JP6735786B2 - Ridge coating machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ridge coating machine, and more particularly to a ridge coating machine provided with a pretreatment section that cuts old ridges for earthing and a ridge section that coats the filled soil on the cut old ridges.

Such a ridge coating machine is mounted on a traveling machine body such as a tractor and performs ridge coating work at a position laterally offset with respect to the traveling position of the traveling machine body, and cuts old ridges to fill the earth. It is equipped with a pre-treatment section and an arranging section for applying the soil on the old ridge that has been cut down.

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

The tilling claw of the pretreatment section 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 a direction opposite to the rotation direction of the tilling nail, and the horizontal blade portion is It is configured to curve to one side of the vertical blade portion. Although this plowing claw can satisfactorily crush the soil with the vertical blade portion, the cultivated soil cannot be sufficiently brought to the ridge portion side only with the lateral blade portion curved to the side.

Therefore, as described in Patent Document 1, the applicant of the present invention, at the tip portion of the nail main body portion corresponding to the vertical blade portion of the tilling claw provided in the last row among the tilling nails provided in a plurality of rows. It is proposed that a scooping board in the form of a plate with a high earth-moving function be provided, and that the soil crushed by the scooping board be earth-moved to the ridge section side. Since this scooping board is formed in a plate shape so as to bring the scooped soil to the side of the ridge, the scooping and landing performance is very good.

However, the scooping plate is likely to come into contact with foreign matter such as stones existing in the cultivated soil and receive a shock, and thus large vibration is likely to occur. Also, in order to prevent damage to the power transmission mechanism that transmits power to the pretreatment unit when an overload is applied to the scooping plate, a shear bolt is provided on the power transmission mechanism so that the scooping plate is not overloaded. When actuated, the shear bolt breaks and damage to the power transmission mechanism can be prevented, but the ridge coating work is interrupted.

Therefore, it has been proposed to use, in place of the tilling claw provided with the scooping plate, a nose claw whose front end portion of the lateral blade portion of the tilling claw bends at a substantially right angle to the front side in the traveling direction of the tilling claw. By using such a claw, it is difficult to receive an impact against a foreign substance, it is difficult to generate a large vibration, and the shear bolt is prevented from breaking.

JP, 2010-187587, A

The vertical blade portion that continuously extends from the mounting base of the knuckle extends along the surface of the rear plate portion that is arranged on the rear side of the cover body that covers the knuckle. For this reason, when soil adheres to the inner surface of the rear plate, the scallops and the holder for mounting the scallops come into contact with the soil adhered to the cover body as the scallops rotate, and the scallops and the holder are removed. There is a risk of wear.

The present invention has been made to solve such a problem, and there is no fear that the tilling claw and the holder holding the plowing claw are worn due to contact with soil attached to the inner surface of the cover body that covers the pretreatment section. The purpose is to provide a ridge coater.

In order to achieve the above-mentioned object, the ridge coating machine of the present invention is mounted on a traveling machine body, is arranged at a position laterally offset with respect to the traveling position of the traveling machine body, and is a pretreatment for cutting off the old ridges for earthing. In the ridge coating machine that has a ridge section that applies the part and the soil that has been piled up to the old ridge that has been cut down, and that performs the ridge coating work by advancing with the traveling of the traveling machine body, the pretreatment unit is in the traveling direction of the traveling machine body. And a cultivating shaft that extends in the front-rear direction and is rotatably supported, has cultivating pawls that are provided in multiple rows at predetermined intervals in the axial direction and that rotate with the cultivating shaft.The cultivating pawls are continuous from this mounting base. Has a vertical blade portion and a horizontal blade portion that extend from the vertical blade portion to the horizontal blade portion and bends in the direction opposite to the direction of rotation of the tilling shaft, and the horizontal blade portion bends to one side with respect to the vertical blade portion. However, the horizontal blade portion of the tilling claw provided in the last row among the tilling claws provided in a plurality of rows bends toward the front side in the axial center direction of the tilling shaft, and the tilling nail in the last row has the tilling claw of the tilling nail. A soil removing member is provided which covers one side of the mounting portion on which the mounting base is mounted in the rotation direction of the tillage claw and extends from the mounting base toward the vertical blade portion.

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 rotating direction of the tilling claw and extends from the mounting base portion along the blade edge of the vertical blade portion.

In addition, 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 portion along the ridge of the vertical blade portion.

Further, the back surface of the vertical direction of the last row of the tilling claws of the present invention and the rear side in the advancing direction of the horizontal blade section is coated with a wear-resistant metal layer along the extending direction of the vertical blade section and the horizontal blade section. It is characterized by being

In addition, the pretreatment unit of the present invention has a cover body that surrounds the periphery of the tilling claw, and the soil removing member is a cover in which the surface on the rear side in the traveling direction of the tilling nail covers the rear side in the traveling direction of the last row of the tilling nails. It is characterized in that it is arranged facing the back plate of the body.

Further, the cover body of the present invention is characterized in that a portion covering an upper side and a lateral side of a rotation locus of the tilling claw is 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 attached to the mounting portion.

Further, the turning radius of the tip end portion of the last row tilling claws of the present invention is larger than the turning radius of the tilling claws other than the last row.

Further, the tiller shaft of the pretreatment unit 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 coater according to the present invention, by having the above-mentioned features, there is no fear that the tilling claw and the holder holding the tine will be worn by contacting the soil attached to the inner surface of the cover body that covers the pretreatment section. A coating machine can be provided.

The top view of the ridge coater concerning one embodiment of the present invention is shown. The left side view of a ridge coater is shown. The front view of a ridge coating machine is shown. The pretreatment part in which the soil removal member was provided is shown, the figure (a) is a side view of the pretreatment part, and the figure (b) is a front view of the pretreatment part. The soil removing member is shown, (a) is a plan view of the soil removing member, (b) is a front view of the soil removing member, and (c) is a left side view of the soil removing member. Yes, (d) is a right side view of the soil removing member. The part of the pretreatment part in which the soil removal member concerning other embodiment was provided is shown, the figure (a) is a partial side view of the pretreatment part, and the figure (b) is a partial front view of the pretreatment part. It is a figure. The soil removal member which concerns on other embodiment is shown, The figure (a) is a top view of the soil removal member, the figure (b) is a front view of the soil removal member, and the figure (c) is soil removal. It is a side view of a member. The front view of the pretreatment part in which the soil removal member concerning other embodiment was provided is shown. The soil removal member concerning other embodiment is shown, the figure (a) is a front view of the soil removal member, the figure (b) is a bottom view of the soil removal member, and the figure (c) is the soil removal member. It is a left side view of a member and the same figure (d) is a right side view of a soil removal member.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best embodiment of the furrow coater according to the present invention will be described with reference to FIGS. Incidentally, there are various types of ridge coating machine, among them, as an example, a ridge coating machine capable of continuously performing ridge coating work up to the corner of the field by proceeding with traveling of the traveling body. This will be described below.

As shown in FIG. 1 (plan view), the ridge coater 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear portion of the traveling machine body 90, so that the traveling machine body 90 travels forward. The ridge coating work is performed. The ridge coater 1 is mounted on the traveling machine body 90 and has a mounting portion 10 having an input shaft 3 to which the power from the traveling machine body 90 is input, and an offset cylinder 4 provided in the mounting portion 10 with respect to the mounting portion 10. Offset mechanism section 20 movable in the width direction of the ridge coating machine 1 (hereinafter, referred to as “left-right direction”), and a pivot point that extends in the vertical direction on the moving end side (rear end side) of the offset mechanism section 20. O is provided, and is arranged so as to be horizontally rotatable about the rotation fulcrum O as a center of rotation, and is laterally offset with respect to the traveling position of the traveling machine body 90 by the power transmitted from the input shaft 3. And 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 is provided in parallel with an offset frame 21 whose front end side is rotatably connected to the hitch frame 11 and extends rearward, and is arranged in parallel along the right side of the offset frame 21 so that the front end side is the right end portion of the hitch frame 11. And a link member 25 rotatably connected to the. The rear end of the link member 25 is rotatably connected to a connecting member 23 rotatably provided at the rear end of the offset frame 21. The offset mechanism unit 20 constitutes a parallel link mechanism by the offset frame 21, the link member 25, the hitch frame 11 and the connecting member 23.

The offset frame 21 is movable 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 that is rotatably arranged coaxially with the rotation fulcrum O of the working unit 50 on the rear end side of the offset frame 21, and has a traveling body 90. The power transmitted from the input shaft 3 to the driven shaft 29 can be transmitted.

A main shaft 7 arranged coaxially with the driven shaft 29 and extending downward is connected to a lower part of the driven shaft 29. The main shaft 7 rotates together with the rotation of the driven shaft 29, and power can be transmitted to the working unit 50. A spindle case 30 (see FIG. 2) that covers the spindle 7 is arranged outside the spindle 7, and an upper end portion of the spindle case 30 is rotatably connected to a lower rear end of the offset frame 21. A working unit 50 is fixedly attached to the lower end of the.

The working unit 50 can be rotated with respect to the rotation fulcrum O by the expansion and contraction of the expansion and contraction cylinder 41 connected between the support frame 32 connected to the connecting member 23 and the main shaft case 30. Is. When the expansion/contraction of the expansion/contraction cylinder 41 is restricted, the working unit 50 is held so that the working direction of the working 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. It

The support frame 32 has one end connected to the spindle case 30 and the other end extending above the pretreatment power transmission case 31 for transmitting power to the pretreatment unit 61 of the working unit 50 along the case, and thus the support frame 32 A tip portion of 32 is connected to a cover body 70 that covers the pretreatment portion 61.

The working unit 50 will be described in detail later, but the heaven-field processing unit 51 that cuts down the upper part of the old ridge formed along the periphery of the field, the pre-processing unit 61 that fills up the cut-down soil, and the piled up soil. And a trimming portion 80 to be painted on the old ridge that has been cut.

First, the trimming section 80 will be described. The ridge portion 80 includes a polyhedron drum 82 that is attached to a rotary shaft 81 that extends in the left-right direction and is rotatably supported, and a cylindrical portion 83 that is attached to the right end of the polyhedron drum 82 and extends in the lateral direction. To have. The adjusting portion 80 is connected to and supported by the spindle case 30 via the adjusting power transmission case 87. A ridge-side power transmission mechanism (not shown) is built in the ridge-side power transmission case 87, and this ridge-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 ridge portion 80. Has been done.

The pretreatment section 61 is supported by the spindle case 30 via the pretreatment power transmission case 31. A pretreatment power transmission mechanism (not shown) is built in the pretreatment power transmission case 31. The pretreatment 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. Details of the preprocessing unit 61 will be described later.

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

The sky field power transmission case 54 is disposed on the rear side in the traveling direction of the sky field processing unit 51 and extends in a direction orthogonal to the rotation axis 52 of the sky field processing unit 51. One end in the longitudinal direction of the sky field power transmission case 54 is vertically rotatably attached to the tip of the tilling shaft 62 of the pretreatment unit 61. Therefore, the sky power transmission case 54 is vertically rotatable about its one end. The heaven-field processing unit 51 can adjust the vertical position via a vertical position adjusting mechanism unit 55 provided between it and the support frame 32.

Next, the preprocessing unit 61 will be described. As shown in FIG. 3, FIG. 4( a ), and FIG. 4( b ), the pretreatment unit 61 is a plurality of rotary shafts 62, which are radially attached to the outer circumference of the rotary shaft 62 and rotate together with the rotary shaft 62. It has cultivating claws 63, 64 and 65. The pre-processing unit 61 is such that when the tips of the tillage claws 63, 64, 65 are at positions facing the old ridge K (see FIG. 4( b )), the tips are from the upper side to the lower side of the old ridge K. It rotates in the moving arrow X direction, 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 in the axial direction of the tilling shaft 62 to the rear side, and each row has a phase difference of 180 degrees in the circumferential direction of the tilling shaft 62. I have two of them attached. The tilling claws 63, 64, 65 are detachably attached to a holder 66 provided on the tilling shaft 62 via fastening means such as bolts 67.

The holder 66 is fixed to a side surface 68a of a mounting plate 68 mounted in a state of extending in a direction substantially orthogonal to the tilling shaft 62. The holder 66 has an insertion hole portion into which the attachment base portions 63a, 64a, 65a of the tillage claws 63, 64, 65 can be inserted, and an attachment hole portion through which the shaft portion of the bolt 67 is inserted. The mounting plate 68 is formed in a polygonal shape in a side view, and is formed in axial symmetry about the cultivating shaft 62.

As shown in FIG. 4( b ), the tilling claws 63, 64, 65 have vertical blade portions 63 b, 64 b, 65 b and horizontal blade portions 63 c, which extend continuously from the mounting base portions 63 a, 64 a, 65 a attached to the holder 66. It has 64c, 65c, and bends in a 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 are vertical blade portions 63b, 64b. , 65b, and the rake faces 63d, 64d, 65d are formed on the inside by bending to one side. The vertical blade portions 63b, 64b, 65b extend in a direction substantially orthogonal to the tilling shaft 62 (see FIG. 4(a)). The vertical blade portions 63b, 64b, 65b and the horizontal blade portions 63c, 64c, 65c of the tilling claws 63, 64, 65 are each formed with a blade edge portion having a substantially constant width. It is single-edged.

Of the tilling claws 63, 64, 65 arranged in three rows from the front side to the rear side of the tilling shaft 62, tips of the horizontal blade portions 63c, 64c of the first and second row tilling claws 63, 64. The side is bent toward the rear side in the axial center of the tilling shaft 62, and the tip end side of the horizontal blade portion 65c of the third row plowing pawl 65 is bent toward the front side in the axial center of the tilling shaft 62. The turning radius R3 of the third row plowing pawl 65 (see FIG. 4(b)) is set to be larger than the turning radius R2 of the second row plowing pawl 64, and the turning radius R3 of the second row plowing pawl 64 is larger than that of the second row plowing pawl 64. The turning radius R2 is configured to be larger than the turning radius R1 of the first row plowing claw 63. That is, the turning radius R3 of the third row plowing pawl 65 has the maximum turning radius as compared with the turning radii of the first row plowing pawl 63 and the second row plowing pawl 64.

As shown in FIG. 1, when the working unit 50 moves to the work position Pa where the ridge coating work can be performed on the side of the traveling machine body 90, the front side of the cultivating shaft 62 moves backward. It will be in a state of being inclined to the old ridge K side with respect to the side.

As shown in FIG. 4( b ), the pretreatment section 61 configured in this manner advances the pretreatment section 61 while the tilling shaft 62 rotates in the arrow X direction, and the first row of tilling claws 63, The vertical blades 63b, 64b, 65b of the second row plowing pawl 64 and the third row plowing pawl 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 plowing. This cultivated soil is held by the rake faces 63d, 64d and 64d of the horizontal blade portions 63c, 64c and 65c of the first row tilling claw 63, the second row tilling claw 64 and the third row tilling claw 65. After being held and getting out of the soil, it is guided along the inner surface of the cover body 70 provided in the pretreatment section 61 described later, and is discharged to the old ridge side and supplied to the ridge section 80 (see FIG. 1). It

The first row tilling claws 63 and the second row tilling claws 64 have turning radii R1 and R2 smaller than the turning radius R3 of the third row tilling claws 65 arranged in the axially last row of the tilling shaft 62. Since it is configured to have, the tilling resistance during 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 tillage claws 63, 64, 65 have vertical blade portions 63b, 64b, 65b and horizontal blade portions 63c, 64c, 65c that continuously extend from the attachment base portions 63a, 64a, 65a, and the vertical blade portions 63b. , 64b, 65b to the horizontal blade portions 63c, 49c, 650c are curved in a direction opposite to the rotational direction, and the horizontal blade portions 63c, 64c, 65c are curved to one side with respect to the vertical blade portions 63b, 64b, 65b. Since it is configured in a shape, foreign matters such as stones can easily escape, so it is less likely to be impacted. For this reason, even if foreign matter such as stones comes into contact with these tilling claws 63, 64, 65, these tilling claws 63, 64, 65 are less likely to be impacted, so that large vibrations can be prevented.

Further, since the cultivating shaft 62 is inclined to the old ridge K side in a plan view, these tilling claws 63, 64, 65 are cut diagonally to the old ridge K and move the soil in that direction. Therefore, the direction of soil flow can be directed to the ridge portion side. Therefore, foreign matters such as stones are easily escaped and the risk of overload is small, and the flow of soil supplied to the ridge portion 80 is smooth, and stable ridge coating work can be performed.

As shown in FIGS. 4(a) and 4(b), the third row of tilling pawls 65 covers the front side of the holder 66 to which the mounting base portion 65a is attached in the rotating direction of the tilling pawls, and is attached. 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 disposed so as to face the vertical blade portion 65b of the third row plowing claw 65.

The soil removing member 75 is formed by bending a metal plate, 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 (the length in the tilling axis direction). 65 extends from the attachment base portion 65a of the vertical blade portion 65b along the blade edge of the vertical blade portion 65b. As shown in FIG. 4(b), FIG. 5(a), FIG. 5(b), FIG. 5(c), and FIG. 5(d), the soil removing member 75 has side plates 76 and ends of the side plates 76. And a front plate portion 77 that is bent and extends from the portion.

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

The side plate tip portion 76b covers the attachment base portion 65a side of the vertical blade portion 65 and extends to a position closer to the base end side than a half of the tilling claw 65 when the claw length is the total claw length. The length of the side plate tip portion 76b is set to about half of the total length of the nail without extending to the tip of the tilling nail 65, so that the amount of soil supplied to the tilling nail 65 decreases as the ridge coating machine 1 advances. This is to prevent this.

The front plate portion 77 is connected to one end portion in the width direction of the side plate base portion 76a and extends in a direction substantially orthogonal to the side plate base portion 76a, and the side plate tip portion is connected to one end portion in the width direction of the side plate tip portion 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 portion 77 a has a larger dimension than the width of the holder 66. The front plate base portion 77a extends from the front surface to the rear surface in the traveling direction of the holder 66, beyond the rear surface and beyond the mounting plate 68 to a position near the inner surface of the rear plate portion 71 of the cover body 70 (see FIG. See a)). An end surface 77a2 of the front plate base portion 77a on the side of the rear plate portion 71 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 unit 61 rotates, the front plate base 77a can rotate without coming into contact with the rear plate 71 of the cover body 70, and the soil adhered to the rear plate 71 is removed by the front plate base 77a. can do.

The width of the front plate tip portion 77b is substantially the same as the width of the front plate base portion 77a, and is larger than the width of the holder 66. The front plate front portion 77b extends from the front surface of the holder 66 in the traveling direction to the rear surface thereof and further beyond the mounting plate 68 to a position near the inner surface of the rear plate portion 71 of the cover body 70. An end surface 77b2 of the front plate tip portion 77b on the side of the rear plate portion 71 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 tip portion 77b can rotate without contacting the rear plate portion 71 of the cover body 70, and the soil attached to the rear plate portion 71 by the front plate tip 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 77a on the front plate tip 77b side (FIGS. 5A and 5). (See (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. 4(a) and 4(b), the tilling claw 65 of the pretreatment unit 61 to which the soil removing member 75 is attached is provided on the rear side and the side opposite to the old ridge K side, as shown in FIGS. The side extending from the upper part to the side and the front side thereof are covered with the cover body 70. The cover body 70 is connected to the front plate part 72 and the rear plate part 71 that cover the front side and the rear side of the tilling claws 63, 64, 65 of the pretreatment part 61, and the front plate part 72 and the rear plate part 71 so as to be cultivated. The claw 63, 64, 65 has an arc-shaped plate portion 73 that covers the side portion on the opposite side of the old ridge K side from the outer peripheral upper portion.

The front plate portion 72 extends in an arcuate band shape from the upper part of the rotation locus toward the opposite side to the old ridge side along the peripheral edge on the front side of the rotation loci of these tilling claws 63, 64, 65, and the lower part of the front plate portion 72. Is located below the cultivating 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 loci of these tilling claws 63, 64, 65 and on the side opposite to the old ridge side and below the tilling shaft 62. There is.

The arcuate plate portion 73 is connected between the front plate portion 72 and the peripheral portions of the rear plate portion 71, and is substantially directly above the tilling shaft 62 along the outside of the rotation loci of the tilling claws 63, 64, 65. To the position below the tilling shaft 62 through the side opposite to the old ridge side. Further, the arc-shaped plate portion 73 is inclined toward the tilling shaft 62 side as it goes from the rear side to the front side. Therefore, when the pretreatment unit 61 rotates, the soil conveyed by the tilling claws 63, 64, 65 moves upward along the inner surface of the arc-shaped plate portion 73 and the end of the arc-shaped plate portion 73 on the old ridge side. Thrown from.

The arc-shaped plate portion 73 is provided along the extending direction of the virtual line Ls connecting the outer peripheries of the rotation loci of the first row plowing claw 63 and the third row plowing claw 65 (FIG. 4(a)). reference). Therefore, the space between the rotation loci of these tillers 63, 64, 65 and the inner surface of the arc-shaped 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. You can

Next, a method of attaching the soil removing member 75 to the holder 66 will be described. First, the bolt 67 for fixing the third row plowing pawl 65 is removed from the holder 66. The tilling 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 removing member 75 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. The position of the member 75 is adjusted. Further, the position of the soil removing member 75 is adjusted so that the blade portion of the vertical blade portion 65b of the tilling claw 65 contacts 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, the nut 69 is screwed onto the shaft portion of the bolt 67 extending from the side plate portion 76 of the soil removing member 75 via the holder 66, the soil removing member 75 is fastened to the holder 66, and the soil removing member 75 It is attached to the holder 66.

Next, the operation of the soil removing member 75 when performing the ridge coating work by the ridge coating machine 1 configured as described above will be described with reference to FIGS. 1, 4A, and 4B. At the time of the ridge coating work by the ridge coating machine 1, as shown in FIG. 1 and FIG. 4(b), the soil of the field is cultivated by the tilling claws 63, 64, 65 of the pretreatment section 61, and is released to the old ridge K side. To be done. This loosened soil is painted on the old ridge by the ridge arranging section 80 (see FIG. 1) to form a shaped new ridge.

By the way, when the ridge coater 1 moves forward, soil is pressed and adhered to the inner surface of the rear plate portion 71 disposed on the rear side in the traveling direction of the cover body 70 that covers the pretreatment portion 61. The attached soil comes into contact with the third-row tilling claws 65 and the holder 66 holding them, and the third-row tilling claws 65 and the holder 66 are easily worn.

However, since the soil removing member 75 described above is attached to the holder 66 that holds the third row of tilling claws 65, as shown in FIG. The adhered soil S can be removed. That is, the soil S adhering to the rear plate portion 71 can be stripped off and removed by the front plate base portion 77a and the front plate tip portion 77b of the front plate portion 77. Therefore, the soil S adhering to the rear plate portion 71 can be reduced during the plowing work, and the situation in which the third row plowing pawl 65 and the holder 66 holding the same are worn and damaged can be prevented. You can

In the above-described embodiment, the soil removing member 75 has the 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 entire length. As shown in FIGS. 6(a) and 6(b), the soil removing member 100 covers the rear side in the rotation direction of the tilling claw of the holder 66 to which the third row tilling claw 65 is attached, and at the same time, attaches the tilling claw 65. It extends from the base portion 65a along the ridges of the vertical blade portion 65b and the horizontal blade portion 65c.

The soil removing member 100 will be described by further adding FIGS. 7A, 7B, and 7C. 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. And a back plate tip portion 105 that extends from the end portion of the back plate.

The back plate base 101 is formed in a substantially rectangular shape in plan view (see FIG. 7A), and the width of the back plate base 101 is larger than the width of the holder 66 (see FIG. 6B). There is. The back plate base portion 101 extends from one end portion in the width direction of the holder 66 to a position beyond the end portion on the other side and further beyond the rear end portion in the rotation direction of the mounting plate 68. The end surface 101a of the back plate base 101 on the side of the mounting plate 68 extends linearly and is arranged parallel to and facing the inner surface of the rear plate 71 of the cover body 70 at a predetermined distance (see FIG. 6A). ). Therefore, when the third row plowing pawls 65 rotate, the plowing pawls 65 do not come into contact with the inner surface of the rear plate portion 71, and the rear plate base portion 101 causes the inner surface of the rear plate portion 71 opposed to the rotation area of the holder 66 to be rotated. The attached soil can be removed. Therefore, it is possible to prevent the holder 66 from coming into contact with the soil and being worn and 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 portion 101 in the rotation direction so as to project therefrom. A hole portion 102 a through which the bolt 67 is inserted is provided at an edge portion of the fixed plate 102.

On the other hand, the back plate front 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 formed in one side. It is curved in a concave shape on the side. The short-side length h of one end of the back plate tip portion 105 in the longitudinal direction has substantially the same dimension as the bending height from the base end to the tip of the horizontal blade portion 65c of the tilling claw 65.

The back plate tip portion 105 extends along the ridge of the third row of tilling claws 65 and extends in a direction substantially orthogonal to the vertical blade portions 65b and the horizontal blade portions 65c. Further, the end surface 105a extending linearly on one side in the lateral direction of the back plate front portion 105 is arranged in parallel to the inner surface of the rear plate portion 71 of the cover body 70 with a predetermined distance therebetween (see FIG. 6( See a)). For this reason, when the third row plowing pawls 65 rotate, the back plate tip portion 105 can remove the soil attached to the rear plate portion 71 without the plowing pawls 65 contacting the inner surface of the rear plate portion 71. .. Further, since the back plate tip portion 105 extends from the base portion of the vertical blade portion 65b of the tilling claw 65 to the tip portion of the horizontal blade portion 65c, the tilling nail 65 of the soil attached to the rear plate portion 71 is included. It is possible to remove the soil corresponding to almost all of the rotating regions of. Therefore, it is possible to reliably prevent the soil attached 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 shown to extend along the blade edge of the vertical blade portion 65b of the tilling claw 65, but as shown in FIG. The soil removing member 110 may be extended to the periphery of the base end portion of the blade edge 65e of 65b.

The soil removing member 110 is formed by bending a sheet metal, 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 (the length in the tilling axis direction). The claw 65 extends from the attachment base portion 65a to the periphery of the base end portion of the blade edge of the vertical blade portion 65b. As shown in FIGS. 8, 9A, 9B, 9C, and 9D, the soil removing member 110 is bent from a side plate portion 111 and an end portion of the side plate portion 111. And a front plate portion 115 that extends in parallel.

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

The front plate portion 115 is connected to one end of the side plate portion 111 in the width direction 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 near the section. The width of the front plate portion 115 is larger than the width of the holder 66.

The front plate portion 115 is located near the inner surface of the rear plate portion 71 of the cover body 70 (see FIG. 4A) beyond the front surface to the rear surface in the traveling direction of the holder 66 and beyond the mounting plate 68. Extend to. An end surface 115a of the front plate portion 115 on the side of the rear plate portion 71 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 unit 61 rotates, the front plate portion 115 can rotate without coming into contact with the rear plate portion 71 of the cover body 70, and the front plate portion 115 removes the soil attached 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 opposes the rear surface of the vertical blade portion 65b and the horizontal blade portion 65c of the tilling claw 65. The soil attached to the rear plate portion 71 of the cover body 70 cannot be removed. Therefore, the soil adhering to the rear plate portion 71 comes into contact with the back surfaces of the vertical blade portions 65b and the horizontal blade portions 65c of the third row plowing pawls 65 to remove the vertical blade portions 65b and the horizontal blade portions 65c of the plowing pawls 65. May wear out.

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

As a result, the wear resistance of the vertical blades 65b and the horizontal blades 65c of the third row plowing pawls 65 is improved, and the third row plowing pawls 65 are applied to the soil adhered to the rear plate portion 71 of the cover body 70. It does not easily wear when it comes into contact.

1 Ridge coating machine 61 Pretreatment section 62 Tilling shaft 63, 64, 65 Tilling claw 63a, 64a, 65a Attachment base 63b, 64b, 65b Vertical blade 63c, 64c, 65c Horizontal blade 70 Cover body 71 Rear plate 75, 100, 110 Soil removing member 80 Rectifying section 90 Traveling machine 116 Wear resistant metal layer K Old ridge

Claims (7)

It is mounted on the traveling machine body and is arranged at a position offset laterally with respect to the traveling position of the traveling machine body, and the pretreatment section for cutting off the old ridges to build up earth and applying the soil to the old ridges In a ridge coating machine having a trimming section, which performs ridge coating work by proceeding with traveling of the traveling machine body,
The pretreatment section is provided in a plurality of rows at predetermined intervals in the axial direction on a tilling shaft that extends in the front-rear direction with respect to the traveling direction of the traveling vehicle and is rotatably supported, and the tilling shaft rotates together with the tilling shaft. Have claws,
The tilling claw has a vertical blade portion and a horizontal blade portion that extend continuously from this mounting base portion, and while curving in a direction opposite to the rotation direction of the tilling shaft from the vertical blade portion to the horizontal blade portion, the horizontal The blade part is curved to one side with respect to the vertical blade part,
The horizontal blade portion of the tilling claw provided in the last row among the tilling claws provided in a plurality of rows is bent toward the front side in the axial center direction of the tilling shaft,
The last row of the tillage claws covers the front side in the rotation direction of the tillage claws of the attachment part to which the attachment base of the tillage claw is attached and has a width equal to or larger than the thickness of the attachment part, and at least the attachment A soil removing member extending from the base portion to the vicinity of the base end portion of the blade edge of the vertical blade portion is provided,
The soil removing member has a side plate portion and a front plate portion that extends by bending from an end portion of the side plate portion,
The front plate portion has a base portion and a tip portion that extends along the blade edge of the vertical blade portion from the end portion of the base portion to at least the periphery of the base end portion of the blade edge of the vertical blade portion so as to bend. ,
A ridge coater characterized by that. A wear-resistant metal layer is coated on the rear surfaces of the vertical blades and the horizontal blades of the last row of the tilling claws in the traveling direction, along the extending direction of the vertical blades and the horizontal blades. The ridge coating machine according to claim 1, characterized in that. The pretreatment unit has a cover body that surrounds the periphery of the tilling nail,
The soil removing member is arranged such that a surface on the rear side in the traveling direction of the tilling claw faces a rear plate portion of the cover body that covers a rear side in the traveling direction of the last row of the tilling nails. The ridge coating machine according to claim 1 or 2. The ridge coater according to claim 3, wherein the cover body is formed such that a portion covering an upper side and a lateral side of a rotation locus of the tilling claw is tapered so that a diameter becomes smaller toward a front side. The ridge coating machine according to any one of claims 1 to 4, wherein the soil removing member is detachably attached to the mounting portion. The turning radius of the tip end portion of the last row of the tillage pawls has a larger turning radius than the turning radius of the tillage pawls of the rows other than the last row. The furrow coater described in Kaichi. The cultivating shaft of the pretreatment unit is such that the front side in the traveling direction of the cultivating claw is inclined to the old ridge side with respect to the rear side in a plan view. Ridge coater.

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