KR100575491B1 - Apparatus for weeding by using cars - Google Patents

Abstract

The present invention relates to a weeding device for a work vehicle, which is connected to the rear end of the work vehicle and the vertical bar (11, 12) and the vertical bar (13, 13) for connecting both ends of the upper, lower horizontal bar (11, 12) And a support frame (10) consisting of shaft support bars (12b) arranged side by side at the top and bottom of the horizontal bar (12); According to the expansion and contraction of the left and right pivot cylinder 50 coupled to the entire horizontal bar 12 of the support frame 10 by tensioning the wires 60 fixed to both wall surfaces 21 of the cutter unit 20 A hinge coupling part 70 whose one end is hinged to the axial support bar 12b of the support frame 10 so as to rotate left and right with respect to the center of the frame 10; And up and down based on the hinge coupler 70 according to the expansion and contraction of the up and down pivot cylinder 40 connected between the upper horizontal bar 11 of the support frame 10 and the cylinder support 21a on the upper surface of the wall 21. One end thereof is rotatably coupled to the hinge coupling portion 70, and the other side wall surface 21 includes a cutter portion 20 in which a plurality of cutter shafts 23 having cutters 22 are fixed. . Therefore, the cutter portion can be tilted at an angle to reduce the herbicidal resistance and at the same time, the cut long weeds are pushed outwards in the traveling direction and laid down so that they do not accumulate in the front of the traveling direction, and the weeding operation is facilitated. The cutter can cut a large area at the same time, so weeding ability is excellent, and the cutter is not hit by the projected ground, and is not damaged. Also, the cutter can be pushed to the edges of structures and trees. The narrower radius of rotation of the work vehicle is reduced, so that weeding can be performed smoothly.

Weeding device for working vehicle, support frame, cutter part, drive shaft, auxiliary wheel

Description

Apparatus for working vehicles {Apparatus for weeding by using cars}

1 is a perspective view showing a weeding device for a working vehicle according to the present invention.

2 is a perspective view showing a main part of the weeding device for the working vehicle according to the present invention.

3 is a plan view showing a weaving device for a work vehicle according to the present invention, Figures 4 and 5 are schematic views showing a state in which the cutter portion of Figure 3 is rotated left and right.

FIG. 6 is a side view illustrating main parts of a weeding device for a work vehicle according to the present invention, and FIG. 7 is a schematic view showing a state in which the cutter portion of FIG.

8 is an enlarged view illustrating main parts of a leaf spring of a work vehicle weeding device according to an exemplary embodiment of the present invention.

** Description of the symbols for the main parts of the drawings **

8: drive shaft 9: bevel gear

10: support frame 11: upper horizontal bar

12: lower side bar 12a: support bracket

12b: shaft support bar 13: vertical bar

14: auxiliary wheel 15: guide roller

16: shock-proof spring 17: slide plate

18: leaf spring 19: rail

20: cutter portion 21: wall surface

21a: cylinder support 22: cutter

22a: main cutter 22b: auxiliary cutter

23: cutter axis 23a: long axis

23b: shortening 24: support

25: cutter protection plate 25a: bending surface

26: holder cover 30: gearbox

32: driven rotary shaft 34: hinge pin

40: up and down rotating cylinder 42: cylinder rod

50: left and right pivot cylinder 51: cylinder rod

54: Slider 54a: Connecting Piece

60: wire 70: hinge coupling portion

71: rotating shaft 72: left and right rotating plate

73: hinge pin 80: belt

90: guide rail 92: guide bar

94: lifting cylinder rod 96: lifting cylinder

The present invention relates to a weeding device which is a kind of work machine for detaching and attaching to a work vehicle such as a tractor, and more particularly, by allowing a cutter part equipped with a plurality of cutters connected to a support frame to be freely rotated from side to side during weeding operation, The cutter can be inclined at a certain angle with respect to the traveling direction of the work vehicle to reduce the weeding resistance, and the cut long weeds are also pushed out of the traveling direction to lie down so that they do not accumulate in the front of the traveling direction, so that weeding is easy. The cutter can cut a large area at the same time with a plurality of cutters at the same time, so weeding ability is excellent, and the cutter can be pushed to the edges of structures, trees, and the like. It is not damaged by being hit and does not depend on the size of the weed The present invention relates to a weeding device for a work vehicle that has a large degree of freedom of work up to a long weed and a narrow support frame, so that the radius of rotation of the work vehicle is reduced so that weeding can be performed smoothly even in a narrow space.

In general, the weeding device for the work vehicle has a structure in which the cutter is installed in the longitudinal direction at the rear end of the work vehicle, and the weeding work is performed at the rear of the traveling direction of the work vehicle by rotating the cutter by power take-off to the work vehicle.

In the prior art, the weeding device for the work vehicle performs a weeding operation while the cutter moves along the traveling direction of the work vehicle, so that weeds lie down due to the wheel marks of the preceding work vehicle, thereby reducing the cutting effect and arranging the cutting cutter in the longitudinal direction. As weeds in the direction of weeding are narrowed, the number of reciprocating movements of the work vehicle increases, so that weeding efficiency decreases, and weeding itself is not possible for the so-called square areas where structures or fruit trees stand. The range of weeding work is limited and weeding work is not done smoothly, and since there is no countermeasure against the protrusion of the ground, there is a possibility that the cutter may be damaged by hitting the protrusion of the ground. It had problems such as falling.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and when the weeding operation, by allowing the cutter portion equipped with a plurality of cutters connected to the support frame to be rotated freely from side to side, the cutter portion is inclined at an angle with respect to the traveling direction of the work vehicle. Not only does it reduce the herbicidal resistance, but also the long cut weeds are pushed outwards in the direction of progression, so that they do not accumulate in the front of the direction of progression, so that weeding is facilitated, and a large area can be cut simultaneously by a plurality of cutters in the cutter section. Excellent weeding ability, and also allows the cutter to enter the corners of structures and trees, etc. Also, by moving the cutter up and down, the cutter does not hit the projected ground and is not damaged, regardless of the size of the weeds. Have a lot of freedom to work from short to long weeds To provide a work vehicle weeding apparatus is less turning radius of the work vehicle narrowing of the width of the jiteul to occur to the weeding smoothly even in a narrow space, it is an object.

As such, the work vehicle weeding device of the present invention for achieving the above object is connected to the rear end of the work vehicle and parallel to the upper and lower parts of the vertical bar and the lower horizontal bar connecting the upper and lower horizontal bars and these upper and lower ends of the horizontal bar. A support frame consisting of axial support bars disposed; According to the expansion and contraction of the left and right pivot cylinder coupled to the entire horizontal bar of the support frame to tension the wires fixed to both walls of the cutter portion, one end is hinged to the shaft support bar of the support frame to rotate left and right relative to the center of the support frame Combined hinge couplers; And one end coupled to the hinge coupling part so as to be rotatable up and down based on the hinge coupling part according to the expansion and contraction of the up and down pivot cylinder connected between the upper horizontal bar of the support frame and the cylinder support on the upper wall surface. It is comprised including the cutter part in which the some cutter shaft was condensed.

In addition, in the weaving device for a working vehicle according to the present invention, the hinge coupling portion, the upper and lower ends of the shaft shaft to the shaft support bar of the support frame is condensed; And one end is fixedly coupled to the rotating shaft, the other end is preferably made of a left and right pivot plate is coupled to one end of the cutter portion by a hinge pin to be able to rotate up and down.

Further, in the weaving device for a work vehicle according to the present invention, the hinge is coupled to the upper end of the wall portion of the cutter toward the support frame, and is provided with a driven rotary shaft for receiving power from the drive shaft of the work vehicle and transmitting rotational force to the cutter shaft through the belt. It is preferred that the gearbox is further provided.

In addition, in the weaving device for a work vehicle according to the present invention, the left and right pivot cylinder is provided with a slider sliding on the rail coupled to the entire horizontal bar of the support frame, the cylinder rod is coupled to the slider, the slider and the cutter It is preferable that the slider is fixed to each of the wires so that the slider is moved left and right when the cylinder rod is expanded and contracted to tension the wire on either side so that the cutter unit is rotated about the rotating shaft.

In addition, in the weaving apparatus for a work vehicle according to the present invention, a guide rail fixedly installed on the upper surface of the gearbox extending in the longitudinal direction and having both side walls, and one end portion along the guide rail when the cutter portion is elevated or moved left and right, It is preferable that the guide bar is further provided sliding to the rear and the other end is hinged to the upper side bar of the support frame.

In addition, in the weaving apparatus for a work vehicle according to the present invention, supports are formed at both front and rear ends of the cutter portion further extended downwardly than the cutter, and are coupled to the lower ends of the supports and disposed close to the ground in a shape covering the lower portions of the cutters. It is preferable that a cutter protection plate is provided.

In addition, in the weaving apparatus for a work vehicle according to the present invention, it is preferable that the cutter protection plate has a narrower width than the length of the cutter, and has a bent surface whose both ends are bent upward.

Further, in the work vehicle weeding device according to the present invention, it is preferable that a holder cover for covering the cutter portion is provided on both sides of the cutter portion.

Further, in the work vehicle weeding device according to the present invention, the plurality of cutter shafts fixed to the cutter portion is composed of a plurality of long shafts having a main cutter and a plurality of short shafts having an auxiliary cutter, and these long shafts and short shafts have a lengthwise direction. It is preferable to alternately arrange accordingly.

In addition, in the weaving device for a work vehicle according to the present invention, it is preferable that the auxiliary cutter of the cutter portion has a length extending so that both ends thereof are adjacent to the long axis of the neighboring main cutter.

In addition, in the weaving apparatus for a work vehicle according to the present invention, the upper and lower rotation cylinder is preferably set to the cylinder rod pressure so that the cylinder rod is immersed when the cylinder rod is protruded and extended by the weight of the cutter portion, and the cutter protection plate hit the ground. Do.

In addition, in the weaving apparatus for a work vehicle according to the present invention, a wire is fixedly attached to the center portion of the slider coupled to the cylinder rod of the left and right pivot cylinder, and the other end of the wire is fixedly attached to the upper side of both side walls of the cutter, It is preferable that the lower end of the support frame is provided with guide rollers for supporting and guiding the wires to be opened at an angle with respect to the wall surface of the cutter part.

In addition, in the weaving device for a work vehicle according to the present invention, the guide roller formed on the outside is installed on the slide plate of the lower horizontal bar so that the impact on the cutter portion is relieved when the wire is tensioned, the slide plate on the vertical bar of the support frame It is preferable that the upper end is connected to the lower end of the leaf spring fixedly fixed so as to elastically slide.

In addition, in the weaving device for a work vehicle according to the present invention, it is preferable that the lower end of the support frame is provided with an anti-collision spring that prevents the cutter portion from rotating against the front of the support frame by rotating the cutter.

In addition, in the weaving device for a work vehicle according to the present invention, it is preferable that the auxiliary wheel is provided on both sides of the front side of the lower end of the support frame to support the load of the cutter and smooth running.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 to 8, the weeding device for a work vehicle according to the present invention is connected to the rear end of the work vehicle and has upper and lower horizontal bars (11, 12) and vertical bars (13) and shaft support bars (12b) Cutter portion in which a plurality of cutter shafts 23 having cutters 22 are hinged to a support frame 10 and an axial support bar 12b of the support frame 10 and upright on one side wall 21 ( 20, a gearbox 30 which is hinged to the cutter unit 20 and is provided with a driven rotary shaft 32 which transmits a rotational force to the cutter shaft 23, and the cutter unit 20 upwards and downwards. It is configured to include a vertical rotating cylinder 40 for rotating the shaft and the left and right rotating cylinder 50 for rotating the cutter portion 20 to the left and right.

The support frame 10 is installed at the rear end of the work vehicle and the shaft support bars arranged side by side in the upper and lower horizontal bars (11, 12) and both ends of the vertical bar (13) and the lower horizontal bar (12) side by side ( 12b) having a rectangular frame shape, the cutter unit 20 is hinged through the hinge coupling unit 70 on the rear side of the lower side bar 12 on the basis of the traveling direction of the work vehicle, the upper and lower pivot cylinder 40 It is coupled to the upper horizontal bar 11, the left and right pivot cylinder 50 is coupled to the front of the lower horizontal bar (12).

In addition, an auxiliary wheel 14 for supporting the support frame 10 and supporting the load of the cutter unit 20 and smooth running is installed at the bottom of the lower horizontal bar 12 of the support frame 10.

In addition, wires 60 operated by left and right pivot cylinders 50 may form a predetermined track (in the present invention, a triangular shape) on both sides of the lower side of the horizontal bar 12 of the support frame 10. A plurality of guide rollers 15 to be supported so as to be installed, and the cutter portion 20 rotated to the left and right on both sides of the front side of the lower side horizontal bar 12, which is adjacent to the front side of the support frame 10, to prevent the collision Anti-collision spring 16 is provided for.

Here, the guide roller 15 is integrally installed on the slide plate 17 so that the lower end of the support frame 10 elastically slides on the horizontal bar 12 as the wire 60 is tensioned. The slide plate 17 is connected to the leaf spring 18, the upper end of which is fixed to the vertical bar 13 of the support frame 10, and the lower end thereof is a free end.

With this configuration, when the left and right pivot cylinder 50 is operated to tension the wire 60 in a predetermined direction, the cutter portion 20 rotates in the tensioned direction of the wire 60, thereby simultaneously cutting the cutter portion 20. When the wire 60 on the other side is pulled by the cutter unit 20 and pulls the guide roller 15, the leaf spring 18 is applied to the guide roller 15 while allowing the leaf spring 18 to elastically slide a certain distance. It will reduce the load and at the same time smooth rotation of the cutter unit 20 is possible.

The cutter unit 20 is hinged to one end of the support frame 10 through the hinge coupling portion 70 so that the support frame 10 can be rotated left and right and up and down with the shaft, and is grounded on an upright one side wall 21. A rectangular plate shape in which a plurality of cutter shafts 23 having cutters 22 arranged in parallel with a predetermined height spaced apart from each other are constricted, and the hinge coupling state of the support frame 10 and the cutter unit 20 will be described in more detail. When the support frame 10 and the cutter portion 20 is provided between the hinge coupling portion 70, one end of the hinge coupling portion 70 can rotate left and right with respect to the support frame 10. The hinge is coupled, and the cutter 20 is hinged to the other end of the hinge coupling portion 70 so as to be rotated up and down.

Here, the structure of the hinge coupling portion 70 is provided on the shaft support bar 12b of the support frame 10, the upper and lower ends of the rotary shaft 71 is condensed, the left and right pivot plate 72 on the rotary shaft 71 ) Is fixedly coupled, and one end of the cutter portion 20 is hinged to the left and right pivoting plate 72 so as to be pivotable up and down by a hinge pin 73.

In addition, a plurality of cutter shafts 23 are compressed on one side of the cutter unit 20 at regular intervals, and the plurality of cutter shafts 23 may have a plurality of long shafts having a main cutter 22a. It consists of several single axis | shaft 23b which has 23a) and the auxiliary cutter 22b, and these long axis | shafts 23a and 23b are alternately arrange | positioned along the longitudinal direction. That is, the main cutter 22a which has the long axis 23a is provided in the front-end | tip of the cutter part 20, and the auxiliary cutter 22b of the short axis 23b is installed, and then the long axis The main cutters 22a of 23a are alternately arranged in an order of being provided.

In addition, the auxiliary cutter 22b of the cutter unit 20 extends adjacent to the long axis 23a of the neighboring main cutter 22a so that the weeds wound on the long axis 23a are cut while being axially rotated. This has a length that makes it possible to prevent weeds from being continuously wound on the long axis 23a.

On the other hand, both the main cutter (22a) and the auxiliary cutter (22b) is formed with a cutter blade 22c inclined obliquely downward at the distal end portion in the rotational direction.

In addition, the front and rear ends of the cutter unit 20 are formed with support members 24 extending further downward than the main cutter 22a, respectively, and are coupled to the lower ends of the support members 24 to cover the lower ends of the cutters 22. A cutter protection plate 25 is provided which is disposed in close proximity to the ground in the shape.

Here, the cutter protection plate 25 is narrower than the length of the cutter 22, and has a V-shape having a bent surface 25a whose both ends are bent upward.

On both sides of the cutter portion 20, there is provided a holder cover 26 having a rectangular plate shape covering the cutter shaft 23 of the cutter portion 20.

The gearbox 30 is hinged by a hinge pin 34 so as to be axially rotatable with respect to the upper surface in a state in which the gear box 30 is placed at the upper end of the wall surface 21 having the depression-shaped cross section of the cutter portion 20 facing the support frame 10. Coupling, a driven rotational shaft 32 which receives power from the drive shaft 8 of the work vehicle and transmits rotational force to the cutter shaft 23 through the belt 80 is gear-coupled with the bevel gear 9.

Here, the V-belt is used as the connection between the driven rotary shaft 32 and the cutter shaft 23, and the subsequent connection between the cutter shafts 23 is performed by a pair of neighboring cutter shafts 23 continuously. It is preferable to apply a known belt connection method connected up and down alternately.

The upper and lower rotation cylinder 40 is connected to the upper end bar 11 of the support frame 10 and the cylinder support 21a formed on the upper end of the wall of the cutter unit 20, so that the cutter unit according to the appearance of the cylinder rod 42 The shaft 20 is rotated up and down by using the hinge coupler 70 as an axis.

Here, the combination of the up and down rotation cylinder 40 and the upper horizontal bar 11 is connected in a known ball joint method is coupled to enable the up and down and left and right rotation.

In addition, when the hydraulic pressure does not operate, the vertical rotation cylinder 40 protrudes and extends the cylinder rod 42 by the weight of the cutter portion 20, and when the cutter protection plate 25 hits the protruding surface, the cylinder rod ( It is preferable that the cylinder rod pressure is set so that 42) is immersed.

The left and right pivot cylinder 50 has a cylinder rod 52 connected to a slider 54 slidably mounted on the rail 19 of the lower horizontal bar 12 of the support frame 10, and the slider 54. And the cutter unit 20 are fixedly connected to the wires 60, and the slider 54 is moved left and right by the expansion and contraction of the cylinder rod 52 to tension the wires on either side, and thus the cutter unit 20 is hinged. It rotates axially to the left-right direction using the rotating shaft 71 of the part 70 as an axis.

In detail, a pair of support brackets 12a are fixedly attached to both rear ends of the lower horizontal bar 12, and both ends are coupled to the support bracket 12a and have a triangular prism shape arranged side by side with the lower horizontal bar. A rail 19 is provided, and a slider 54 made of a rectangular panel having an inverted v-shaped cross section covering the upper portion of the rail 19 to be slidable in the longitudinal direction is provided, and the support bracket 12a is provided. The cylinder rod 52 of the left and right pivot cylinder 50 fixed to is fixedly connected to the slider 54 and a wire 60 is fixedly attached to the center of the slider 54. Both ends are fixedly attached to both side wall surfaces 21 of the cutter section 20, so that the wire rod 60 reciprocates like the cylinder rod 52 as the cylinder rod 52 of the left and right pivot cylinder 50 is released. And selectively on both side walls of the cutter unit 20 Oh pulled, and as a result to ensure that the cutter unit 20 to pivot left and right by a hinged portion 70 as an axis.

Here, the guide roller 15 for supporting the wire 60 on both sides of the lower side bar 12 of the support frame 10 so that the wire 60 is brought close to the wall surface 21 of the cutter unit 20 (preferably). Is provided, and the cutter unit 20 is rotated on the front and rear of the lower side bar 12 of the support frame 10 between the cutter unit 20 and the guide roller 15 when the cutter unit 20 rotates left and right. Is provided with an anti-collision spring (16) for preventing the collision of the front of the support frame (10).

In addition, the slider 54 is connected to the front and rear sides of the sliding direction of the slider 54 by a separate connection piece 54a so as not to be separated to the outside in the state in which the rail 19 is covered with the slider 54. The rail 19 is to be wrapped around the outer circumference.

In addition, as a mechanism for correcting posture to prevent the cutter unit 20 from shaking up, down, left and right when the cutter unit 20 moves up and down and moves left and right, the gear box 30 extends in the longitudinal direction and has both side walls. The guide rail 90 is fixedly installed, one end of which is disposed inside the guide rail 90 and slides forward and backward, and a guide bar of which the other end is hinged to the upper side bar 11 of the support frame 10. 92 is provided.

Here, the guide bar 92 is coupled to the upper side bar 11 in a known ball joint method is connected to enable vertical and horizontal rotation.

On the other hand, reference numeral 94 is a known lift cylinder rod connected to the support frame 10, 96 is a known lift cylinder for lifting the lift cylinder rod 94.

The work vehicle weeding device of the present invention has a cutter connected to the driven rotating shaft 32 and the belt 80 when the driving shaft 8 forwards the driving force to the driven rotating shaft 32 while simultaneously driving the moving vehicle forward. The shafts 23 rotate, and the cutter shafts 23 move forward with the work vehicle to perform the weeding operation.

And, if the ground is uneven during the weeding operation and the area is severely curved, the upper and lower rotary cylinder 40 is operated so that the cutter portion 20 is raised by the hinge coupling portion 70 to the axis so that the cutter 22 is grounded. It is to prevent the collision of the protrusions and the like.

Here, even when the upper and lower rotational cylinder 40 is not operated because the protrusion of the ground is not found, the cutter protection plate 25 is pushed out at the moment of first contact with the projection of the ground, and at the same time, the cylinder rod of the upper and lower rotational cylinder 40 is The 42 is pushed out so that the cutter 22 is prevented from colliding with the projection of the ground.

In addition, the guide bar 92 is slid along the guide rail 90 while the vertical lifting cylinder 40 is elevated, and guides the cutter unit 20 to be vertically elevated so that the cutter unit 20 swings from side to side. This will prevent your posture from becoming unstable.

And, when facing the so-called, blind area between the structure or trees during the weeding operation, this time by operating the left and right rotation cylinder 50 to pull the wire 60 in the desired direction, the cutter unit 20 is hinged ( It is to rotate left and right with 70) as an axis.

When there is an obstacle by this operation, the cutter unit 20 is briefly rotated to the left or the right without the obstacle to avoid the obstacle, and then rotates to the original state again to perform the weeding operation of the region.

And, even when there is no obstacle, if the weeding operation is performed in a state in which the cutter unit 20 is rotated at an angle to the side at an angle, the weeds are cut and pushed to the side, so that the cut weeds do not accumulate in the traveling direction path, This can facilitate the progress of the work vehicle.

In this case, when the left and right pivot cylinder 50 is operated, the wire 60 supports to have a trajectory for easily pulling the cutter portion 20 laterally along the guide roller 15, and, in addition, the plate When the wire 60 is tensioned through the spring 18, the load applied to the wire 60 is applied to the guide roller 15 as it is, thereby preventing the guide roller 15 from being damaged.

That is, when the opposite wire 60 is pulled in accordance with the rotation of the cutter unit 20, the guide roller 15 hanging on the wire 60 is also elastic in the direction of being pulled by the elastic force of the leaf spring 18. As a result, the cutter 20 is smoothly rotated as it slides.

And, during the weeding operation, when weeding the obliquely inclined garden located on the side of the work vehicle, this time operating the upper and lower rotation cylinder 40 and the left and right rotation cylinder 50 at the same time, It is to be able to arrange the cutter unit 20 so that the weeding operation on the inclined surface easily.

As such, according to the degree of curvature of the ground or the state of the terrain, the cutter unit 20 can be moved up and down and left and right to a desired position to smoothly perform the weeding operation.

As described above, the work vehicle weeding device of the present invention allows the cutter unit equipped with a plurality of cutters connected to the support frame to be freely rotated from side to side during the weeding operation, thereby inclining the cutter unit at an angle with respect to the traveling direction of the work vehicle. Not only does it reduce the herbicidal resistance, but also the long cut weeds are pushed outwards in the direction of travel, so that they do not accumulate in the front of the direction of travel. Excellent weeding ability, and also allows the cutter to enter the corners of structures and trees, etc. Also, by moving the cutter up and down, the cutter does not hit the projected ground and is not damaged, regardless of the size of the weeds. Freedom of work from short to long weeds This narrowing is less the radius of rotation of the working vehicle is obtained an effect such as to occur to a herbicidal action smoothly in a small space.

Claims (15)

Upper and lower portions of the vertical bar 13 and the lower horizontal bar 12 which are connected to the rear end of the work vehicle and connect both ends of the upper and lower horizontal bars 11 and 12 and these upper and lower horizontal bars 11 and 12. A support frame (10) consisting of axial support bars (12b) arranged side by side; According to the expansion and contraction of the left and right pivot cylinder 50 coupled to the entire horizontal bar 12 of the support frame 10 by tensioning the wires 60 fixed to both wall surfaces 21 of the cutter unit 20 A hinge coupling part 70 whose one end is hinged to the axial support bar 12b of the support frame 10 so as to rotate left and right with respect to the center of the frame 10; And Rotating up and down based on the hinge coupler 70 according to the expansion and contraction of the up and down pivot cylinder 40 connected between the upper horizontal bar 11 of the support frame 10 and the cylinder support 21a on the upper surface of the wall 21. A cutter portion 20 in which one end thereof is coupled to the hinge coupling portion 70 and a plurality of cutter shafts 23 having cutters 22 are attached to the other wall surface 21 thereof; Weeding device for a work vehicle configured to include. According to claim 1, The hinge portion 70, A rotating shaft 71 on which the upper and lower ends thereof are in contact with the shaft support bar 12b of the support frame 10; And One end portion is fixedly coupled to the rotary shaft 71, the other end portion of the left and right pivot plate 72 is coupled to the hinge pin (73) so that one end of the cutter portion 20 can be rotated up and down; Weeding device for the work vehicle, characterized in that consisting of. The cutter shaft of claim 1, wherein the hinge shaft is coupled to an upper end of the wall surface 21 of the cutter unit 20 facing the support frame 10, and receives power from the drive shaft 8 of the work vehicle and receives the cutter shaft through the belt 80. Weaving device for the work vehicle, characterized in that the gearbox 30 is further provided with a driven rotary shaft 32 for transmitting the rotational force to (23). According to claim 1, wherein the left and right pivot cylinder 50, A slider 54 sliding on a rail 19 coupled to all of the lower bar 12 of the support frame 10 is provided, the cylinder rod 52 is coupled to the slider 54, and the slider 54 is provided. ) And the cutter portion 20 are fixed to the wires 60, respectively, when the cylinder rod 52 expands and contracts, the slider 54 is moved left and right to tension the wire 60 on either side, and the cutter portion 20 rotates ( 71) The weeding device for the work vehicle, characterized in that the left and right pivot about. The guide rail 90 is fixedly installed on the upper surface of the gearbox 30 and extends in the longitudinal direction, and the guide rail 90 when the cutter unit 20 is moved up or down and moves left and right. According to claim 1, the front and rear sliding, and the other end of the mowing device for a vehicle, characterized in that the other end is further provided with a guide bar (92) hinged to the upper side bar (11) of the support frame (10). According to claim 1, wherein the front and rear ends of the cutter portion 20 is formed with a support 24 extending further downward than the cutter 22, respectively, are coupled to the lower end of the support 24 and the lower of the cutters 22 Weaving device for a working vehicle, characterized in that the cutter protection plate 25 is disposed in close proximity to the ground in a shape covering the. 7. The weeding device according to claim 6, wherein the cutter protection plate (25) is narrower in width than the length of the cutter (22), and has a bent surface (25a) whose both ends are bent upward. 2. The weeding device for a work vehicle according to claim 1, wherein a holder cover (26) covering the cutter portion (20) is provided on both sides of the cutter portion (20). The plurality of cutter shafts 23 in contact with the cutter unit 20 include a plurality of long shafts 23a having a main cutter 22a and a plurality of short shafts 23b having an auxiliary cutter 22b. And a long axis (23a) and a short axis (23b) are alternately arranged along the longitudinal direction. 10. The weeding device for a work vehicle according to claim 9, wherein the auxiliary cutters (22b) of the cutter portion (20) have a length that extends such that both ends thereof are adjacent to the long axis (23a) of the neighboring main cutter (22a). . According to claim 1, wherein the upper and lower rotation cylinder 40, the cylinder rod 42 is protruded and extended by the weight of the cutter portion 20, the cylinder rod 42 is hit when the cutter protection plate 25 hits the ground Weaving device for work vehicles, characterized in that the cylinder rod pressure is set to be immersed. According to claim 4, Wire 60 is fixedly attached to the center portion of the slider 54 coupled to the cylinder rod 52 of the left and right pivot cylinder 50, the other end of the wire 60 is cutter portion 20 Are fixedly attached to upper portions of both side walls 21 of the side wall, and wires 60 are opened at a predetermined angle with respect to the wall surface 21 of the cutter unit 20 on both sides of the lower horizontal bar 12 of the support frame 10. A weaving device for a work vehicle, comprising: a guide roller 15 for supporting and guiding to be supported.  According to claim 12, The guide roller 15 formed to the outside is installed on the slide plate 17 of the lower side bar 12 so that the impact to the cutter portion 20 is relaxed when the wire 60 is tensioned, Slide plate 17 is connected to the lower end of the leaf spring (19), the upper end of which is fixed to the vertical bar (13) of the support frame 10, characterized in that the weaving device for the vehicle to slide elastically. The anti-collision spring (16) according to claim 1, wherein the cutter unit (20) is axially rotated on both sides of the front side of the lower side bar (12) of the support frame (10) so as not to hit the front surface of the support frame (10). Weaving device for the work vehicle, characterized in that provided. The work wheel according to claim 1, wherein the auxiliary wheels 14 are provided on both sides of the lower side horizontal bar 12 of the support frame 10 so as to support the load of the cutter unit 20 and to smoothly travel. Weeding devices.

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