JP6132436B2 - Farm ditcher - Google Patents

Description

  The present invention relates to a field ditcher that forms a drainage groove in a field such as a paddy field.

  Conventionally, as this type of field grooving machine, a mounting frame is connected to a traveling machine body by a connecting mechanism, a main body frame is provided to the mounting frame, a machine frame is provided to the main body frame, and a groove is cut into the machine frame. There has been known a structure in which a possible grooved body is provided, and a plowing member is provided on the machine frame so that the field soil in the rearward direction of the grooved body can be scooped and discharged to the side.

Japanese Patent No. 3787666

  However, in the case of the above-described conventional structure, when the vehicle runs around the entire surface of the farm scene and performs the grooving operation with the grooved body and the plowing member, the grooved body and the plowing member are integrally disposed on the traveling machine body. For example, at a position close to the inner peripheral corner of a paddy field scene, it is not possible to steer the traveling vehicle and travel in a turning direction as it is, and a position before reaching the inner peripheral corner. In this case, the traveling machine body is temporarily stopped, the groove cutting body and the plow member are lifted and separated from the farm scene by the coupling mechanism, and the traveling machine body is steered and bent in this state, and after turning, the coupling mechanism The grooving body and the plow member are brought into contact with the field and lowered, and then the traveling machine body is run and the grooving work is performed by the grooving body and the plowing member. The dug groove is not formed continuously, the water Function has a disadvantage may be reduced.

The present invention aims to solve these disadvantages, and the invention according to claim 1 is characterized in that a mounting frame is connected to a traveling machine body by a connecting mechanism, a main body frame is provided on the mounting frame, and the main body frame is provided with the main body frame. A machine frame is provided, and a groove member that can be grooved in a field scene is provided on the machine frame, and a plow member that can scoop the field soil at a rear position in the advancing direction of the groove cutter in the machine frame and discharge it to the side. A moving mechanism is provided between the mounting frame and the main body frame to move the machine frame in the left-right direction orthogonal to the traveling direction of the traveling machine body, and the rack is attached to the mounting frame as the moving mechanism. A toothed body is attached, a moving gear and a moving motor for rotationally driving the moving gear are attached to the main body frame, and the moving motor is rotated forward and backward to engage the moving gear and the rack toothed body. To move the machine frame in the left-right direction perpendicular to the traveling direction of the traveling machine body. And configured to, the該機frame between the body frame and該機frame in the field grooving machine characterized by comprising providing a pivot mechanism connecting freely horizontally pivot relative to the traveling machine body is there.

According to the second aspect of the present invention, the mounting frame is connected to the traveling machine body by a connecting mechanism, the main body frame is provided on the mounting frame, the machine frame is provided on the main body frame, and the machine frame can be grooved in a field scene. A groove member is provided, and a plow member is provided on the machine frame so that the field soil in the rearward direction of the groove member can be scooped and discharged to the side, and between the mounting frame and the main body frame. A moving mechanism for moving the machine frame in the left-right direction perpendicular to the traveling direction of the traveling machine body is provided, and as the moving mechanism, a moving screw shaft and a moving screw shaft that rotationally drives the moving screw shaft are mounted on the mounting frame. A motor is mounted, a moving nut body is disposed on the main body frame, the moving motor is rotated forward and reverse, and the machine frame is moved to the traveling machine body by screwing the moving screw shaft and the moving nut body. The main body frame and the machine frame. In field grooving machine characterized by comprising providing a pivot mechanism connecting freely horizontally pivot relative to the vehicle body to該機frame between.

According to a third aspect of the present invention, the pivot mechanism is provided with a turning vertical axis for connecting the main body frame and the machine frame so as to be horizontally turnable.

As described above, according to the first aspect of the present invention, the mounting frame, the main body frame, and the machine frame are pulled by running of the traveling machine body, and the lower part of the grooved body provided in the machine frame and the plow member. The lower part of the road travels while penetrating into the farm scene, and by running of this traveling machine body, the grooving body advances while rotating and cuts the groove in the farm scene, and the grooved soil is plowed behind it. It is scraped off by the member and discharged to the side. As a result, a groove digging operation for digging a groove in the field is performed. At this time, the machine frame is placed between the mounting frame and the main body frame. A moving mechanism that moves in the left-right direction perpendicular to the direction of travel is provided, and a pivoting mechanism is provided between the main body frame and the machine frame to connect the machine frame to the traveling machine body so as to be able to turn horizontally. Even if the aircraft is steered and the traveling direction of the traveling aircraft is bent, the frame is It is pulled by the traveling machine body while making a flat turn, and therefore the traveling machine body is stopped even in the area adjacent to the inner peripheral corner of the farm scene, and the groove cutting body and the plow member are moved up and down in the stopped state. Therefore, it is possible to continuously run a ditching work by continuously turning around the traveling machine body, so that it is possible to improve the ditching work efficiency and to continuously form the ditched groove. A groove having a good drainage function can be formed, and the machine frame can be moved closer to the paddy field by the moving mechanism, and the position close to the paddy field and the inner periphery of the field Groove work can be performed while turning around the corner by a pivoting mechanism, thereby forming a groove with a good drainage function in the vicinity of the buttock and in the vicinity of the inner peripheral corner of the field scene. It can be, the moving mechanism Then, a rack tooth body is attached to the attachment frame, a movement gear and a movement motor for rotationally driving the movement gear are attached to the main body frame, and the movement motor and the operation gear are rotated in the forward and reverse directions. Since the machine frame is configured to move in the left-right direction perpendicular to the traveling direction of the traveling machine body by meshing with the rack tooth body, the forward / reverse rotation of the moving motor and the rack tooth body are moved. The machine frame can be moved smoothly by meshing with the gears for use, and the structure can be simplified.

In the invention according to claim 2, the mounting frame, the main body frame, and the machine frame are towed by traveling of the traveling machine body, and the lower part of the grooved body and the lower part of the plow member provided on the machine frame are field scenes. The grooving body travels while rotating as the traveling machine body travels to cut the grooves in the field scene, and the grooved soil is scraped by the plow members behind it. As a result, a digging operation for digging a groove in the field is performed. At this time, the machine frame is placed between the mounting frame and the main body frame with respect to the traveling direction of the traveling machine body. A moving mechanism that moves in the right and left directions perpendicular to each other is provided, and a pivoting mechanism that connects the machine frame to the traveling machine body so as to be able to turn horizontally is provided between the main body frame and the machine frame. Even if the traveling direction of the traveling aircraft is bent and changed, the machine frame is turned horizontally by the pivot mechanism. In the area adjacent to the inner peripheral corner of the farm scene, it is pulled by the rowing machine body, and without stopping the traveling machine body or in the stopped state, the groove cutting body and the plowing member are not moved up and down, It can continuously run around the traveling machine body and can continuously perform grooving work, so that the grooving work efficiency can be improved and the grooved grooves are formed continuously, draining function Can be formed, and the frame can be moved closer to the paddy field by the above-mentioned moving mechanism, in the position close to the paddle and near the inner peripheral corner of the field scene. It is possible to perform a groove digging operation while turning by a pivoting mechanism along this, and thereby it is possible to form a groove having a good drainage function in the vicinity of the buttock and in the vicinity of the inner peripheral corner of the field scene, As the moving mechanism, the above installation A moving screw shaft and a moving motor for rotationally driving the moving screw shaft are attached to the main body frame, a moving nut body is disposed on the main body frame, and the moving motor is rotated forward and backward to move the moving screw shaft and the moving nut. Since the machine frame is configured to move in the left-right direction orthogonal to the traveling direction of the traveling machine body by screwing with the body, forward and reverse rotation of the moving motor and the moving screw shaft and the moving The machine frame can be smoothly moved by screwing with the nut body, and the structure can be simplified.

In the invention according to claim 3 , since the pivot mechanism is provided with a turning vertical axis for connecting the main body frame and the machine frame so as to be horizontally rotatable, The connection can be easily performed and the structure can be simplified.

1 is an overall side view of a first embodiment of the present invention. It is a fragmentary sectional side view of the first embodiment of the present invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a fragmentary longitudinal cross-sectional view of the first embodiment of the present invention. It is a fragmentary longitudinal cross-sectional view of the first embodiment of the present invention. It is a fragmentary longitudinal cross-sectional view of the first embodiment of the present invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a top view which shows the use condition of the example of 1st Embodiment of this invention. It is a fragmentary sectional side view of the 2nd example of an embodiment of the invention. It is a fragmentary top view of the 2nd example of an embodiment of the invention. It is a fragmentary longitudinal cross-sectional view which shows the use condition of the 2nd embodiment of this invention.

  1 to 12 show an embodiment of the present invention, FIGS. 1 to 9 show a first embodiment, and FIGS. 10 to 12 show a second embodiment.

  In the first embodiment shown in FIGS. 1 to 9, reference numeral 1 denotes a traveling machine body, in this case, a tractor, and a mounting frame 3 is connected to a rear portion of the traveling machine body 1 by a connecting mechanism 2, and is connected to the mounting frame 3. A main body frame 4 is provided, and a machine frame 5 is connected to the main body frame 4 by a pivot mechanism 6 so as to be horizontally rotatable.

  In this case, as shown in FIG. 1 and FIG. 2, the connecting mechanism 2 includes the left and right lower links 2a and 2a, upper links 2b and 2b, lifting links 2c and 2c, and hydraulic arms 2d and 2d at the rear of the traveling machine body 1. The three-point link mechanism is provided. The three-point link mechanism connects the mounting frame 3 to the traveling machine body 1, and the mounting frame 3 can be moved up and down by the vertical swing of the hydraulic arms 2d and 2d of the three-point link mechanism. It is provided and configured.

  In this case, a movement guide mechanism 7 is provided between the attachment frame 3 and the main body frame 4, and the main body frame 4 is provided by the movement guide mechanism 7 so as to be movable and guided in the left-right direction perpendicular to the traveling direction of the traveling machine body 1. In addition, a moving mechanism 8 is provided for moving the main body frame 4 and the machine frame 5 guided to move in the left-right direction intersecting the traveling direction of the traveling machine body 1.

  In this case, as shown in FIG. 4, as the movement guide mechanism 7, the mounting frame 3 is formed in a square frame shape composed of upper and lower guide rods 3a and 3a and left and right vertical rods 3b and 3b. A pair of left and right guide rolls 7a and 7a are disposed between the guide rods 3a and 3a, and the main body frame 4 is moved to the left and right by sliding fitting between the guide rolls 7a and 7a and the guide rods 3a and 3a. It is provided so as to be movable in the direction.

  In this case, as the moving mechanism 8, as shown in FIGS. 2 and 4, a moving motor 8a is attached to the main body frame 4, and a moving gear 8b is attached to the main shaft of the moving motor 8a. A rack tooth body 8c that meshes with 8b is attached and fixed to a guide rod 3a on the upper side of the mounting frame 3, and the moving motor 8a is rotated forward and backward to engage the moving gear 8b and the rack tooth body 8c. 4 is configured to move in the left-right direction.

  In this case, as shown in FIGS. 2, 3, 7, and 8, as the pivot attachment mechanism 6, a bifurcated female connecting piece 6 a is attached to the rear part of the main body frame 4 in the moving direction, and the machine frame 5 A male connecting piece 6b is formed at the front part in the traveling direction, a male connecting piece 6b is fitted into the female connecting piece 6a, and the main body frame 4 and the machine frame 5 are interposed between the female connecting piece 6a and the male connecting piece 6b. Are vertically provided with a swivel longitudinal axis 6c that connects them horizontally.

  9 and 10 are a pair of grooved bodies, and in this case, as shown in FIGS. 2 and 5, several blade portions 9a and 10a are cut out on the outer peripheral portion, and the machine frame 5 is a support machine frame. 5a and a work machine frame 5b. A cylinder 11 is attached to the lower end of the work machine frame 5b, an axle 12 is rotatably supported on the cylinder 11, and a groove is cut in the field M at both left and right ends of the axle 12. A pair of possible grooving bodies 9 and 10 are attached at predetermined intervals, and the traveling body 1 travels while rotating along with the traveling machine body 1 so that two ridges R are grooved in the field M. It is configured to cut.

  Reference numeral 13 denotes a plowing member. In this case, as shown in FIGS. 2 and 3, the width of the tip of the plowing member 13 is formed to be substantially the same as the width between the grooved bodies 9, 10. Is formed in a tapered cutting portion 13a, and a rear portion is formed in a discharge portion 13b twisted so as to discharge the cut soil to the side, and a mounting arm formed in a U shape at the lower portion of the work machine frame 5b. 14 is pivotally attached to the support shaft 15, and a nut body 17 is pivotally attached to the upper portion of the work machine frame 5 b by a pin 16 and is rotatably provided. A screw rod 18 is threadedly attached to the nut body 17. By rotating 19, the nut body 17 is rotated so that the screw rod 18 can be moved up and down, and the lower end portion of the screw rod 18 is pivotally attached to the middle portion of the mounting arm 14 by the pin 20. The member 13 is configured by being attached by a bolt 21 and the handle 19 is forward / reverse. The plowing member 13 is provided so as to be adjustable by movement, and the soil that has been grooved into two strips by the grooving bodies 9 and 10 by running of the traveling machine body 1 is scraped by the rear plowing member 13 and discharged to the side. It is configured as follows.

22 is a stabilizing member, in this case, FIG. 2, as in FIG. 3, can abut the side on the inner side surface W ₁ of the contact plate face 22a which can come into contact with the field surface M and digging taken grooves W A pair of left and right angle members made of contact plate surfaces 22b are formed. A support piece 23 projects from the rear surface of the mounting arm 14, a connecting piece 24 is formed on the stabilizing member 22, and the supporting piece 23 and the connecting piece 24 are formed. Are connected by a connecting pin 25, whereby the stabilizing member 22 is attached to the mounting arm 14 so as to be slightly swingable.

  26 is a pretreatment member, and 27 is a drive mechanism. In this case, as shown in FIGS. 2, 4, and 6, an upper rotary shaft 28 and a lower rotary shaft 29 are horizontally mounted on the main body frame 4, and an upper rotary shaft is provided. 28 and the lower rotating shaft 29 are connected by driving by a gear mechanism 30, the power take-off shaft 1 a of the tractor that is the traveling machine body 1 and the upper rotating shaft 28 are connected by a universal joint 31, and an attachment disk 26 a is connected to the lower rotating shaft 29. A plurality of, in this case, three discharge members 26b, 26b, and 26b are attached to the attachment disk 26a by bolts 26c, and a cover member 32 is attached to the attachment frame 3.

  Reference numeral 33 denotes an attitude holding mechanism, which is configured to be able to hold the no-load attitude of the machine casing 5 in the advancing direction of the traveling machine body 1 in a non-grooving work state. In this case, as shown in FIGS. As a posture holding mechanism 33, a pair of left and right postures that can hold the no-load posture of the machine frame 5 between the main body frame 4 and the machine frame 5 in the traveling direction of the traveling machine body 1 shown in FIG. The springs 33a and 33a are constructed.

  Reference numeral 34 denotes a weight. In this case, as shown in FIGS. 2 and 3, two weights 34 are provided on the machine frame 5 so as to be freely detachable.

  Reference numeral 35 denotes a position fixing mechanism. A plate-like fixing member 35b is attached to the main body frame 4 by pins 35a so as to be rotatable in forward and reverse angles, and the fixing member 35b can be detachably fitted to the machine frame 5. A concave groove-like fitting groove 35c having the same groove width as the plate width of 35b is formed, and the fixing member 35b is rotated rearward in the advancing direction around the pin 35a as shown in the imaginary line position in FIG. The machine frame 5 is fixed in position by fitting the fixing member 35b in the fitting groove 35c to prevent horizontal rotation of the machine frame 5, or the fixing member 35b is centered on the pin 35a as shown by the broken line in FIG. As a result, the fixing member 35b is detached from the fitting groove 35c and the horizontal rotation of the machine frame 5 is permitted, thereby allowing the horizontal rotation of the machine frame 5 to be selectively allowed or prevented. It is composed.

  Since the first embodiment of the present embodiment has the above-described configuration, as shown in FIG. 9, the mounting frame 3, the main body frame 4, and the machine frame 5 are towed by traveling of the traveling machine body 1, and the grooves provided in the machine frame 5 are cut. The lower part of the bodies 9 and 10 and the lower part of the plowing member 13 travel while penetrating into the farm scene M, and the traveling body 1 travels while the grooving bodies 9 and 10 rotate and rotate to advance the farm scene M. Then, the two strips R are cut, and the soil between the two strips is scraped by the rear plowing member 13 and discharged to the side. As a result, the trench W is dug in the field scene M. At this time, a moving mechanism 8 is provided between the mounting frame 3 and the main body frame 4 to move the machine frame 5 in the left-right direction orthogonal to the traveling direction of the traveling machine body 1. A pivot attachment mechanism 6 is provided between 4 and the machine frame 5 to connect the machine frame 5 to the traveling machine body 1 so as to be able to turn horizontally. Therefore, as shown in FIG. 8, even if the traveling body 1 is steered and the traveling direction of the traveling body 1 is bent, the frame 5 is pulled by the traveling body 1 while horizontally turning by the pivot mechanism 6. Therefore, also in the area adjacent to the inner peripheral corner of the farm scene M, the traveling machine body 1 is stopped, and the grooved bodies 9 and 10 and the plowing member 13 are moved up and down in the stopped state. In addition, it is possible to continuously run around the traveling machine body 1 and continuously perform the grooving work, and accordingly, the grooving work efficiency can be improved, and the grooved groove W is continuously formed. The groove W having a good drainage function can be formed, and the machine frame 5 can be moved closer to the paddy field by the moving mechanism 8 as shown in FIG. Can be placed at a position, close to the buttocks Groove work can be performed while pivoting along the vicinity of the inner peripheral corner of the surface M by the pivot mechanism 6, so that the drainage function can be performed at the position near the buttock and the inner peripheral corner of the farm scene M. A good groove W can be formed.

  In this case, as shown in FIGS. 2, 3 and 4, the moving mechanism 8 has a rack tooth body 8c attached to the guide rod 3a on the upper side of the mounting frame 3, and the movement gear 8b and the movement are attached to the main body frame 4. A moving motor 8a that rotationally drives the gear 8b is attached, and the moving motor 8a is rotated forward and backward to engage the machine gear 8b with the rack tooth body 8c to move the machine frame 5 in the traveling direction of the traveling machine body 1. Therefore, the structure can be simplified and the structure can be simplified by meshing the rack tooth body 8c with the moving gear 8b.

  In this case, as shown in FIGS. 2, 3, and 8, the pivot mechanism 6 is provided with a turning longitudinal axis 6c that connects the main body frame 4 and the machine frame 5 so as to be horizontally rotatable. 4 and the machine frame 5 can be easily connected, the structure can be simplified, and the no-load posture of the machine frame 5 is held in the straight traveling direction of the traveling machine body 1 shown in FIG. Since the possible posture holding mechanism 33 is provided, the no-load posture of the machine frame 5 in a non-grooving work state or the like can be held in the straight traveling direction. For example, the machine frame 5 is separated from the farm scene M. When the machine casing 5 is in the free state when it is raised, it can suppress unexpected swinging in the left-right direction with respect to the center position as the straight traveling direction of the machine casing 4, and safety can be improved. In this case, as the posture holding mechanism 33, a pair of right and left is provided between the mounting frame 3 and the machine frame 5. Since the force holding springs 33a and 33a are installed, the structure of the posture holding mechanism 33 can be simplified, and when the machine casing 5 swings in the left and right directions, a pair of left and right posture holding springs 33a is provided. Any one of the posture holding springs 33a of 33a forcibly restores and turns the posture of the machine frame 5 in the traveling direction of the traveling machine body 1, and the presence of the pivot mechanism 6 Unexpected left and right swings can be suppressed.

  In the above embodiment, as shown in FIGS. 2, 5, and 6, the field scattered matter E such as sawdust scattered in the field scene M is disposed at the forward position of the grooved bodies 9 and 10 in the traveling direction. Since the pretreatment member 26 that can be discharged to the side is rotatably provided and the drive mechanism 27 that rotates the pretreatment member 26 is provided, the field scattered matter E such as sawdust and stock scattered in the field M is the front. It is discharged to the side by the processing member 26, and the grooving resistance of the grooving bodies 9 and 10 and the grooving resistance of the plowing member 13 can be reduced accordingly.

Further, in this case, since the weight 34 is detachably attached to the machine frame 5, the machine frame 5 can be prevented from rising due to the grooving resistance of the plowing member 13, and the digging by the plowing member 13 can be improved. In this case, the abutting plate surface 22a of the stabilizing member 22 advances while abutting on the field scene M close to the dug groove W, so that the height of the plowing member 13 can be stabilized. It is possible to prevent the plowing member 13 from scooping up the field mud and increase the traction force depending on the state of the field soil, and to obtain an action of keeping the depth of the groove W constant, and the contact of the stabilizing member 22 Since the plate surface 22a is located behind the plowing member 13 in the traveling direction, the entanglement of the field scattered matter E such as sawdust scattered in the field scene M is reduced, and the side contact plate surface 22b of the stabilizing member 22 is further reduced. contact friendly inside surface W _l digging taken grooves W is Therefore, it is possible to suppress the lateral swing of the plowing member 13 and the groove cut bodies 9 and 10, and the groove digging work can be performed satisfactorily.

  In this case, as shown in FIG. 2, since the position fixing mechanism 35 capable of selectively allowing or preventing the horizontal turning of the machine frame 5 is provided, the machine frame 5 is not loaded in the non-grooving state. The posture can be fixed, the unexpected swinging of the machine casing 5 due to the presence of the pivot attachment mechanism 6 can be prevented, and safety can be improved.

  The second embodiment shown in FIGS. 10 to 12 shows another example of the structure of the moving mechanism 8. The same reference numerals are given to the same portions as the first embodiment, and the description is omitted in this case. 11 and 12, the moving screw shaft 80b and the moving motor 80a for rotationally driving the moving screw shaft 80b are mounted on the mounting frame 3, and the moving nut body 80c is disposed on the main body frame 4. Then, the moving motor 80a is rotated forward and backward, and the machine frame 5 is moved in the left-right direction orthogonal to the traveling direction of the traveling machine body 1 by screwing the moving screw shaft 80b and the moving nut body 80c. It is configured as follows.

  Since the second embodiment of the present embodiment has the above-described configuration, the moving mechanism 8 has a moving screw shaft 80b and a moving motor 80a that rotationally drives the moving screw shaft 80b attached to the mounting frame 3 as the moving mechanism 8. 4, a moving nut body 80c is disposed, and the moving motor 80a is rotated forward and backward to screw the moving screw shaft 80b and the moving nut body 80c into the machine frame 5 in the traveling direction of the traveling machine body 1. Since it is configured to move in the right and left directions orthogonal to the machine frame 5, the machine frame 5 is smoothly moved by forward / reverse rotation of the moving motor 80a and screwing of the moving screw shaft 80b and the moving nut body 80c. And the structure can be simplified.

  The present invention is not limited to the above-described embodiment. In the above-described embodiment, the groove cut bodies 9 and 10 are a pair of groove cut bodies, but the groove cut bodies 9 and 10 are formed. It may be a blade-shaped groove cutting blade, or may have only one groove cutting body and a structure in which the groove cutting body is forcibly rotated. In the above embodiment, a pair of groove cutting bodies 9 and 10 is used. In addition, one set of plow members 13 is arranged, but two or more sets may be used.

  As described above, the intended purpose can be sufficiently achieved.

M farm scene 1 traveling machine body 2 connecting mechanism 3 mounting frame 4 main body frame 5 machine frame 6 pivoting mechanism 6c turning vertical axis 8 moving mechanism 8a moving motor 8b moving gear 8c rack toothed body 9 groove cut body 10 groove cut body 13 Plowing member 80a Moving motor 80b Moving screw shaft 80c Moving nut body

Claims (3)

A mounting frame is connected to the traveling machine body by a connecting mechanism, a main body frame is provided on the mounting frame, a machine frame is provided on the main body frame, and a grooved body that can be grooved in a farm scene is provided on the machine frame. A plowing member that can scrape the field soil in the rearward direction of the groove cutting body and discharge it to the side is provided, and the machine frame is disposed between the mounting frame and the main body frame in the traveling direction of the traveling machine body. A moving mechanism for moving the moving gear and a moving motor for rotating the moving gear to the main body frame. Attach and rotate the motor for forward and reverse rotation to move the machine frame in the left-right direction perpendicular to the traveling direction of the traveling machine body by meshing the moving gear and the rack tooth body. horizontal handed the該機frame with respect to the traveling machine body between the body frame and該機frame Field grooving machine characterized by comprising providing a pivot mechanism for rotatably connected. A mounting frame is connected to the traveling machine body by a connecting mechanism, a main body frame is provided on the mounting frame, a machine frame is provided on the main body frame, and a grooved body that can be grooved in a farm scene is provided on the machine frame. A plowing member that can scrape the field soil in the rearward direction of the groove cutting body and discharge it to the side is provided, and the machine frame is disposed between the mounting frame and the main body frame in the traveling direction of the traveling machine body. A moving mechanism for moving the moving screw shaft and a moving motor for rotationally driving the moving screw shaft to the mounting frame, and moving the moving frame to the main body frame. A nut body is arranged, the moving motor is rotated forward and backward, and the machine frame is perpendicular to the traveling direction of the traveling machine body by screwing the moving screw shaft and the moving nut body. the vehicle body of該機frame between and configured to move, the body frame and該機frame to Field grooving machine characterized by comprising providing a pivot mechanism connecting freely horizontally pivot for. The field ditcher according to claim 1 or 2 , wherein the pivot attachment mechanism comprises a turning vertical axis that connects the main body frame and the machine frame so as to freely turn horizontally.