JP6846794B2 - Ridge forming machine - Google Patents

Description

The present invention relates to a ridge forming machine that is mounted on a tractor and offsets a working portion to the side of the tractor to repair old ridges and form new ridges.

As a configuration of the conventional ridge forming machine, for example, Japanese Patent Application Laid-Open No. 11-243705 “Ridge forming machine” (Patent Document 1) or JP-A-20001-1090103 “Ridging machine” (Patent Document) by the same applicant. 2) Alternatively, Japanese Patent Application Laid-Open No. 11-75410 "Ridge Coating Machine" (Patent Document 3) is disclosed. The ridge forming machine according to Patent Document 1 includes "a soil filling device that supplies soil to the ridge forming portion and a ridge forming device that compacts the soil piled up in the ridge forming portion to form ridges, and forms ridges. The device consists of a frame frame that projects to one side with a power transmission unit that inputs and converts power, and a transmission case that is installed so that it can swing up and down with respect to this frame frame. A ridge forming machine characterized in that a ground ring that receives the reaction force of the ridge forming device is directly provided. "

Further, the ridge coating machine of Patent Document 2 states, "In the ridge transmission case that transmits power to the ridge body of the work portion support frame, a ground ring is placed on the axis substantially the same as the rotation axis of the ridge body in a plan view. A ridge coating machine that is arranged so that it can be moved up and down is disclosed.

Further, the ridge coating machine of Patent Document 3 has a rotary having a large number of cutting blades that cut the mud for ridge coating and flip it up onto the old ridge, and the mud that is located behind the rotary and is flipped up is applied to the old ridge. It is a ridge coating machine having a ridge coating body that is attached to repair old ridges, and has a directional wheel supporting means 137 in which a directional ring 136 that also serves as a gauge ring is rotatably provided at the outer end of the lower rotating arm 101. The direction wheel 136 is provided with a conical ground plate portion 147 that is widened and inclined toward the adjustment support blade 145 with the axle 146 as the center, and a ground plate portion 147 that protrudes vertically from the opening edge portion of the ground plate portion 147. There is disclosed a ridge coating machine configured to have an annular direction regulating section 148 that digs into and regulates the direction.

Japanese Unexamined Patent Publication No. 11-243705 Japanese Unexamined Patent Publication No. 20001-1090103 JP-A-11-75410

The ridge forming device consists of a cylindrical rotating body that rotates orthogonally to the ridge and passes through the upper surface of the ridge, and a conical rotating body having a conical surface that passes through the side surface of the ridge and forms the side surface of the ridge. The ridges are formed by pressing the soil piled up by the soil filling device provided in the above while rotating. For this reason, the ridge forming device is pushed in the direction away from the ridges due to the reaction force for pressing, which causes inconveniences such as the tractor equipped with the ridge forming machine cannot travel straight. In order to solve such a problem, in the ridge forming machine disclosed in the above-mentioned prior art documents and the like, the outer peripheral portion of the disk-shaped ground ring facing in the traveling direction is pierced into the ground to form the ridge forming device. It is configured so that it can go straight by receiving the reaction force generated from the conical rotating body.

However, there is a problem that the magnitude of the reaction force changes depending on the water condition and soil quality of the soil forming the ridge, and the soil and impurities adhere to the ground ring and float up, and it is insufficient to receive the reaction force. there were.

From this, it is an object of the present invention to provide a ridge forming machine capable of easy maneuvering of a tractor during work and proper ridge coating work.

In order to solve the above problem, the invention according to claim 1 is provided in a ridge forming machine which is provided on a main body frame connected to a traveling vehicle and offsets a working portion to the side of the traveling vehicle to perform ridge forming work. The working portion is moved along the ridge forming portion, and the soil is scraped up to the ridge forming portion by a tilling rotor to supply the soil to a raised state, and the ridge provided behind the soil filling portion in the moving direction. It is a working part that has a molding part, and the ridge forming part forms a ridge by pressing and passing it while rotating on a ridge forming part in which the soil is raised in the earthen part. Has a cylindrical rotating body that forms the upper surface of the ridge and a conical rotating body that is attached to one end side of the cylindrical rotating body to form the side surface of the ridge, and the conical rotating body moves up and down with respect to the main body frame. It is provided on the rotating end side of a directionally rotatable transmission frame, and its vertical position can be adjusted with respect to the earthen portion. The transmission frame is fitted with a U-shaped bracket in a plan view provided by the transmission frame. A disk-shaped ground ring is provided so that the vertical position can be adjusted by a supporting arm, and the lower end portion pierces the surface of the field and rotates in the direction of travel. The ground ring is conical with respect to the ridge to be formed. It is provided at a position away from the rotating body, and the conical rotating body side in the left-right direction is flat and the other side is formed in a conical trapezoidal shape. We propose a ridge forming machine characterized in that a scraper is provided , and the scraper is held by a scraper holding bracket provided so as to be fixed to the support arm side.

In order to solve the above problem, in the invention according to claim 2, the rotation axis of the ground ring is provided so as to be inclined toward the rear side on the conical rotating body side with respect to the vertical plane orthogonal to the traveling direction in the plan view. The ridge forming machine according to claim 1, wherein the ridge forming machine is characterized by the above.

According to the present invention, a conical rotating body is provided on the rotating end side of a transmission frame that can rotate in the vertical direction with respect to the main body frame, and the lower end portion is inserted into the field surface and rotates in the traveling direction. Since the ground ring is provided on the transmission frame so that the vertical position can be adjusted, the amount of penetration of the ground ring is constant even when the conical rotating body is vertically adjusted, and the adjustment can be easily performed. In addition, the ground ring has a flat shape on the left-right conical rotating body side and a truncated cone shape on the other side, which facilitates insertion, and a truncated cone-shaped slope in the lateral direction. Since the reaction force acts as a component force to the ground side where it is pierced and received, the force is dispersed and the reaction force is sufficiently received. Further, since the truncated cone-shaped slope portion is provided with a scraper for peeling off the adhering soil, the soil and impurities do not adhere and the performance of the ground ring is not impaired.

Further, the rotation axis of the ground ring is provided so as to be inclined toward the rear side on the conical rotating body side with respect to the vertical plane orthogonal to the traveling direction in the plan view, so that the ridge forming portion is formed on the ridge side by the forward traveling. Since the ground ring is pressed against the ground ring, it acts to cancel the reaction force from the conical rotating body side, and the conical rotating body can be pressed against the molding ridge side to form a strong ridge. Therefore, it is possible to provide a ridge forming machine that can easily control the tractor during work and can perform proper ridge coating work.

It is a side view of the state which the ridge forming machine of the Example of this invention is attached to a tractor. It is a top view of the ridge forming machine of the Example of this invention. It is a side view of the ridge forming machine of the Example of this invention. It is a top view of the ground ring of the Example of this invention. It is a side view of the ground contact ring of the Example of this invention.

An embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a side view of a ridge forming machine according to an embodiment of the present invention mounted on a tractor 1, FIG. 2 is a plan view of a ridge forming machine according to an embodiment of the present invention, and FIG. 3 is a ridge forming machine according to an embodiment of the present invention. A side view on the right side in the traveling direction of the machine, FIG. 4 is a plan view of the ground ring 5 of the present invention, and FIG. 5 is a side view of the ground ring 5 of the present invention. In the description of this example, the left side of FIG. 1 will be described as the front side in the work progress direction.

In the ridge forming machine A of this example, a tractor mounting portion connected to a three-point link mechanism behind the tractor 1 and a working portion 70 provided offset laterally from the center of the tractor mounting portion are provided on the front side of the main body frame 7. On the front side of the work part 70, there is an earthen part 2 that excavates the soil of the rice field and the original ridge and raises it on the side and upper surface of the original ridge, and it is located on the rear side of the work part 70 and is horizontal in the direction of travel. A ridge forming portion 3 for compacting the filling raised by the filling portion 2 while rotating by a rotating shaft to form a new ridge on the original ridge is provided.

The front portion of the main body frame 7 constituting the ridge forming machine A is provided with a mounting portion for mounting on the tractor 1 which is a traveling machine. A three-point link mechanism for mounting a work machine is provided on the tractor 1 side at the rear, and the mounted work machine can be connected up and down freely. In the three-point link mechanism, a top link 11 is vertically rotatable at an upper center portion, and a pair of left and right lower links 10 are vertically rotatable below. The ridge forming machine A is mounted via a quick hitch 14, which is a connecting frame connected to the rear ends of the top link 11 and the lower link 10, respectively.

The quick hitch 14 is attached to a three-point link mechanism by connecting the upper center portion with the top link 11 and the top link pin 12 and connecting the lower left and right sides with the lower link 10 by the lower link pin 13. A hook 140 opened upward is provided on the rear side in the upper center portion of the quick hitch 14, and the hook 140 is engaged with a top pin 15 horizontally provided above the center portion on the ridge forming machine A side. .. Further, on the lower left and right portions, a U-shaped groove portion opened to the rear side for engaging with the horizontal lower pins 16 and 16 provided on the ridge forming machine A side, and the engaged lower pins 16 and 16 Fixed hooks 17 and 17 are provided to prevent the hook from coming off.

To connect the tractor 1 and the ridge forming machine A, the hook 140 of the quick hitch 14 attached to the tractor 1 side is engaged with the top pin 15 on the ridge forming machine A side so as to scoop up from below, and the lower pin on the lower side is engaged. 16 and 16 are attracted to the quick hitch 14 side and engaged with the U-shaped groove. Then, the fixing hooks 17 and 17 are used to prevent the hooks from coming off and the hooks are connected. When releasing the connection, the fixed hooks 17 and 17 are released in the reverse order, and when the ridge forming machine A is lowered to the ground surface, the lower pins 16 and 16 are separated rearward and the top pin 15 is further separated from the hook 140. And the connection is released.

Reference numeral 75 is an input axis. The input shaft 75 is located at the lower center of the tractor mounting portion and is provided so as to project forward, and is connected to the PTO shaft (not shown), which is the output shaft of the power on the tractor 1 side, by a universal joint or the like. , The power of the tractor 1 is transmitted to the working portion 70 of the ridge forming machine A via the universal joint 76 connected to the rear of the input shaft 75. The soil filling portion 2 and the ridge forming portion 3 are driven by the transmitted power.

The soil filling portion 2 and the ridge forming portion 3 of the working portion 70 are provided on the rotating end side of the rotating frame 71 that rotates left and right with respect to the main body frame 7 so as to be horizontally rotatable on the tractor to be mounted. The amount of offset to the side can be adjusted.

The soil filling portion 2 has a tilling rotor 22 in which a plurality of excavation claws 20 are radially provided on a rotor shaft which is a horizontal rotation axis and is projected toward the original ridge side, and the soil flipped up by the excavation claw 20 is placed on the original ridge side. A cover body 21 for guiding is provided. The tilling rotor 22 having the excavation claw 20 is rotated by the power from the tractor 1, excavates the soil on the rice field and a part of the original ridge, and flips it up to the original ridge side to fill the soil.

The ridge forming portion 3 located behind the earth filling portion 2 is composed of a cylindrical rotating body 30 that forms the upper surface of the ridge and a conical rotating body 31 that forms the side surface of the ridge, and is a rotation center axis perpendicular to the traveling direction. It rotates faster than the traveling speed around the center, and advances and compacts the filling soil filled by the filling portion 2 while slip-rotating. The conical rotating body 31 has a truncated cone shape that gradually expands in diameter toward the rice field side, and a horizontal cylindrical cylindrical rotating body 30 projects outward from the top side of the conical rotating body 31. It is fixed. The ridge forming portion 3 is driven together with the tilling rotor 22 of the soil filling portion 2 by the power of the tractor 1 input via the input shaft 75.

The surface of the conical rotating body 31 is formed by connecting a plurality of radial divided pieces centered on the central axis of rotation, and the outer peripheral surface of the divided pieces is the distance from the central axis of rotation from the front in the rotation direction. The rear side that increases in an arc shape toward the rear in the rotation direction, and the connecting portion that abuts on the inner surface side of the adjacent split pieces on the front side in the rotation direction, and the distance from the outer peripheral surface from the connecting portion to the rotation center axis is from the front in the rotation direction. It is formed on the front side having an inclined surface that decreases toward the rear in the rotation direction, and the inclination angle of the inclined surface is inclined inward at an angle of 10 to 30 degrees with respect to the tangent line of the rotation diameter, and is behind the divided piece. The rear end in the rotation direction on the side is the outermost peripheral position of the conical rotating body, and a step corresponding to the ridge forming surface of the divided piece adjacent to the rear side in the rotation direction and the plate thickness of the divided piece is formed.

On the rear side of the main body frame 7 provided with a mounting portion for the tractor 1 in the front, a rotating frame 71 that can be horizontally rotated by a vertical rotating shaft is provided extending to the rear side. A working portion 70 is provided at the rear end portion of the rotating frame 71 on the rotating end side so as to be horizontally rotatable by a rotating shaft in the vertical direction. The rotating frame 71 is horizontally rotated by a horizontal rotating cylinder 72 provided over the main body frame 7 and the rotating frame 71, and a parallel link is formed by rods provided on the side of the rotating frame 71. The working unit 70 is translated. As a result, the working unit 70 can be offset to an arbitrary position on the side of the mounted tractor 1.

The conical rotating body 31 of the ridge forming portion 3 is positioned on the right outer side in the traveling direction of the rear side of the transmission frame 74, which is provided so that the rear side can rotate up and down with respect to the main body frame 7 centering on the front side. It is fixed to a drive shaft that protrudes horizontally from the top and is driven to rotate. By rotating the transmission frame 74 in the vertical direction, the vertical position of the soil filling portion 2 located in the front with respect to the tilling rotor 22 can be adjusted, and the height of the molding ridge can be adjusted. The transmission frame 74 is rotated in the vertical direction by expanding and contracting the vertical rotation cylinder 73 provided so as to span the holding frames on the rotation end side and the base end side of the transmission frame 74.

A disk-shaped ground ring 5 whose lower end is inserted into the surface of the field and rotationally moves in the traveling direction is attached to the transmission frame 74 so that its vertical position can be adjusted. The ground ring 5 pierces the surface of the field and receives a force acting in the direction away from the ridges as a reaction force for the conical rotating body 31 to press the soil on which the embankment is filled and to form the ridges. As a result, the phenomenon that the ridge forming machine A is pushed away from the ridge and the tractor 1 cannot go straight in the traveling direction is solved. For this purpose, it is necessary that the ground contact ring 5 is surely pierced into the field scene. Since the ground ring 5 is attached to the transmission frame 74 in which the conical rotating body 31 is held, the ground ring 5 moves integrally even if the height of the conical rotating body 31 is changed. Therefore, the conical rotating body 31 The amount of piercing against is not changed.

The ground ring 5 is provided in the vicinity of the conical rotating body 31 at a position away from the conical rotating body 31 with respect to the ridge to be formed, the conical rotating body 31 side in the left-right direction is flat, and the other side is a truncated cone. It is formed in a shape. Since one side is flat, it is easy to pierce, and the truncated cone-shaped slope acts as a component force on the pierced ground side to receive the lateral reaction force, so the force is dispersed and the sinking is moderate. It can be suppressed and the reaction force can be sufficiently received.

Further, the rotation axis of the ground ring 5 is provided so as to be inclined toward the rear side on the conical rotating body 31 side with respect to the vertical plane orthogonal to the traveling direction in the plan view, that is, the ground ring 5 is shown in FIG. If the working portion 70 is provided at an angle b inclined to the ridge side with respect to the traveling direction in a plan view, the working portion 70 acts to be pressed against the ridge side by the progress, and the conical rotating body 31 is pressed toward the ridge side. Further receives the reaction force from the conical rotating body 31.

The ground ring 5 is rotatably provided on a horizontal rotation axis provided orthogonal to the lower end of a support arm 50 made of a vertical square pipe material. Further, the transmission frame 74 is provided with a U-shaped bracket in a plan view into which the support arm 50 is fitted, and a plurality of horizontal holes capable of overlapping the U-shaped bracket and the support arm 50 are provided in the vertical direction. A fixing pin is inserted into an arbitrary hole to adjust the vertical position of the ground ring 5 and hold it in the transmission frame 74.

A scraper 52 for peeling off the adhering soil is provided on the truncated cone-shaped slope of the ground ring 5. The scraper 52 is held by a scraper holding bracket 51 fixedly provided on the support arm 50 side, and is provided along a truncated cone-shaped slope portion of the ground ring 5 along a plate-shaped end surface portion.

At the time of ridge forming work, the surface of the conical rotating body 31 is brought into contact with the embankment raised by the soil filling portion 2 on the side surface of the inclined original ridge, and the conical rotating body 31 is rotated and advanced to form the embankment. It is compacted to form an inclined surface on the side surface of the new ridge on the side surface of the original ridge. The conical rotating body 31 has the necessary strength and weight to be pressed against the ridges to form the side surfaces of the ridges. Further, the ground ring 5 provided on the opposite side of the conical rotating body 31 to the ridge receives the reaction force for pressing the molded ridge. Further, the scraper 52 provided on the ground ring 5 prevents soil from adhering to the ground ring 5, and the function of the ground ring 5 is continued.

The cylindrical rotating body 30 has a cylindrical shape in the horizontal direction and is attached to the tip end side of the truncated cone of the conical rotating body 31. At the time of ridge forming work, the cylindrical rotating body 30 is rotated with its outer circumference in contact with the embankment on the upper surface of the original ridge to form the upper surface of the new ridge.

The soil filling portion 2 is installed immediately before the ridge forming portion 3 on the tractor side, that is, on the front side in the traveling direction with respect to the ridge forming portion 3. The soil filling portion 2 includes a tilling rotor 22 having a plurality of excavation claws 20 radially attached to a rotating shaft, and a cover body 21. The excavation claws 20 are provided on the rotor shaft by bending their tips toward the ridge inclined surface side. The excavation claw 20 excavates the slope of the original ridge and the hem of the slope of the rice field, and scatters the excavated soil on the side surface and the upper surface of the ridge to form an embankment.

The cover body 21 is provided so as to cover the upper surface of the tilling rotor 22, the base side of the tilling rotor 22 and the rear surface side in the traveling direction, and the excavation claw 20 prevents the excavated soil from scattering and guides the soil to the ridge side. For this reason, the ridge side of the tillage rotor 22 is open.

The excavation claw 20 excavates the slope of the ridge to be excavated and the rice field surface at the lower part of the slope, scatters the soil, and heaps the soil on the original ridge. On the other hand, the conical rotating body 31 of the ridge forming portion 3 is brought into contact with the entire surface inclined surface of the ridge and rotated to form the side inclined surface of the ridge.

INDUSTRIAL APPLICABILITY The present invention is used for a ridge forming machine which is mounted behind a traveling machine such as a tractor and offsets laterally to perform ridge forming work.

1 Tractor 10 Lower link 11 Top link 12 Top link pin 13 Lower link pin 14 Quick hitch (connecting frame)
140 Hook 15 Top pin 16 Lower pin 17 Fixed hook 2 Earth filling part 20 Excavation claw 21 Cover body 22 Tillage rotor 3 Ridge forming part 30 Cylindrical rotating body 31 Conical rotating body 5 Ground ring 50 Support arm 51 Scraper holding bracket 52 Scraper 7 Body frame 70 Working part 71 Rotating frame 72 Horizontal rotating cylinder 73 Vertical rotating cylinder 74 Transmission frame 75 Input shaft 76 Universal joint

Claims (2)

In a ridge forming machine which is provided on a main body frame connected to a traveling vehicle and offsets a working portion to the side of the traveling vehicle to perform ridge forming work.
The working portion is moved along the ridge forming portion, and the soil is scraped up to the ridge forming portion by a tilling rotor to supply the soil to a raised state, and the ridge forming provided behind the soil filling portion in the moving direction. It is a working part that has a part, and the ridge forming part forms a ridge by pressing and passing it while rotating on the ridge forming part where the soil is raised in the earthen part.
The ridge forming portion has a cylindrical rotating body that forms the upper surface of the ridge and a conical rotating body that is attached to one end side of the cylindrical rotating body and forms the side surface of the ridge, and the conical rotating body is the main body. It is provided on the rotating end side of the transmission frame that can rotate in the vertical direction with respect to the frame, and the vertical position can be adjusted with respect to the earthen part.
The transmission frame is provided with a support arm fitted to a U-shaped bracket in a plan view provided by the transmission frame so that the vertical position can be adjusted. The ground ring is provided at a position away from the conical rotating body with respect to the ridge to be formed, and the conical rotating body side in the left-right direction is flat and the other side is truncated cone-shaped. The truncated cone-shaped slope is provided with a scraper for peeling off the adhering soil , and the scraper is held by a scraper holding bracket fixedly provided on the support arm side. Ridge molding machine. The ridge forming machine according to claim 1, wherein the rotation axis of the ground ring is provided so as to be inclined toward the rear side on the conical rotating body side with respect to a vertical surface orthogonal to the traveling direction in a plan view.

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