JP5936431B2 - 畦 coating machine - Google Patents

Description

  The present invention relates to a glazing machine, and more particularly, to a glazing machine provided with a pre-processing unit that cuts and fills an old paddle and a trimming unit that applies the piled soil onto the cut old paddle.

  Such a drapery machine is mounted on a traveling machine body such as a tractor, and performs a dreading operation at a position offset laterally with respect to the traveling position of the traveling machine body. A pre-processing unit and a trimming unit for applying the piled soil onto the old crushed shears are provided.

  The pre-processing unit has, for example, a plurality of rows of tilling claws projecting at a predetermined distance in the axial direction of the tilling shaft on the outer peripheral surface of the tilling shaft that is rotatably supported along the aircraft traveling direction, It is configured to cultivate and raise the soil of the old cocoon by rotation of the cultivating claws, and to supply the raised soil to the side of the trimming unit and apply it to the old cocoon by the trimming unit. The plurality of tilling claws are provided so that the protruding lengths from the tilling shaft are substantially equal, and the rotation trajectory of these tilling claws is substantially cylindrical.

  In this way, in the configuration in which the protruding lengths of the respective tilling claws from the tilling shaft are equal, the load received from the soil acting on the first row of tilling claws on the front end side of the tilling shaft acts on the second and subsequent rowing claws. The load becomes larger than the load to be applied, and the first row of claws are easily damaged, and the wear progresses quickly, and there is a risk that the tillage vibration becomes relatively large.

  Therefore, as described in Patent Document 1, the protrusion length of the front tilling nail from the tilling shaft is configured to be shorter than the protrusion length of the rear tilling nail from the tilling shaft. A cocoon coater that reduces tillage vibrations by dispersing cocoons has been proposed. Further, in Patent Document 2, a cultivating claw that faces the front side during work by bending the tip side of at least one cultivating claw in the rear row to the front in the traveling direction rather than the front row of the plurality of cultivating claws. Since the old culvert is cultivated, a load that acts on the cultivating claws in the foremost row is reduced, and a culling machine that enables stable culling work by reducing tillage vibration and thrust has been proposed.

  However, the tilling claws provided in these paddy coaters have a vertical blade portion and a horizontal blade portion extending continuously from the tilling shaft, and the vertical blade portion and the horizontal blade portion are in a direction opposite to the rotation direction of the tilling claws. Curved and the horizontal blade portion is configured to curve to one side of the vertical blade portion, so even if it can be crushed well by the vertical blade portion, only the horizontal blade portion curved to the side The cultivated soil cannot be sufficiently brought to the trimming section side.

  Therefore, as described in Patent Document 3, the present applicant provides a plate-shaped scooping plate having a high leveling function at the tip of the nail body portion corresponding to the vertical blade portion of the tilling nail. Proposes ugly claws that bring the crushed soil to the trimming section.

JP 2002-281803 A JP 2007-282518 A Japanese Patent No. 4318965

  This scooping board is formed in a plate shape to bring the soil that has been scooped up to the trimming unit side, so it has excellent soil crawling and soiling performance, but it is in contact with foreign objects such as stones in the cultivated soil. Therefore, it is easy to receive an impact and a large vibration is likely to occur. For this reason, depending on the field conditions, there is a risk that the overload prevention device that prevents overload from acting on the drive unit that rotates the claw will frequently work and the work may be interrupted. It is desired.

  The present invention has been made to solve such a problem, and has a function of bringing soil to the trimming section side, has a good soil crushing property, and has a large vibration even when it comes into contact with an obstacle such as a stone. An object of the present invention is to provide a wrinkle coater having a pre-processing unit that is less likely to cause rust.

  In order to achieve the above-mentioned object, the padding machine of the present invention is mounted on a traveling machine body, disposed at a position offset laterally with respect to the traveling position of the traveling machine body, and pre-processing for crushing an old hammer In the dredging machine, which is equipped with a trimming unit for painting the section and the piled up soil on the cut old dredge, and proceeds with the traveling of the traveling machine body to perform the painting process, the pre-processing part is in the traveling machine body traveling direction. A tilling shaft extending forward and rotatably supported by a tilling shaft provided in a plurality of rows at a predetermined interval in the axial direction and rotating with the tilling shaft (first tilling claws 67 and 2 in the embodiment). The tillage claw 69 and the third tillage claw 70) have a vertical blade portion and a horizontal blade portion extending continuously from the mounting base, and the rotation direction of the tillage shaft from the vertical blade portion to the horizontal blade portion. And bend in the opposite direction. The horizontal blade portion of the tilling claw (first tilling claw 67 in the embodiment) provided in the last row among the tilling claws provided in a plurality of rows is bent to the side, and faces the front side in the axial direction of the tilling shaft. The horizontal blade portion of the tilling claw (second tilling claw 69 in the embodiment) arranged on the front row side than the tilling claw provided in the last row bends toward the last row tilling claw side. The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft (claim 1).

  Further, according to the present invention, the rotation radius of the last row tillage claw is larger than the rotation radius of the row tillage claw other than the last row (second tillage claw 69 and third tillage claw 70 in the embodiment). It has a radius (claim 2).

  Further, the pre-processing unit of the present invention has a cover body that covers the periphery of the tilling nail, and the cover body is formed in a tapered shape in which the portion covering the upper side and the side in the rotation locus of the tilling nail becomes smaller in diameter toward the front. (Claim 3).

  Further, the tilling shaft of the pretreatment unit of the present invention is inclined to the old ridge side in a plan view (Claim 4).

  According to the scissoring machine according to the present invention, it has the above-mentioned characteristics, has a function of bringing the soil to the trimming unit side, has good crushed property, and has a large vibration even when it comes into contact with an obstacle such as a stone. Therefore, it is possible to provide a wrinkle coater provided with a pre-processing unit that is unlikely to cause the occurrence of rust.

1 is a plan view of a wrinkle coater according to an embodiment of the present invention. It is a front view of a glazing machine. It is a fragmentary sectional top view of the working part of a dregs coater. The 1st tillage nail | claw provided in a pre-processing part is shown, The same figure (a) is a side view of a 1st tillage nail | claw, The figure (b) is a part of the part corresponded to the V arrow of the figure (a). It is a bottom view of 1 tillage nail. The 2nd tillage nail and the 3rd tillage nail provided in a pretreatment part are shown, The figure (a) is a side view of the 2nd tillage nail and the 3rd tillage nail, The figure (b) is the figure (a). It is a bottom view of the 2nd tilling nail and the 3rd tilling nail of the portion equivalent to VI arrow view of. FIG. 4A is a side view of the pretreatment unit, and FIG. 4B is a partial cross-sectional plan view of the pretreatment unit. It is a fragmentary perspective view of the transmission mechanism in the offset frame provided with the shear bolt.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A best mode for carrying out the present invention will be described below with reference to FIGS. There are various types of glazing machines, and one of them will be described below as an example.

  As shown in FIG. 1 (plan view), the carburizing machine 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear portion of the traveling machine body 90, and as the traveling machine body 90 travels forward. It is the one to perform the haze painting work. The wrinkle coater 1 is attached to the mounting unit 10 by the mounting unit 10 that is mounted on the traveling machine body 90 and includes the input shaft 4 to which power from the traveling machine body 90 is input, and the offset cylinder 3 provided in the mounting unit 10. An offset mechanism 20 that is movable in the left-right direction and a rotation fulcrum O that extends in the vertical direction on the moving end side (rear end side) of the offset mechanism 20 are provided. And a working unit 50 that works at a position offset laterally with respect to the traveling position of the traveling machine body 90 by the power transmitted from the input shaft 4.

  The mounting portion 10 includes a hitch frame 11 that extends in the left-right direction, and a connection frame 13 that is attached to the front side of the hitch frame 11 and can be connected to the three-point link connection mechanism of the traveling machine body 90.

  The offset mechanism unit 20 is rotatably connected to the hitch frame 11 on the front end side and extends rearward. The offset mechanism unit 20 is arranged along the right side of the offset frame 21 and the front end side is the right end portion of the hitch frame 11. And a link member 25 that is pivotably connected to each other. The rear end side of the link member 25 is rotatably connected to a connecting member 23 that is rotatably provided at the rear end portion 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 can swing in the left-right direction by an expansion / contraction operation of the offset cylinder 3 pivoted between the rear end portion and the left end portion of the hitch frame 11. A power transmission mechanism 28 (see FIG. 7) is provided in the offset frame 21. The power transmission mechanism 28 is a chain transmission mechanism, and includes a driven shaft 29 that is rotatably disposed coaxially with the rotation fulcrum O of the working unit 50 on the rear end side of the offset frame 21. The power transmitted from 90 to the input shaft 4 can be transmitted to the driven shaft 29.

  A main shaft 7 that is arranged coaxially with the driven shaft 29 and extends downward is connected to the lower portion of the driven shaft 29. The main shaft 7 rotates with the rotation of the driven shaft 29 and can transmit power to the working unit 50. A spindle case covering the spindle 7 is disposed outside the spindle 7, and an upper end portion of the spindle case is rotatably connected to a lower portion of the rear end of the offset frame 21, and a working portion 50 is provided at a lower end portion of the spindle case. It is mounted in a fixed state.

  The working unit 50 can be rotated with respect to the rotation fulcrum O by expansion and contraction of the expansion / contraction cylinder 41 connected between the connecting member 23 and the spindle case, and the offset mechanism unit 20 is controlled by expansion / contraction restriction of the expansion / contraction cylinder 41. The working direction of the working unit 50 is held so as to be parallel to the traveling direction A of the traveling machine body 90 with respect to the swing.

  As will be described in detail later, the working unit 50 includes a heaven processing unit 51 that cuts the upper part of the old fence formed along the periphery of the field, a pre-processing unit 61 that piles up the cut soil, and the accumulated soil. And a trimming unit 80 that is applied to the old iron that has been cut.

  3 will be described in addition to FIG. 3. The trimming unit 80 is attached to a polyhedral drum 82 attached to a rotating shaft 81 that extends in the left-right direction and is rotatably supported, and is attached to a right end portion of the polyhedral drum 82. And a cylindrical portion 83 extending in the lateral direction. The trimming unit 80 is connected to and supported by the spindle case via a trimming power transmission case 87. A straightening power transmission mechanism (not shown) is built in the straightening power transmission case 87, and this straightening power transmission mechanism is connected to the main shaft 7 so that the power from the main shaft 7 can be transmitted to the straightening section 80. Has been.

  The preprocessing unit 61 is supported by the main shaft case via a preprocessing power transmission case 64. In the pretreatment power transmission case 64, a power transmission mechanism 65 having a pretreatment side drive shaft 66 that rotates by receiving power from the main shaft 7 is incorporated. A preprocessing unit 61 is connected to the tip of the preprocessing side drive shaft 66. A tilling shaft 62 serving as a rotation shaft of the pretreatment unit 61 is connected coaxially to the pretreatment side drive shaft 66. The tilling shaft 62 of the pretreatment unit 61 is inclined to the old ridge K side in a plan view. Details of the preprocessing unit 61 will be described later.

  The heaven processing unit 51 is supported by the preprocessing unit 61 via the heaven power transmission case 54. A plurality of tilling claws 53 are radially attached to the rotation shaft 52 of the heaven field processing unit 51, and the rotation shaft 52 of the heaven field processing unit 51 is arranged to be inclined toward the old ridge K side in a plan view. A power transmission mechanism 55 is provided in the heaven power transmission case 54, and the power transmission mechanism 55 is connected to the tilling shaft 62 of the preprocessing unit 61 and can transmit the power from the preprocessing unit 61 to the heaven processing unit 51. It is.

  The celestial power transmission case 54 is disposed on the base end side of the celestial processing unit 51 and extends in a direction orthogonal to the rotation axis 52 of the celestial processing unit 51, and this base end portion is a tilling shaft of the preprocessing unit 61. It is attached to the front end portion of 62 so as to be rotatable up and down. For this reason, the heavenly power transmission case 54 is rotatable in the vertical direction with the base end portion as the rotation center.

  As shown in FIG. 3, the pretreatment unit 61 includes the above-described tilling shaft 62, a first tilling claw 67, a second tilling claw 69, a first tilling claw 67 that is attached radially to the outer periphery of the tilling shaft 62 and rotates together with the tilling shaft 62. When the tip of the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 are at a position facing the old tack K, the tip end is the old tillage K. Rotate in the direction of the arrow X moving from the upper part to the lower part, that is, in the downcut direction (see FIG. 6A).

  The first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 have a predetermined distance from the front side to the rear side in the axial direction of the tilling shaft 62, as shown in FIGS. Arranged in three rows, two rows of the same kind of tilling claw having a phase difference of 180 degrees in the circumferential direction of the tilling shaft 62 are attached to each row. The first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 are detachably attached to a holder 62a protruding from the outer periphery of the tillage shaft 62 via fastening means such as a bolt 62b.

  As shown in FIGS. 4 (a), 4 (b), 6 (a), and 6 (b), the third tilling claw 70 is a vertical blade that extends continuously from an attachment base 70a attached to the holder 62a. 70b and a horizontal blade portion 70c, and is bent in the direction opposite to the rotation direction from the vertical blade portion 70b to the horizontal blade portion 70c, and the horizontal blade portion 70c is bent to one side with respect to the vertical blade portion 70b. A rake face 70d is formed on the inner side. In FIG. 4A, the hatched portion indicates the horizontal blade portion 70c, and the line B indicates the bending start line that becomes the boundary between the vertical blade portion 70b and the horizontal blade portion 70c. The position A of the bending start line B with respect to the mounting base portion 70a is positioned more on the tip side than half when the claw length of the third tillage claw 70 is the claw length L, and the third tillage claw 70 is a vertical blade. The length of the part 70b is long. Further, a pre-bending height b1 from the base end to the front end of the horizontal blade portion 70c is lower than a pre-bending height b2 (see FIG. 5B) of a second tillage claw 69 described later. For this reason, the third tilling claw 70 has a smaller function of moving the soil to the side than the second tilling claw 69.

  On the other hand, as shown in FIGS. 5 (a), 5 (b), and 6 (a), the second tilling claw 69 has a vertical blade portion 69b and a horizontal blade portion that continuously extend from an attachment base portion 69a attached to the holder 62a. It has a blade part 69c and is bent in the direction opposite to the rotation direction from the vertical blade part 69b to the horizontal blade part 69c, and the horizontal blade part 69c is bent to one side with respect to the vertical blade part 69b and is raked inward. 69d is formed. In FIG. 5A, the hatched portion indicates the horizontal blade portion 69c, and the line B indicates the bending start line that becomes the boundary between the vertical blade portion 69b and the horizontal blade portion 69c. The position A of the bending start line B with respect to the attachment base 69a is located at a substantially half position when the claw length is the claw full length L. For this reason, the length of the vertical blade portion 69b of the second tillage claw 69 is shorter than the length of the vertical blade portion 70b of the third tillage claw 70 (see FIG. 4A). Further, the pre-bending height b2 from the base end to the front end of the horizontal blade portion 69c is larger than the pre-bending height b1 of the third tillage claw 70 described above. For this reason, the second tilling claw 69 has a larger function of moving the soil to the side than the third tilling claw 70.

  The first tillage claw 67 is configured to have substantially the same shape as the second tillage claw 69, and the length of the first tillage claw 67 is shorter than the total length L of the second tillage claw 69. The second tillage claw 69 is different from the second tillage claw 69 in that it has a bend height b3 shorter than the bend height b2.

  4 (a) and 5 (a) are respectively shown in the vertical blade portions 67b, 69b, and 70b and the horizontal blade portions 67c, 69c, and 70c of the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70, respectively. ), Blade edge portions 67e, 69e, and 70e having a substantially constant width are formed, and the blade edge portions 67e, 69e, and 70e are single blades. In the present embodiment, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 described above are employed. However, the present invention is not limited to these claws, and the position A of the bending start line depends on the field conditions and the like. Or, it is possible to select a tilling nail having a different bending height.

  The third tilling claw 70 configured in this way is provided in the last row of the tilling shaft 62 as shown in FIG. The third tilling claw 70 is disposed such that the side blade portion 70 c faces the front side in the axial direction of the tilling shaft 62. The second tilling claw 69 is disposed on the front side in the axial direction from the third tilling claw 70, and the first tilling claw 67 is disposed on the front side in the axial direction from the second tilling claw 69. That is, the first tilling claw 67 is disposed in the frontmost row (one row), the second tilling claw 69 is disposed in the second row, and the third tilling claw 70 is disposed in the last row (three rows). Yes. The first tilling claw 67 and the second tilling claw 69 are arranged such that the side blade portions 67 c and 69 c face the rear side in the axial direction of the tilling shaft 62.

  These first tilling claws 67, second tilling claws 69, and third tilling claws 70 are arranged substantially evenly with a predetermined interval in the circumferential direction of the tilling shaft 62 as shown in FIG. .

  Further, the rotation radius R3 of the third tilling claw 70 in the last row (3 rows) is larger than the rotation radius R2 of the second tilling claw 69 in the second row, as shown in FIGS. 6 (a) and 6 (b). The rotation radius R2 of the second tilling claw is configured to be larger than the rotation radius R1 of the first tilling claw 67 in the first row. That is, the rotation radius R3 of the third tillage claw 70 has the maximum rotation radius compared to the rotation radii of the first tillage claw 67 and the second tillage claw 69.

  When the tilling shaft 62 of the pretreatment unit 61 configured in this way moves forward in the direction of the arrow X, the vertical blade portions 67b, 69b of the first tilling claw 67, the second tilling claw 69, and the third tilling claw 70, 70b enters the soil and cuts the soil, and the horizontal blade portions 67c, 69c, and 70c enter the soil and cut and cultivate the soil. The cultivated soil is held by the scooping surfaces 67d and 69d of the first tillage claws 67 and the second tillage claws 69 and rake surfaces 67d and 69d. Is guided along the inner surface of the cover body 73 provided on the front side, is released to the old saddle side, and is supplied to the trimming unit 80.

  The first tilling claw 67 and the second tilling claw 69 provided in the first and second rows of the tilling shaft 62 are the rotation radius R3 of the third tilling claw 70 disposed on the rear side in the axial direction of the tilling shaft 62. Since the rotation radius R1, R2 is smaller than that, the tillage resistance at the time of paddying work is surely distributed, and the vibration of tilling can be made relatively small, so that stable padding work can be performed. It can be carried out. In addition, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 (hereinafter referred to as “these tillage claws”) are vertical blade portions that continuously extend from the attachment bases 67a, 69a, and 70a. 67b, 69b, 70b and horizontal blade portions 67c, 69c, 70c, and curved from the vertical blade portions 67b, 69b, 70b to the horizontal blade portions 67c, 69c, 70c in the direction opposite to the rotation direction, and the vertical blade portion 67b. , 69b, 70b, the horizontal blade portions 67c, 69c, 70c are configured to bend to one side, so that foreign objects such as stones can easily escape and are not easily affected. For this reason, even if a foreign object such as a stone comes into contact with these tilling nails, these tilling nails are less susceptible to impacts, and thus it is possible to prevent the occurrence of large vibrations.

  In addition, since these tillage claws 62 are inclined toward the old ridge in plan view, the tillage shaft 62 is cut obliquely with respect to the old ridge and moves the soil in that direction. Can be arranged on the trimming unit side. For this reason, foreign substances such as stones can easily escape and there is little risk of overload, and the flow of the soil supplied to the trimming unit 80 is smooth, and stable scouring work can be performed.

  As shown in FIGS. 2 and 3, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 of the pre-processing unit 61 configured as described above are arranged from the rear side and the upper side to the old tillage side. The side extending over the opposite side and the front side thereof are covered with a cover body 73. The cover body 73 is connected to the front plate portion 73a and the rear plate portion 73c that cover the front side and the rear side of these tilling claws, and the front plate portion 73a and the rear plate portion 73c, and is connected to the front plate portion 73a and the rear plate portion 73c. It has an inclined cover 73d that covers the opposite side.

  The front plate portion 73a extends in a circular arc shape from the upper part of the rotation trajectory along the peripheral edge on the front side of the rotation trajectory of these tilling claws, and the lower part of the front plate portion 73a is from the cultivation shaft 62. Is also located below. The rear plate portion 73c is formed to extend in a fan shape from the upper part on the rear side of the rotation trajectory of these tilling claws to the lower side of the tilling shaft 62 from the upper side opposite to the old tacking side.

  The inclined cover 73d is connected along each peripheral edge of the front plate portion 73a and the rear plate portion 73c, and the end portion on the opposite side of the old cover side of the inclined cover 73d is disposed below the tilling shaft 62 of the pretreatment portion 61. Then, the upper side of the inclined cover 73d extends to a position just above the tilling shaft 62 with a gap along the outside of the rotation trajectory of the tilling claw. Therefore, when the pretreatment unit 61 rotates, the soil conveyed by the first tillage claws 67 and the second tillage claws 69 moves upward along the inner surface of the inclined cover 73d as shown in FIG. Then, it is released from the old heel side end of the inclined cover 73d. The inclined cover 73d has an imaginary line Ls when the imaginary line Ls connecting the outer circumferences of the rotation trajectories of the first tillage claw 67 and the second tillage claw 69 is shifted to a position near the outside of the rotation trajectory of the third tillage claw 70. It is provided along the extending direction. For this reason, the space between the rotation trajectory of these tilling claws and the inner surface of the inclined cover 73d can be narrowed, and the amount of soil deposited on the inner surface side of the inclined cover 73d can be reduced.

  When the padding operation is performed by the padding machine 1 configured as described above, as shown in FIG. 3, the first tillage claw 67, the second tillage claw 69, and the third tillage claw 70 of the pre-processing unit 61 are used to The soil is cultivated and released to the old side. The released soil is smeared on the old paddle by the trimming unit 80 to form a shaped new paddle.

  By the way, the means for transporting the soil and supplying it to the old tiller side are the first tilling claws 67, the second tilling claws 69 and the third tilling claws 70 which are properly arranged in the pretreatment unit 61. As described above, the nail is configured to easily escape foreign objects such as stones, so that it is difficult to receive an impact. For this reason, there is little possibility that these tilling claws will be damaged, and that the overload will act on the drive system. However, in order to prevent damage to these tilling claws and drive system more reliably, as shown in FIG. 7, the sprocket 33 connected to the driven shaft 29 of the power transmission mechanism 28 provided in the offset frame 21 is sheared. Bolts 35 are provided.

  If it does in this way, when a stone etc. collide with at least one of the 1st tillage claw 67 of the pretreatment part 61, the 2nd tillage claw 69, and the 3rd tillage claw 70, and an overload acts on a tillage claw, it will be overloaded. Is transmitted to the power transmission mechanism 65 (see FIG. 3) and the driven shaft 29 to break the shear bolt 35. For this reason, the situation where the 1st tillage claw 67, the 2nd tillage claw 69, the 3rd tillage claw 70, and a drive system are damaged can be prevented beforehand.

DESCRIPTION OF SYMBOLS 1 Reed coating machine 61 Pre-processing part 62 Cultivation shaft 67 1st tilling nail (cultivation nail)
69 Second tillage claw
70 Third tillage nail (cultivation nail)
67a, 69a, 70a Mounting base 67b, 69b, 70b Vertical blade part 67c, 69c, 70c Horizontal blade part 73 Cover body 80 Adjusting part 90 Traveling machine body

Claims (6)

Attached to the traveling machine body and arranged at a position offset laterally with respect to the traveling position of the traveling machine body, the pretreatment unit for cutting the old culvert and depositing the soil, and the piled up old soiled paint. In a scissor coater that includes a trimming unit and that progresses along with the traveling of the traveling machine body to perform a smearing operation,
The pre-processing unit is provided in a plurality of rows with a predetermined interval in the axial direction on a tilling shaft that extends forward with respect to the traveling direction of the traveling machine body and is rotatably supported. Have
The tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the mounting base, bends in the direction opposite to the rotation direction of the tilling shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade The part is bent to one side with respect to the vertical blade part,
Of the tilling claws provided in a plurality of rows, the horizontal blade portion of the tilling claws provided in the last row is bent toward the front side in the axial direction of the tilling shaft,
The horizontal blade portion of the tilling nail arranged on the front row side than the tilling nail provided in the last row is bent toward the tilling nail side of the last row,
The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft,
The rotation radius of the tilling claw provided in the last row has a rotation radius larger than the rotation radius of the plurality of tilling claws arranged on the front row side than the tilling claw provided in the last row. Characteristic salmon coater. Attached to the traveling machine body and arranged at a position offset laterally with respect to the traveling position of the traveling machine body, the pretreatment unit for cutting the old culvert and depositing the soil, and the piled up old soiled paint. In a scissor coater that includes a trimming unit and that progresses along with the traveling of the traveling machine body to perform a smearing operation,
The pre-processing unit is provided in a plurality of rows with a predetermined interval in the axial direction on a tilling shaft that extends forward with respect to the traveling direction of the traveling machine body and is rotatably supported. Have
The tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the mounting base, bends in the direction opposite to the rotation direction of the tilling shaft from the vertical blade portion to the horizontal blade portion, and the horizontal blade The part is bent to one side with respect to the vertical blade part,
Of the tilling claws provided in a plurality of rows, the horizontal blade portion of the tilling claws provided in the last row is bent toward the front side in the axial direction of the tilling shaft,
The horizontal blade portion of the tilling nail arranged on the front row side than the tilling nail provided in the last row is bent toward the tilling nail side of the last row,
The plurality of tilling claws provided on the tilling shaft are arranged at substantially equal intervals in the circumferential direction of the tilling shaft ,
The pretreatment unit has a cover body that covers the periphery of the tillage nail,
At least a part of the cover body is provided in parallel to an imaginary line that connects the outer circumferences of the rotation trajectories of the plurality of tilling claws arranged on the front row side with respect to the tilling claws provided in the last row . A sprinkling machine characterized by that. The cover body has a front plate portion, a rear plate portion, and an inclined cover,
The front plate part extends in a circular arc shape from the upper part of the rotation locus to the opposite side of the old ridge side along the peripheral edge portion on the front side of the rotation locus of the tillage claw, and the lower part of the front plate part is formed by the cultivation shaft. Located below,
The rear plate portion is formed on the rear side of the rotation trajectory of the tillage claw and extends in a fan shape from the upper side opposite to the old rod side to a position below the tillage shaft,
The inclined cover is connected along each peripheral edge of the front plate portion and the rear plate portion, and the end portion of the inclined cover opposite to the old ridge side is disposed below the tilling shaft, The upper side of the inclined cover has a gap along the outer side of the rotation trajectory of the tilling claw and extends almost directly above the tilling shaft.
The shore coater according to claim 2. Said rearmost turning radius of cultivating claws provided on the having a greater turning radius than the radius of rotation of the plurality of cultivating claws arranged on the front row side of the tilling claws provided in the last column 4. A wrinkle coater according to claim 2 or 3 , characterized in that: The pretreatment unit has a cover body that covers the periphery of the tillage nail,
The cover body, ridge coating machine according to claim 1, characterized in that part covering the top and sides of the rotation locus of said cultivating claws are formed in a tapered shape in which the diameter as the front is reduced. Said cultivating shaft of the pre-processing unit, ridge coating machine according to any one of claims 1 to 5, characterized in that inclined to the old ridge side in a plan view.

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