars 250 may be inserted into the inside of the support part 260 such that the connection bars 250 are fixed to the inside of the support part 260.

In the drawings, although a structure in which the ring-shaped supporting portion 260 is inserted into the inside of the connection rod 250 such that the plurality of connection rods 250 are fixed to the outside of the supporting portion 260 is illustrated, the supporting portion 260 may have a disk shape, and when inserted into the outside of the connection rod 250, the supporting portion 260 has a ring shape.

As shown in fig. 3, the support portion 260 has a circular ring shape, and a connection rod assembly groove 261 is formed at a predetermined interval on the outer side thereof, the connection rod assembly groove 261 is used for inserting and fixing the connection rod 250 such that the connection rod 250 is in contact with the outer side of the support portion 260 and is fixed, and the connection rod 250 is fixed by welding or the like after being inserted into the connection rod assembly groove 261.

Of course, the support portion 260 may have a disk shape as described above.

In addition, the crushing blades 270 are fixed to the supporting part 260 at a certain interval, and the crushing blades 270 are detachably fixed and installed between the connecting rod assembly grooves 261 and installed to protrude to the outside direction of the supporting part 260.

Thus, the crushing blade 270 is mounted at a position not interfered by the connection bars 250, i.e., is fixedly mounted to protrude outward by the interval between the connection bars 250, so that the soil mass plowed by the

plow parts

130 and 140 can be finely crushed.

That is, although the soil blocks may be crushed by the rotation of the connection rod 250, the soil blocks are more finely crushed by the crushing blades 270, so that the levelling work can be more effectively performed.

A fixing hole 262 for mounting and dismounting the crushing blade 270 is formed between each of the connecting rod assembly grooves 261, and a bolt hole 271 is formed at a lower portion of the crushing blade 270, so that a structure in which a bolt 272 is inserted through the bolt hole 271 and the fixing hole 262 and fastened by a nut 273 may be provided.

Of course, the detachable structure of the crushing blade 270 may be implemented in various manners, and the structure of the crushing blade 270 may also have various shapes for crushing the soil blocks.

The operation state according to the first embodiment of the present utility model will be described.

During movement, the air cylinder 170 is compressed so that the rear rake 200 can be moved in a lifted condition, and in a plow field, the air cylinder 170 is extended to lower the rear rake 200 and contact the ground.

At this time, when the cylinder 170 is further extended in a state where the rear rake 200 is in contact with the ground, the rear rake 200 is supported on the ground so that the rear portion of the frame 100 is lifted, and thus the front plow 130 and the rear plow 140 are also lifted, and the plow depth, that is, the plow depth becomes shallow.

In contrast, when the cylinder 170 is extended in a state where the rear rake 200 is close to the ground, the self weight of the frame 100, the front plow 130 and the rear plow 140 digs deeper into the ground in a state where the rear rake 200 is not supported on the ground, and thus the plow depth becomes deeper.

Of course, when the front and

rear plow portions

130 and 140 dig into the ground and the frame 100 descends, the rear rake 200 naturally contacts the ground and is supported without extending the cylinder 170, by which the plow depth is fixed at this position.

As a result, the plough depth of the front and

rear plough parts

130, 140 can be adjusted by adjusting the height of the rear rake 200 according to the extension length of the cylinder 170.

Thereafter, when the tractor advances and pulls the frame 100, the front and

rear plough parts

130 and 140 excavate the ground according to the set plough depth to plough, and the rear rake 200 rolls in the pulling direction by the pulling force, and the connecting rod 250 and the breaking blade 270 finely break the soil pieces ploughed by the

plough parts

130 and 140 to perform the leveling work.

In addition, byproducts such as straw and roots are buried in the ground by the rotation of the connection rod 250.

Therefore, the land leveling work is very easily performed by the rotation of the connection rod 250.

In the second embodiment of the present utility model, a front rake 300 is provided between the front plow 130 and the rear plow 140, and the structure of the front rake 300 is the same as that of the rear rake 200 of the first embodiment of the present utility model.

However, with a different supporting structure, the front rake 300 is supported by the frame 100 through the plough depth adjustment parts 310 and 310', and the height of the front rake 300 is adjusted by the plough depth adjustment parts 310 and 310', so that the plough depths of the front plough part 130 and the rear plough part 140 can be adjusted.

That is, the rear portion of the frame 100 is rotated in the up-down direction about the three-point

tractor connection portions

110 and 120 connected to the tractor to adjust the depths of the front and

rear plough portions

130 and 140, but in the case of adjusting the plough depth of the rear plough portion 140, since the plough depth of the front plough portion 130 is set to be shallower than the plough depth of the rear plough portion 140, the plough depth of the front plough portion 130 cannot be adjusted to the required plough depth.

Accordingly, by adjusting the height of the front rake 300, the height of the front portion of the frame 100 is adjusted to adjust the plow depth of the front plow 130.

To this end, the front rake 300 is fixed to the front of the frame 100 by the plow depth adjusting parts 310 and 310', and the extension frames 101 and 101' extend further outwardly from both sides of the front of the frame 100. These extension frames 101 and 101' are provided to protrude further outward than the front tilling portion 130.

Each of the extension frames 101 and 101' is provided with a plow depth adjustment portion 310 and 310', and since both sides of the plow depth adjustment portion 310 and 310' have the same shape, the structure thereof will be described centering on one plow depth adjustment portion 310.

In the plow depth adjusting part 310, a pair of supporting

pieces

311 and 312 are fixed to the rear of the extension frame 101 at a distance from each other, and a plurality of pin holes 313 and 314 are formed at the same positions of the supporting

pieces

311 and 312.

These pin holes 313 and 314 are formed in the up-down direction, preferably, to follow the rotational path of the front support arm 320.

The rear portion of the front support arm 320 is bent obliquely downward such that the rear portion of the support arm 320 faces the front rake 300, and the front portion of the support arm 320 is mounted to rotate in the up-down direction between the pair of

support pieces

311 and 312 via the shaft portion 315.

In addition, fixing

pins

316 and 317 are inserted into the pin holes 313 and 314 to fix the rotation of the front support arm 320 in the upper and lower directions, and two fixing

pins

316 and 317 are inserted into the pin holes 313 and 314 at the upper and lower sides of the front support arm 320, respectively, so that the front support arm 320 is caught by the fixing

pins

316 and 317 and is fixed not to rotate.

That is, the fixing pins 316 and 317 serve as stoppers to prevent the front support arm 320 from rotating.

The plurality of pin holes 313 and 314 are formed within the range of the maximum rotation angle of the front support arm 320, and the heights of the lower ends of the uppermost pin holes 313 and 314 are identical to the heights of the upper ends of the front support arm 320 when the front support arm 320 is maximally rotated upward, and the heights of the upper ends of the lowermost pin holes 313 and 314 should be identical to the heights of the lower ends of the front support arm 320 when the front support arm 320 is maximally rotated downward.

In addition, the interval between the respective pin holes 313 and 314 corresponds to the thickness of the front support arm 320.

Both sides of the front rake 300 are mounted on the front support arm 320 through a rotation shaft 321 to rotate.

Accordingly, as shown in fig. 4, when the front support arm 320 is fixed by adjusting the inclination angle through the pin holes 313 and 314 and the fixing pins 316 and 317, the front rake 300 is grounded to the ground G to be supported, and the degree of lifting of the frame 100 is adjusted by the grounded supporting force, thus finally adjusting the depth of the front plow portion 130 digging into the ground, i.e., the plow depth.

That is, if the depth of the plow is to be made shallow, the front rake 300 is pushed up against the frame 100 by increasing the inclination angle of the front support arm 320, thereby increasing the distance between the frame 100 and the ground G, and the depth of the plow of the front plow 130 is adjusted to be shallow, whereas if the depth of the plow is to be made deep, the angle of the front support arm 320 is made gentle, thereby decreasing the distance between the frame 100 and the ground G, thereby adjusting the front plow 130 to dig deep into the ground.

As another form of such a plow depth adjustment member 310, there may be a structure in which a pin hole is formed in the front support arm 320, and a fixing pin is passed through the pin holes 313 and 314 and the pin hole formed in the front support arm 320 and is fixed to fix the rotation of the front support arm 320.

In addition, if the front rake 300 is located between the front plough part 130 and the rear plough part 140 to crush and transfer the soil ploughed by the front plough part 130 to the rear, and if the front rake 300 is not provided, only the plough having the front plough part 130 and the rear plough part 140 is provided, the soil mass ploughed by the front plough part 130 is caught by the rear plough part 140 and cannot be smoothly discharged to the rear, and thus a phenomenon of soil mass accumulation occurs.

In particular, in the cultivated land such as clay, a lot of accumulation phenomenon occurs between the front cultivated plow 130 and the rear cultivated plow 140 due to such soil blocks, resulting in difficulty in performing work.

Therefore, the front rake 300 of the present utility model finely crushes the soil mass plowed by the front plow 130, and can easily discharge the soil mass rearward by the rear plow 140, thereby reducing the phenomenon of soil mass accumulation.

On the other hand, in the case of a cultivated land of a clay type, when the post-cultivated land portion 140 is cultivated, the soil on the outer side of the part to be cultivated is also cultivated in a block shape, and therefore the edge portion of the cultivated land is not cultivated in order.

Accordingly, when the front rake 300 is pulled, the rotation plate 322 digs into the cultivated land and cuts the ground straight, so that the rear cultivated plow 140 following it plows only in the cutting range, whereby the edge of the cultivated land can be made clean.

For this reason, as shown in fig. 5, the distance between the outer peripheral surface of the rotation plate 322 of the front rake 300 and the connection bar 350 is set to have a distance D corresponding to the cutting depth of the cultivated land, so that the cultivated land is cut while the rotation plate 322 is rotated.

As the third embodiment of the present utility model, there may be a structure in which the front rake 300 is provided between the front plow 130 and the rear plow 140, and the rear rake 200 is provided at the rear of the rear plow 140.

The front rake 300 and the rear rake 200 have the same structure as described above.

Accordingly, the front rake 300 breaks up the soil mass plowed by the front plow 130 for the first time to eliminate the accumulation phenomenon, and finely breaks up the soil for the second time by the rear rake 200, thereby performing the leveling operation together.

Meanwhile, as shown in fig. 6, there may be a structure in which the front rake 300 and the rear rake 200 may be coupled to each other by a chain 400 or a belt to transmit rotational force, and a sprocket 370 or a pulley is coupled to the rotation shaft 321 of the front rake 300 and the rotation shaft 231 of the rear rake 200, respectively, and the sprocket 370 or the pulley is coupled to the chain 400 or the belt to transmit rotational force, i.e., driving force, to each other.

That is, when the rotational force of one of the rakes is lowered due to the obstacle, the other rake transmits and supplements the rotational force, so that it is possible to smoothly crush and pull.

In addition, the gear ratios of the

sprockets

370 and 280 or the pulleys may be different, and in order to make the front rake 300 finely crushed by the rapid rotation and make the rear rake 200 perform the crushing and leveling work, it is preferable to make the rotation of the rear rake 200 slower than the rotation of the front rake 300, and thus, the gear ratios may be set by the different diameters of the

sprockets

370 and 280 or the pulleys.

As shown in fig. 7, a first hydraulic motor 371 is fixed to the front support arm 320 of the front rake 300 to be axially coupled with the rotation shaft 321, and a second hydraulic motor 281 is fixed to the support frame 210 of the rear rake 200 to be axially coupled with the rotation shaft 231, and a rotation force is applied to the front rake 300 and the rear rake 200 by hydraulic pressure applied from a tractor.

At this time, there is a structure in which the first hydraulic motor 371 receives the hydraulic pressure supplied from the tractor through the first hydraulic line 410 to rotate the rotation shaft 321, the discharged hydraulic pressure is supplied to the second hydraulic motor 281 again through the second hydraulic line 420 to rotate the rotation shaft 231, and the discharged hydraulic pressure is returned to the tractor through the third hydraulic line 430.

Fig. 8 and 9 are structural diagrams showing a structure for applying rotational power generated by a tractor to the front rake 300, a power combining part 500 is installed at the front of the frame 100, and the power combining part 500 is installed at a power shaft of the tractor, i.e., in a position directly connected to a rotary joint.

That is, since a power shaft for transmitting the rotational force generated from the tractor to the outside is generally located at the rear center portion of the tractor, it is preferable that the power combining portion 500 is also located at the front center portion of the frame 100 corresponding thereto.

Accordingly, the connection shaft 530 provided in the power combining portion 500 is directly connected to the power shaft of the tractor.

In the power coupling part 500, a bracket-shaped housing 510 is fixed to a lower side of a front center portion of the frame 100, a fixed bearing 520 is mounted inside the housing 510, and the connection shaft 530 is mounted through the fixed bearing 520 in a front-rear direction, so that a front-rear portion of the connection shaft 530 protrudes in the front-rear direction of the housing 510.

Accordingly, the connection shaft 530 protruding to the rear of the housing 510 is connected to the front of the power transmission shaft 600 by a universal joint, the power transmission shaft 600 is installed toward the rear, and the rear of the power transmission shaft 600 is also connected to the power connection shaft 720 of the gear case 700 by a universal joint.

The front rake 300 is separated into a left rake 301 and a right rake 302, the outer portions of which are respectively mounted on the frame 100, the left rake 301 and the right rake 302 are mounted on the rotating shafts 321 and 321' through the supporting arms 320 connected to the frame 100, and the inner portions of which are respectively coupled to the

power shafts

730 and 731 provided at both sides of the gear case 700.

The front portion of the gear case 700 is provided with a power connection shaft 720, and the power connection shaft 720 is connected to the power transmission shaft 600 through a universal joint and converts power received through the power connection shaft 720 into an axial direction, thereby supplying rotational force to the

power shafts

730 and 731.

Thus, left rake 301 and right rake 302 are mounted on the

power shafts

730 and 731 for rotation.

The gear case 700 may be fixed to the frame 100 or a fixed structure connected to the frame 100 by a fixing portion 710 in the form of a supporting arm, and is preferably installed to be inclined upward toward the front so as to be positioned in line with the power transmission shaft 600 in order to improve power transmission efficiency with the power transmission shaft 600.

That is, since the gear box 700 is located at a position lower than the power shaft of the tractor, the power connection shaft 720 of the gear box 700 is provided to face the connection shaft 530 of the power coupling portion 500, and the power transmission efficiency can be greatly improved by one-time angular conversion from the power shaft of the tractor to the power connection shaft 720 of the gear box 700.

For one angular transformation, the gear box 700 is located at a central portion of the rake 300, and from the central portion, the left rake 301 and the right rake 302 are separately installed in the left-right direction.

Of course, if the location of the gearbox 700 is at the same elevation and location as the power shaft of the tractor, the power shaft is directly connected to the power connection shaft 720 of the gearbox 700 so that power from the tractor can be transferred to the gearbox 700.

In addition, it is also possible to have a structure in which the power combining part 500 is removed and the power transmission shaft 600 is directly connected between the power shaft 720 of the tractor and the gear box 700 to transmit power.

On the other hand, as shown in the photographs of fig. 10 to 13, the left rake 301 and the right rake 302 may have a structure in which cylindrical bodies thereof are mounted between the support arm 320 and the gear case 700, and the crushing blades 270 are mounted along the periphery at equal intervals in the length direction.

As described above, the specific portions of the present utility model have been described in detail, and it is apparent to those skilled in the art that the detailed description is merely a preferred embodiment, and the scope of the present utility model is not limited thereto.

Therefore, it is intended that the substantial scope of the utility model be defined by the appended claims and equivalents thereof.

Description of the reference numerals

100: frames 110,120: tractor connecting part

130: front plow 140: rear plough part

150,160: rear support arm 170: cylinder

200: rear rake 210: supporting frame

220: hinge portions 230,240: rotary plate

231,241: rotation shaft 250: connecting rod

260: support 261: connecting rod assembly groove

262: fixing hole 270: crushing blade

271: bolt hole 272: bolt

273: nut 280: sprocket wheel

281: hydraulic motor 300: front harrow

310: plow depth adjustment portions 311,312: supporting sheet

313,314: pin hole 315: shaft portion

316,317: a fixing pin 320: front support arm

321: a rotation shaft 350: connecting rod

370: sprocket 371: hydraulic motor

400: chain 500: power combining part

510: housing 520: fixed bearing

530: the connecting shaft 600: power transmission shaft

700: gear box 710: fixing part

720: power connection shafts 730,731: a power shaft.

Claims

1. A plow assembly having a rake, comprising:

a frame, the front of which is provided with a tractor connecting part to be pulled by a tractor, and is provided with a power combining part directly connected with a power shaft of the tractor;

a plough portion provided with a plurality of plough machines in the width direction of the frame;

a rake located at a rear portion of the plough part to crush soil ploughed by the plough part;

a gear box at a lower portion of the frame, connected to a shaft of the rake, connected to the shaft of the rake, to transmit power;

the front part of the power transmission shaft is connected with the connecting shaft of the power combining part through a universal joint, the rear part of the power transmission shaft is connected with the power connecting shaft of the gear box through the universal joint to transmit power,

in the power combining part, a housing is fixed at a lower side of a front central part of the frame, the connecting shaft penetrates through a fixed bearing in a front-rear direction, so that front-rear parts of the connecting shaft protrude in the front-rear direction of the housing,

the gear box is arranged in such a way that the power connecting shaft is opposite to the connecting shaft of the power combining part, and the gear box is obliquely arranged forwards and upwards so as to be positioned on the same straight line with the power transmission shaft,

the rake has a cylindrical body to be separated into left and right rakes, which are positioned in a straight line in a lateral direction, and the outer portions of which are respectively mounted on the frame with a pair of support arms as media, and on both sides of the frame, one side of the support arms is axially rotatable, and the other side is axially rotatable on the outer sides of the left and right rakes, and simultaneously, the gear case is interposed between the separated left and right rakes, and a power shaft of the gear case is connected to the rotation shafts of the left and right rakes, and crushing blades are disposed at equal intervals along the length direction and the outer circumference of the body.