JP6830680B2 - Ridge coating machine - Google Patents

Description

The present invention relates to a ridge coating machine, and more particularly to a ridge coating machine including a pretreatment portion for cutting and filling old ridges and a ridge coating machine for applying the piled soil on the cut old ridges.

Such a ridge coating machine is attached to a traveling machine such as a tractor and performs ridge painting work at a position offset to the side with respect to the running position of the traveling machine, and cuts old ridges to fill the soil. It is equipped with a pretreatment section and a ridge section where the piled soil is applied to the old ridges that have been cut down.

The pretreatment unit has, for example, cultivating claws provided in a plurality of rows on the outer peripheral surface of the cultivating shaft rotatably supported along the traveling direction of the machine body at a predetermined distance in the axial core direction of the cultivating shaft. By the rotation of the tilling claw, the soil of the old ridge is cultivated and flipped up, and the flipped up soil is supplied to the ridge preparation side.

The tilling claw of the pretreatment portion has a vertical blade portion and a horizontal blade portion that continuously extend from the tilling shaft, the vertical blade portion and the horizontal blade portion are curved in the direction opposite to the rotation direction of the tilling claw, and the horizontal blade portion is It is configured to be curved toward one side of the vertical blade portion. Although this cultivated claw can be crushed well by the vertical blade portion, the cultivated soil cannot be sufficiently brought to the ridge side only by the lateral blade portion curved to the side.

Therefore, as described in Patent Document 1, the applicant applies to the tip of the claw body portion corresponding to the vertical blade portion of the tillage claw provided in the last row among the tillage claws provided in a plurality of rows. We are proposing to provide a plate-shaped scooping plate with a high soil gathering function and to gather the soil crushed by this scooping plate toward the ridge side. Since this scooping plate is formed in a plate shape to bring the scooped soil closer to the ridge side, the soil gathering and landing performance is very good.

However, the scooping plate is liable to be impacted by contact with foreign matter such as stones existing in the cultivated soil, and a large vibration is liable to occur. In addition, if the power transmission mechanism is provided with shear bolts so that the power transmission mechanism that transmits power to the pretreatment unit is not damaged when an overload acts on the scoop plate, the scoop plate will be overloaded. When it acts, the shear bolt breaks and damage to the power transmission mechanism can be prevented, but the ridge coating work is interrupted.

Therefore, instead of the tilling claw provided with the scooping plate, it has been proposed to use a claw in which the tip portion of the lateral blade portion of the tilling claw bends in a direction substantially perpendicular to the front side in the traveling direction of the tilling claw. By using this machete, it is less likely to be impacted by foreign matter, less likely to generate large vibrations, and the situation where the shear bolt breaks is suppressed.

JP-A-2010-187587

The vertical blade portion continuously extending from the attachment base portion of the twill claw extends along the surface of the rear plate portion arranged on the rear side of the cover body covering the twill claw. For this reason, when soil adheres to the inner surface of the rear plate portion, the machete and the holder to which the machete is attached come into contact with the soil adhering to the cover body as the machete rotates, and the machete and the holder There is a risk of wear.

The present invention has been made to solve such a problem, and there is no possibility that the tilling claw and the holder holding the tilling claw are worn by contact with the soil adhering to the inner surface of the cover body covering the pretreatment portion. The purpose is to provide a ridge coating machine.

In order to achieve the above object, the ridge coating machine of the present invention is mounted on a traveling machine, is arranged at a position offset laterally with respect to the running position of the traveling machine, and is a pretreatment for cutting old ridges and filling the soil. In the ridge coating machine, which is equipped with a part and a ridge-adjusting part that coats the piled soil on the old ridges that have been cut down, and performs the ridge coating work as the traveling machine travels, the pretreatment part is relative to the traveling direction of the traveling machine. The tillage shaft that extends in the front-rear direction and is rotatably supported has a tillage claw that is provided in a plurality of rows at a predetermined interval in the axial core direction and rotates together with the tillage shaft, and the tillage claw is continuous from this mounting base. It has a vertical blade portion and a horizontal blade portion that extend in the direction of rotation of the tillage shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade portion is curved to one side with respect to the vertical blade portion. However, among the tillage claws provided in multiple rows, the lateral blade portion of the tillage claw provided in the last row bends toward the front side in the axial direction of the tillage axis, and the tillage claw in the last row has the tillage claw. It is characterized in that it covers one side of the mounting portion to which the mounting base is mounted in the direction of rotation of the tillage claw, and is provided with a soil removing member extending from the mounting base to the vertical blade side.

Further, the soil removing member of the present invention is characterized by having a width equal to or larger than the thickness of the mounting portion.

Further, the soil removing member of the present invention is characterized in that it covers the front side of the mounting portion in the rotation direction of the tilling claw and extends from the mounting base along the blade edge of the vertical blade portion.

Further, the soil removing member of the present invention is characterized in that it covers the rear side of the mounting portion in the rotation direction of the tilling claw and extends from the mounting base along the peak edge of the vertical blade portion.

Further, the back surface of the vertical blade portion and the horizontal blade portion on the rear side in the traveling direction of the last row of tillage claws of the present invention is coated with an abrasion-resistant metal layer along the extending direction of the vertical blade portion and the horizontal blade portion. It is characterized by being.

Further, the pretreatment portion of the present invention has a cover body surrounding the circumference of the tillage claw, and the soil removing member is a cover in which the surface on the rear side in the traveling direction of the tilling claw covers the rear side in the traveling direction of the last row of the tilling claw. It is characterized in that it is arranged facing the rear plate portion of the body.

Further, the cover body of the present invention is characterized in that the upper and side covering portions in the rotation locus of the tillage claw are formed in a tapered shape whose diameter becomes smaller toward the front.

Further, the soil removing member of the present invention is characterized in that it is detachably provided on the mounting portion.

Further, the radius of gyration of the tip of the cultivated claw in the last row of the present invention is larger than the radius of gyration of the cultivated claw in other rows other than the last row.

Further, the tillage axis of the pretreatment section of the present invention is characterized in that the front side is inclined to the old ridge side with respect to the rear side in a plan view.

According to the ridge coating machine according to the present invention, the ridges having the above-mentioned characteristics do not cause the tilling claws and the holder holding the ridges to be worn by contact with the soil adhering to the inner surface of the cover body covering the pretreatment portion. A coating machine can be provided.

The plan view of the ridge coating machine which concerns on one Embodiment of this invention is shown. The left side view of the ridge coating machine is shown. The front view of the ridge coating machine is shown. A pretreatment section provided with a soil removing member is shown, FIG. 3A is a side view of the pretreatment section, and FIG. 3B is a front view of the pretreatment section. The soil removing member is shown, FIG. 3A is a plan view of the soil removing member, FIG. 3B is a front view of the soil removing member, and FIG. 3C is a left side view of the soil removing member. The figure (d) is a right side view of the soil removing member. A part of the pretreatment section provided with the soil removing member according to another embodiment is shown, FIG. 3A is a partial side view of the pretreatment section, and FIG. 3B is a partial front view of the pretreatment section. It is a figure. The soil removing member according to another embodiment is shown, FIG. 3A is a plan view of the soil removing member, FIG. 3B is a front view of the soil removing member, and FIG. 3C is a soil removing member. It is a side view of a member. The front view of the pretreatment part provided with the soil removal member which concerns on another embodiment is shown. The soil removing member according to another embodiment is shown, FIG. 3A is a front view of the soil removing member, FIG. 3B is a bottom view of the soil removing member, and FIG. 3C is a soil removing member. It is a left side view of a member, and FIG. 3D is a right side view of a soil removal member.

Hereinafter, the best embodiment of the ridge coating machine according to the present invention will be described with reference to FIGS. 1 to 9. There are various types of ridge coating machines, and among them, the ridge coating machine that can continuously perform the ridge coating work to the corners of the field as the traveling machine travels is taken as an example. , Will be described below.

As shown in FIG. 1 (plan view), the ridge coating machine 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear of the traveling machine body 90, and is connected to the traveling machine body 90 as it travels forward. The ridge coating work is performed. The ridge coating machine 1 is mounted on the traveling machine body 90 and has an input shaft 3 for inputting power from the traveling machine body 90, and the mounting portion 10 is provided with an offset cylinder 4 provided on the mounting portion 10. An offset mechanism portion 20 that can move in the width direction of the ridge coating machine 1 (hereinafter referred to as "left-right direction") and a rotation fulcrum extending in a direction perpendicular to the moving end side (rear end side) of the offset mechanism portion 20. O is provided, and is arranged so as to be rotatable in the horizontal direction with the rotation fulcrum O as the center of rotation, and is offset laterally with respect to the traveling position of the traveling machine body 90 by the power transmitted from the input shaft 3. It has a working unit 50 for performing work.

The mounting portion 10 includes a hitch frame 11 extending in the left-right direction and a connecting frame (not shown) that is attached to the front side of the hitch frame 11 and can be connected to the three-point link connecting mechanism of the traveling machine body 90.

The offset mechanism portion 20 has an offset frame 21 whose front end side is rotatably connected to the hitch frame 11 and extends to the rear side, and an offset frame 21 which is arranged side by side along the right side of the offset frame 21 and whose front end side is the right end portion of the hitch frame 11. It has a link member 25 rotatably connected to the link member 25. The rear end portion of the link member 25 is rotatably connected to a connecting member 23 rotatably provided at the rear end portion of the offset frame 21. The offset mechanism unit 20 constitutes a parallel link mechanism with an offset frame 21, a link member 25, a hitch frame 11, and a connecting member 23.

The offset frame 21 can be moved in the left-right direction by the expansion / contraction operation of the offset cylinder 4 pivotally connected between the rear end portion and the left end portion of the hitch frame 11. A power transmission mechanism is provided in the offset frame 21. This power transmission mechanism is a chain transmission mechanism, and includes a driven shaft 29 rotatably arranged coaxially with the rotation fulcrum O of the working portion 50 on the rear end side of the offset frame 21, and the traveling machine body 90. The power transmitted from the input shaft 3 to the driven shaft 29 can be transmitted to the driven shaft 29.

A main shaft 7 arranged coaxially with the driven shaft 29 and extending downward is connected to the lower portion of the driven shaft 29. The spindle 7 rotates with the rotational movement of the driven shaft 29, and can transmit power to the working unit 50. A spindle case 30 (see FIG. 2) that covers the spindle 7 is disposed on the outside of the spindle 7, and the upper end of the spindle case 30 is rotatably connected to the lower rear end of the offset frame 21 so that the spindle case 30 is connected. The working portion 50 is attached to the lower end portion of the above in a fixed state.

The working unit 50 can be rotated with respect to the rotation fulcrum O by the expansion and contraction of the expansion / contraction cylinder 41 connected between the support frame 32 connected to the connecting member 23 and the spindle case 30. Is. Further, when the expansion and contraction of the telescopic cylinder 41 is restricted, the work unit 50 is held so that the work direction of the work unit 50 is parallel to the traveling direction A of the traveling machine body 90 even if the offset mechanism unit 20 moves in the left-right direction. To.

One end of the support frame 32 is connected to the spindle case 30, and the other end extends above the pretreatment power transmission case 31 that transmits power to the pretreatment portion 61 of the work portion 50 along the support frame. The tip portion of 32 is connected to a cover body 70 that covers the pretreatment portion 61.

Although the details will be described later, the working unit 50 includes a heaven processing unit 51 that cuts off the upper part of the old ridge formed along the periphery of the field, a pretreatment unit 61 that fills the cut soil, and the piled soil. It has a ridge portion 80 and a ridge portion 80 to be applied on the old ridge that has been cut down.

First, the ridge portion 80 will be described. The ridge portion 80 includes a polyhedral drum 82 attached to a rotating shaft 81 extending in the left-right direction and rotatably supported, and a cylindrical portion 83 attached to the right end of the polyhedral drum 82 and extending in the lateral direction. Have. The ridge adjustment portion 80 is connected to and supported by the spindle case 30 via the ridge adjustment power transmission case 87. A power transmission mechanism on the ridge side (not shown) is built in the ridge power transmission case 87, and the power transmission mechanism on the ridge side is connected to the spindle 7 so that the power from the spindle 7 can be transmitted to the ridge portion 80. Has been done.

The pretreatment unit 61 is supported by the spindle case 30 via the pretreatment power transmission case 31. A pretreatment side power transmission mechanism (not shown) is built in the pretreatment power transmission case 31, and the pretreatment side power transmission mechanism is connected to the main shaft 7 so that the power from the main shaft 7 can be transmitted to the pretreatment unit 61. It is configured. The details of the pretreatment unit 61 will be described later.

As shown in FIGS. 1 and 3, the heavenly processing unit 51 is supported by the preprocessing unit 61 via the heavenly field power transmission case 54. A plurality of tilling claws 53 are radially attached to the rotating shaft 52 of the heaven processing unit 51, and the rotating shaft 52 of the heaven processing unit 51 is arranged so as to be inclined toward the old ridge K side in a plan view. A power transmission mechanism (not shown) is provided in the heavenly power transmission case 54, and this power transmission mechanism is connected to a tillage shaft 62 (see FIG. 4A) of the pretreatment unit 61 to generate power from the pretreatment unit 61. Can be transmitted to the heaven processing unit 51.

The heavenly field power transmission case 54 is arranged on the rear side in the traveling direction of the heavenly field processing unit 51 and extends in a direction orthogonal to the rotation axis 52 of the heavenly field processing unit 51. One end of the heavenly power transmission case 54 in the longitudinal direction is rotatably attached to the tip of the tillage shaft 62 of the pretreatment portion 61. Therefore, the heavenly power transmission case 54 is rotatable in the vertical direction with one end thereof as the center of rotation. The top / bottom processing unit 51 can adjust the vertical position via the vertical position adjusting mechanism unit 55 provided between the top / bottom processing unit 51 and the support frame 32.

Next, the pretreatment unit 61 will be described. As shown in FIGS. 3, 4 (a), and 4 (b), the pretreatment unit 61 includes the above-mentioned tillage shaft 62 and a plurality of pretreatment portions 61 that are radially attached to the outer periphery of the tillage shaft 62 and rotate together with the tillage shaft 62. It has 63, 64, and 65 tillage claws. When the tip of the tillage claws 63, 64, 65 is at a position facing the old ridge K (see FIG. 4B), the pretreatment portion 61 moves from the upper part to the lower side of the old ridge K. It rotates in the X direction of the moving arrow, that is, in the downcut direction (see FIG. 4B).

The tilling claws 63, 64, 65 are arranged in three rows with a predetermined distance from the front side to the rear side in the axial direction of the tilling shaft 62, and each row has a phase difference of 180 degrees in the circumferential direction of the tilling shaft 62. It has two and is attached. The tillage claws 63, 64, 65 are detachably attached to a holder 66 provided on the tillage shaft 62 via a fastening means such as a bolt 67.

The holder 66 is fixed to the side surface 68a of the mounting plate 68 mounted in a state of extending in a direction substantially orthogonal to the tillage shaft 62. The holder 66 has an insertion hole for inserting the mounting bases 63a, 64a, 65a of the tillage claws 63, 64, 65, and also has a mounting hole for passing the shaft of the bolt 67. The mounting plate 68 is formed in a polygonal shape in a side view, and is formed axisymmetrically with the tillage shaft 62 as the center.

As shown in FIG. 4B, the tilling claws 63, 64, 65 have vertical blade portions 63b, 64b, 65b and horizontal blade portions 63c, which extend continuously from the mounting base portions 63a, 64a, 65a attached to the holder 66. It has 64c, 65c and bends in the direction opposite to the rotation direction from the vertical blade portions 63b, 64b, 65b to the horizontal blade portions 63c, 64c, 65c, and the horizontal blade portions 63c, 64c, 65c have the vertical blade portions 63b, 64b. , 65b is curved to one side to form rake faces 63d, 64d, 65d inward. The vertical blade portions 63b, 64b, 65b extend in a direction substantially orthogonal to the tillage axis 62 (see FIG. 4A). Each of the vertical blade portions 63b, 64b, 65b and the horizontal blade portions 63c, 64c, 65c of the tilling claws 63, 64, 65 has a blade edge portion having a substantially constant width, and the blade edge portion has a substantially constant width. It is a single blade.

Of the tilling claws 63, 64, 65 arranged in three rows from the front side to the rear side of the tilling shaft 62, the tips of the lateral blade portions 63c, 64c of the tilling claws 63, 64 in the first and second rows. The side is bent rearward in the axial direction of the tillage shaft 62, and the tip end side of the lateral blade portion 65c of the tillage claw 65 in the third row is bent forward in the axial core direction of the tillage shaft 62. Further, the radius of gyration R3 of the cultivated claw 65 in the third row (see FIG. 4B) is configured to have a larger diameter than the radius of gyration R2 of the cultivated claw 64 in the second row, and the cultivated claw 64 in the second row. The turning radius R2 is configured to have a larger diameter than the turning radius R1 of the tilling claw 63 in the first row. That is, the turning radius R3 of the tilling claw 65 in the third row has the maximum turning radius as compared with the turning radius of the tilling claw 63 in the first row and the tilling claw 64 in the second row.

As shown in FIG. 1, when the work unit 50 moves to the work position Pa where the side ridge coating work of the traveling machine body 90 is possible, the front side of the tillage shaft 62 is rearward. It becomes a state of being inclined to the old ridge K side with respect to the side.

As shown in FIG. 4B, when the pretreatment section 61 advances while the tilling shaft 62 rotates in the direction of arrow X, the pretreatment section 61 configured in this way has the first row of tilling claws 63, The vertical blades 63b, 64b, 65b of the second row tillage claw 64 and the third row tillage claw 65 plunge into the soil to cut the soil, and the horizontal blade portions 63c, 64c, 65c plunge into the soil. Then cut the soil and cultivate it. The cultivated soil is held by the rake faces 63d, 64d, 64d of the lateral blades 63c, 64c, 65c of the first row of tillage claws 63, the second row of tillage claws 64 and the third row of tillage claws 65. After being pulled out of the soil, it is guided along the inner surface of the cover body 70 provided in the pretreatment section 61, which will be described later, and is released to the old ridge side and supplied to the ridge preparation section 80 (see FIG. 1). To.

The first row of tillage claws 63 and the second row of tillage claws 64 have radius of gyration R1 and R2 smaller than the radius of gyration R3 of the third row of tillage claws 65 arranged in the last row in the axial direction of the tillage shaft 62. Since it is configured to have, the tilling resistance at the time of the ridge coating work is surely dispersed, the tilling vibration can be made relatively small, and the stable ridge coating work can be performed.

Further, these tilling claws 63, 64, 65 have vertical blade portions 63b, 64b, 65b and horizontal blade portions 63c, 64c, 65c extending continuously from the mounting base portions 63a, 64a, 65a, and the vertical blade portions 63b. , 64b, 65b to the horizontal blades 63c, 49c, 650c in the direction opposite to the rotation direction, and the horizontal blades 63c, 64c, 65c bend to one side with respect to the vertical blades 63b, 64b, 65b. Since it is structured in a shape, it makes it easier for foreign matter such as stones to escape, so it is less susceptible to impact. Therefore, even if a foreign substance such as a stone comes into contact with these tillage claws 63, 64, 65, these tillage claws 63, 64, 65 are less likely to receive an impact, so that the generation of large vibration can be prevented.

Further, in these tilling claws 63, 64, 65, since the tilling shaft 62 is inclined toward the old ridge K in a plan view, the soil is cut diagonally with respect to the old ridge K and the soil is moved in that direction. Therefore, the direction of the soil flow can be directed to the ridge side. Therefore, foreign matter such as stones can easily escape and the risk of overload is small, and the flow of soil supplied to the ridge 80 becomes smooth, so that stable ridge coating work can be performed.

As shown in FIGS. 4 (a) and 4 (b), the tilling claw 65 in the third row covers the front side of the holder 66 to which the mounting base 65a is mounted in the rotation direction of the tilling claw and is mounted. A soil removing member 75 extending from the base portion 65a along the vertical blade portion 65b is provided. The soil removing member 75 removes soil adhering to the inner surface of the rear plate portion 71 of the cover body 70, which will be described later, which is arranged so as to face the vertical blade portion 65b of the tilling claw 65 in the third row.

The soil removing member 75 is formed by bending a sheet metal or the like, covers the front side of the holder 66 in the rotation direction of the tillage claw, and has a width larger than the thickness of the holder 66 (the length in the direction of the tillage axis). It extends from the mounting base 65a of 65 along the edge of the vertical blade 65b. As shown in FIGS. 4 (b), 5 (a), 5 (b), 5 (c), and 5 (d), the soil removing member 75 includes the side plate portion 76 and the ends of the side plate portion 76. It has a front plate portion 77 that bends and extends from the portion.

The side plate portion 76 is formed in a flat plate shape, and extends from one end of the side plate base 76a covering the front surface of the holder 66 and one end of the side plate base 76a so as to bend, and covers the abdomen of the vertical blade portion 65b of the tillage claw 65. It has a portion 76b. The side plate base portion 76a is formed in a substantially rectangular shape in the front view, has a width larger than the width of the holder 66, and further extends from one side end portion in the width direction of the holder 66 to the other side end portion. It extends beyond the front end of 68 in the direction of rotation. A hole 76a1 for passing a bolt is provided at one edge of the side plate base portion 76a.

The side plate tip portion 76b extends to a position on the base end side of the vertical blade portion 65 so as to cover the mounting base portion 65a side, and the length of the tilling claw 65 is half of the total length of the claw. The length of the side plate tip portion 76b is set to about half of the total length of the claw without extending to the tip portion of the tilling claw 65, because the amount of soil supplied to the tilling claw 65 decreases as the ridge coating machine 1 advances. This is to prevent.

The front plate portion 77 is connected to one end in the width direction of the side plate base 76a and extends in a direction substantially orthogonal to the side plate base 76a, and is connected to one end in the width direction of the side plate tip 76b. It has a front plate tip portion 77b extending in a direction substantially orthogonal to 76b. The front plate base portion 77a and the front plate tip portion 77b are formed in a substantially rectangular shape in a side view (see FIG. 5D). The width of the front plate base 77a has a dimension larger than the width of the holder 66. The front plate base 77a extends from the front surface of the holder 66 in the traveling direction to the rear surface, further extends beyond the mounting plate 68 to a position near the inner surface of the rear plate 71 of the cover 70 (FIG. 4 (FIG. 4). a) See). The end surface 77a2 of the front plate base portion 77a on the rear plate portion 71 side of the cover body 70 extends linearly and is arranged to face the rear plate portion 71 with a predetermined gap 78. Therefore, when the pretreatment portion 61 rotates, the front plate base 77a can rotate without contacting the rear plate 71 of the cover body 70, and the front plate base 77a removes the soil adhering to the rear plate 71. can do.

The width of the front plate tip portion 77b has substantially the same dimensions as the width of the front plate base portion 77a, and is larger than the width of the holder 66. The front plate tip portion 77b extends from the front side surface in the traveling direction of the holder 66 to the rear side surface, further extends beyond the mounting plate 68 to a position near the inner surface of the rear plate portion 71 of the cover body 70. The end surface 77b2 of the front plate front portion 77b on the rear plate portion 71 side of the cover body 70 extends linearly and is arranged to face the rear plate portion 71 with a predetermined gap 78. Therefore, when the pretreatment portion 61 rotates, the front plate front portion 77b can rotate without contacting the rear plate portion 71 of the cover body 70, and the soil adhered to the rear plate portion 71 by the front plate front portion 77b. Can be removed.

A positioning plate 79 that facilitates positioning when the soil removing member 75 is mounted on the holder 66 is attached to the inner surface of the front plate base portion 77a on the front plate tip portion 77b side (FIGS. 5A and 5). (C). The positioning plate 79 is formed in a rectangular shape in a side view, extends substantially parallel to the side plate base portion 76a, and is arranged so that the tilling claw 65 is located between the positioning plate 79 and the side plate base portion 76a.

As shown in FIGS. 4A and 4B, the tilling claw 65 of the pretreatment section 61 to which the soil removing member 75 is attached is located on the rear side thereof and on the side opposite to the old ridge K side. The side extending from the upper part to the side part and the front side thereof are covered with the cover body 70. The cover body 70 is connected to the front plate portion 72 and the rear plate portion 71 that cover the front side and the rear side of the tilling claws 63, 64, 65 of the pretreatment portion 61, and the front plate portion 72 and the rear plate portion 71 for tilling. It has an arc-shaped plate portion 73 that covers the side portions of the claws 63, 64, 65 from the upper outer periphery to the side opposite to the old ridge K side.

The front plate portion 72 extends from the upper part of the rotation locus to the side opposite to the old ridge side in an arc band shape along the peripheral portion on the front side of the rotation locus of these tillage claws 63, 64, 65, and the lower portion of the front plate portion 72. Is located below the tillage shaft 62. The rear plate portion 71 is formed so as to extend in a fan shape from the upper part on the rear side of the rotation locus of these tillage claws 63, 64, 65 and opposite to the old ridge side to a position below the tillage shaft 62. There is.

The arcuate plate portion 73 is connected between the front plate portion 72 and each peripheral edge portion of the rear plate portion 71, and is substantially directly above the tillage shaft 62 along the outside of the rotation locus of the tillage claws 63, 64, 65. It extends from the side opposite to the old ridge side to a position below the tillage shaft 62. Further, the arcuate plate portion 73 is inclined toward the tillage shaft 62 side from the rear side to the front side. Therefore, when the pretreatment portion 61 rotates, the soil conveyed by the tilling claws 63, 64, 65 moves upward along the inner surface of the arcuate plate portion 73, and the end on the old ridge side of the arcuate plate portion 73. Is released from.

The arcuate plate portion 73 is provided along the extending direction of the virtual line Ls connecting the outer circumferences of the rotation loci of the tilling claws 63 in the first row and the tilling claws 65 in the third row (FIG. 4A). reference). Therefore, the space between the rotation loci of these tillage claws 63, 64, 65 and the inner surface of the arcuate plate portion 73 can be narrowed, and the amount of soil deposited on the inner surface side of the inclined cover 73d can be reduced. Can be done.

Next, a method of attaching the soil removing member 75 to the holder 66 will be described. First, the bolt 67 for fixing the tillage claw 65 in the third row is removed from the holder 66. The tillage claw 65 from which the bolt 67 has been removed is maintained in the state of being inserted into the holder 66. With the side plate portion 76 of the soil removing member 75 facing forward, the soil removing member 75 is moved to the holder side so that the holder 66 is located between the positioning plate 79 and the side plate portion 76.

When the soil removing member 75 is moved so as to insert the holder 66 between the positioning plate 79 and the side plate portion 76, the soil is removed so that the hole portion 76a1 of the soil removing member 75 and the insertion hole portion of the holder 66 communicate with each other. Adjust the position of the member 75. Further, the position of the soil removing member 75 is adjusted so that the blade portion of the vertical blade portion 65b of the tillage claw 65 comes into contact with the inner surface of the front plate tip portion 77b. Then, the bolt 67 is inserted from the rear plate portion 71 side of the holder 66 via the mounting plate 68 so that the head of the bolt 67 is located on the rear plate portion 71 side of the cover body 70. Then, a nut 69 is screwed into the shaft portion of the bolt 67 extending from the side plate portion 76 of the soil removing member 75 via the holder 66, and the soil removing member 75 is fastened to the holder 66 to form the soil removing member 75. It is attached to the holder 66.

Next, the operation of the soil removing member 75 when the ridge coating operation is performed by the ridge coating machine 1 configured in this way will be described with reference to FIGS. 1, 4 (a) and 4 (b). During the ridge coating work by the ridge coating machine 1, as shown in FIGS. 1 and 4 (b), the soil in the field is cultivated by the tilling claws 63, 64, 65 of the pretreatment section 61 and released to the old ridge K side. Will be done. The released soil is smeared on the old ridges by the ridge 80 (see FIG. 1) to form shaped new ridges.

By the way, when the ridge coating machine 1 advances, soil is pressed against and adheres to the inner surface of the rear plate portion 71 arranged on the rear side in the traveling direction of the cover body 70 covering the pretreatment portion 61. The adhered soil comes into contact with the tilling claw 65 in the third row and the holder 66 holding the tilling claw 65, and the tilling claw 65 and the holder 66 in the third row are easily worn.

However, since the above-mentioned soil removing member 75 is attached to the holder 66 that holds the tilling claw 65 in the third row, as shown in FIG. 4A, the soil removing member 75 is used to attach the soil removing member 75 to the rear plate portion 71. The attached soil S can be removed. That is, the soil S adhering to the rear plate portion 71 can be peeled off and removed by the front plate base portion 77a and the front plate tip portion 77b of the front plate portion 77. Therefore, it is possible to reduce the amount of soil S adhering to the rear plate portion 71 during the tilling work, and prevent the situation where the tilling claw 65 in the third row and the holder 66 holding the tilling claw 65 are worn and damaged. Can be done.

In the above-described embodiment, the soil removing member 75 has a side plate portion 76 having a length of about half the total length of the tilling claw 65, but the side plate portion 76 has a length of the tilling claw 65. It may have substantially the same length as the total length. As shown in FIGS. 6 (a) and 6 (b), the soil removing member 100 covers the rear side of the holder 66 to which the tilling claw 65 is attached in the third row in the rotation direction of the tilling claw, and also attaches the tilling claw 65. It extends from the base portion 65a along the peak edges of the vertical blade portion 65b and the horizontal blade portion 65c.

The soil removing member 100 will be described by further adding FIGS. 7 (a), 7 (b), and 7 (c). The soil removing member 100 is formed by bending a sheet metal or the like, and has a back plate base 101 and a back plate base 101. It has a back plate tip 105 that bends and extends from the end of the.

The back plate base 101 is formed in a substantially rectangular shape in a plan view (see FIG. 7A), and the width of the back plate base 101 has a dimension larger than the width of the holder 66 (see FIG. 6B). There is. The back plate base 101 extends from one side end in the width direction of the holder 66 beyond the other end and further extends beyond the rear end in the rotation direction of the mounting plate 68. The end surface 101a of the back plate base 101 on the mounting plate 68 side extends linearly and is arranged to face the inner surface of the rear plate 71 of the cover body 70 in parallel with a predetermined distance (see FIG. 6A). ). Therefore, when the tilling claw 65 in the third row rotates, the tilling claw 65 does not come into contact with the inner surface of the rear plate portion 71, but rather on the inner surface of the rear plate portion 71 facing the rotation region of the holder 66 by the back plate base 101. Adhering soil can be removed. Therefore, it is possible to prevent the holder 66 from coming into contact with the soil and causing the holder 66 to wear and be damaged.

A fixing plate 102 for fixing the soil removing member 100 to the holder 66 is provided on the front side of the back plate base 101 in the rotation direction so as to project. A hole 102a for passing the bolt 67 is provided at the edge of the fixing plate 102.

On the other hand, the back plate tip portion 105 is formed in a substantially rectangular shape in a side view (see FIG. 7C), one side in the lateral direction is formed in a straight line, and the other side is one side. It is curved to the side in a concave shape. The length h in the lateral direction of one end of the back plate tip 105 in the longitudinal direction has substantially the same dimension as the tip bending height from the base end to the tip of the lateral blade portion 65c of the tillage claw 65.

The back plate tip portion 105 is provided so as to extend along the peak edge of the tilling claw 65 in the third row and extend in a direction substantially orthogonal to the vertical blade portion 65b and the horizontal blade portion 65c. Further, the end surface 105a extending linearly on one side of the back plate front portion 105 in the lateral direction is arranged to face the inner surface of the rear plate portion 71 of the cover body 70 in parallel with a predetermined distance (FIG. 6 (FIG. 6). a) See). Therefore, when the tilling claw 65 in the third row rotates, the soil adhering to the rear plate portion 71 can be removed by the back plate tip portion 105 without the tilling claw 65 coming into contact with the inner surface of the rear plate portion 71. .. Further, since the back plate tip 105 extends from the base of the vertical blade 65b of the tilling claw 65 to the tip of the horizontal blade 65c, the tilling claw 65 of the soil adhering to the rear plate 71 It is possible to remove the soil corresponding to almost all the regions of rotation of the. Therefore, it is possible to reliably prevent the soil adhering to the rear plate portion 71 from coming into contact with the tilling claw 65 and being worn.

Further, in the above-described embodiment, the soil removing member 75 is formed so as to extend along the blade edge of the vertical blade portion 65b of the tillage claw 65, but as shown in FIG. 8, the vertical blade portion The soil removing member 110 extending to the periphery of the base end portion of the blade edge 65e of 65b may be used.

The soil removing member 110 is formed by bending a sheet metal or the like, covers the front side of the holder 66 in the rotation direction of the tilling claw, and has a width larger than the thickness of the holder 66 (length in the tilling axial direction) and is cultivated. It extends from the mounting base portion 65a of the claw 65 to the periphery of the base end portion of the blade edge of the vertical blade portion 65b. As shown in FIGS. 8, 9 (a), 9 (b), 9 (c), and 9 (d), the soil removing member 110 is bent from the side plate portion 111 and the end portions of the side plate portion 111. It has a front plate portion 115 extending thereafter.

The side plate portion 111 is formed in a flat plate shape, and extends from one side end in the width direction of the holder 66 to a position beyond the other end and further beyond the front end in the rotation direction of the mounting plate 68. A hole 111a for passing a bolt is provided on one edge of the side plate 111.

The front plate portion 115 is connected to one end in the width direction of the side plate portion 111 and extends in a direction substantially orthogonal to the side plate portion 111 to cover the front side in the rotation direction of the holder, and the base end of the blade edge 65e of the vertical blade portion 65b. It extends to the vicinity of the part. The width of the front plate portion 115 has a dimension larger than the width of the holder 66.

The front plate portion 115 extends from the front surface in the traveling direction of the holder 66 to the rear surface, and further exceeds the mounting plate 68, and is located near the inner surface of the rear plate portion 71 of the cover body 70 (see FIG. 4A). Extends to. The end surface 115a of the front plate portion 115 on the rear plate portion 71 side of the cover body 70 extends linearly and is arranged to face the rear plate portion 71 with a predetermined gap. Therefore, when the pretreatment portion 61 rotates, the front plate portion 115 can rotate without contacting the rear plate portion 71 of the cover body 70, and the front plate portion 115 removes the soil adhering to the rear plate portion 71. can do.

Since the front plate portion 115 of the soil removing member 110 extends only to the vicinity of the base end portion of the blade edge 65e of the vertical blade portion 65b, it faces the back surface of the vertical blade portion 65b and the horizontal blade portion 65c of the tillage claw 65. It is not possible to remove the soil adhering to the rear plate portion 71 of the cover body 70. Therefore, the soil adhering to the rear plate portion 71 comes into contact with the back surfaces of the vertical blade portion 65b and the horizontal blade portion 65c of the tilling claw 65 in the third row, and causes the vertical blade portion 65b and the horizontal blade portion 65c of the tilling claw 65 to come into contact with each other. There is a risk of wear.

Therefore, on the back surface of the vertical blade portion 65b and the horizontal blade portion 65c on the rear side in the traveling direction of the tilling claw 65 in the third row, the wear-resistant metal layer 116 is formed along the stretching direction of the vertical blade portion 65b and the horizontal blade portion 65c. Is covered. The wear-resistant metal layer 116 is formed by spraying or welding a cemented carbide, a wear-resistant ceramic, or the like.

As a result, the wear resistance of the vertical blade portion 65b and the horizontal blade portion 65c of the tilling claw 65 in the third row is improved, and the tilling claw 65 in the third row is attached to the soil attached to the rear plate portion 71 of the cover body 70. It does not wear easily even if it comes into contact.

1 Ridge coating machine 61 Pretreatment part 62 Tillage shaft 63, 64, 65 Tillage claw 63a, 64a, 65a Mounting base 63b, 64b, 65b Vertical blade part 63c, 64c, 65c Horizontal blade part 70 Cover body 71 Rear plate part 75, 100, 110 Soil removal member 80 Ridge part 90 Traveling machine 116 Abrasion resistant metal layer K Old ridge

Claims (8)

It is attached to the traveling machine and is placed at a position offset to the side with respect to the running position of the traveling machine, and the pretreatment part for cutting and filling the old ridges and the piled soil are applied on the cut old ridges. In a ridge coating machine provided with a ridge adjusting portion and progressing with the traveling of the traveling machine to perform ridge coating work.
The pretreatment section is provided in a plurality of rows of tillage shafts extending in the front-rear direction with respect to the traveling direction of the traveling machine and rotatably supported by the tillage shafts at predetermined intervals in the axis direction, and the tillage shafts rotate together with the tillage shafts. Have a claw,
The tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the mounting base portion, and bends from the vertical blade portion to the horizontal blade portion in the direction opposite to the rotation direction of the tilling shaft, and also in the lateral direction. The blade part bends to one side with respect to the vertical blade part,
The pretreatment section has a cover body that surrounds the tillage claw.
Of the tilling claws provided in a plurality of rows, the lateral blade portion of the tilling claw provided in the last row is bent toward the front side in the axial direction of the tilling shaft.
The vertical blade portion of the last row of tillage claws is arranged along the rear plate portion of the cover body that covers the rear side of the last row of tillage claws in the traveling direction.
The last row of tillage claws covers the front side of the tillage claw rotation direction of the attachment portion to which the attachment base portion of the tillage claw is mounted, and at least the base end portion of the blade edge of the vertical blade portion from the attachment base portion. A soil removal member that extends to the periphery is provided,
The soil removing member has a side plate portion and a front plate portion that bends and extends from an end portion of the side plate portion, and the front plate portion includes a base portion and the base portion along a blade edge of the vertical blade portion. A ridge coating machine characterized by having a tip portion extending so as to bend from the end portion of the blade to at least the periphery of the base end portion of the blade edge of the vertical blade portion . The ridge coating machine according to claim 1 , wherein the soil removing member has a width equal to or larger than the thickness of the mounting portion. The back surface of the vertical blade portion and the horizontal blade portion of the last row of tillage claws on the rear side in the traveling direction is coated with an abrasion-resistant metal layer along the extending direction of the vertical blade portion and the horizontal blade portion. The ridge coating machine according to claim 1 or 2 . The soil removing member is characterized in that the surface on the rear side in the traveling direction of the tilling claw is arranged facing the rear plate portion of the cover body covering the rear side in the traveling direction of the last row of tilling claws. The ridge coating machine according to any one of claims 1 to 3 . The ridge coating machine according to claim 4 , wherein the cover body has a tapered portion whose diameter becomes smaller toward the front in a portion covering the upper side and the side in the rotation locus of the tilling claw. The ridge coating machine according to any one of claims 1 to 5 , wherein the soil removing member is detachably provided on the mounting portion. Any of claims 1 to 6 , wherein the turning radius of the tip of the tilling claw in the last row has a turning radius larger than the turning radius of the tilling claw in the other row other than the last row. The ridge coating machine described in Kaichi. The cultivating axis of the pretreatment unit is according to any one of claims 1 to 7 , wherein the front side of the cultivating claw in the traveling direction is inclined toward the old ridge side with respect to the rear side in a plan view. Ridge coating machine.

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