JP5658925B2 - 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 machine body traveling direction. The soil of the old fence is cultivated and flipped up by the rotation of the claws, and the raised soil is applied to the old fence 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. As compared with the load to be increased, the tilling claws in the first row are easily damaged, and there is a possibility that the tilling 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-like high scooping plate having a soiling function at the tip of the claw body portion corresponding to the vertical blade portion of the tilling claw, and this scooping plate Proposes ugly claws that bring the crushed soil to the trimming section. Patent Document 4 also proposes a scooping claw that is inclined with respect to the axial direction of the tilling shaft so that the scooping plate faces the trimming unit.

  Since this scooping board is formed in a plate shape for scooping up the soil and bringing it to the trimming unit side, it is in contact with foreign matter such as stones existing in the cultivated soil and is easily affected. For this reason, the scooping claw is easy to be damaged, and the load acting on the drive unit that rotates the scooping claw also increases. So, if a large load is applied to these claws during rotation of the claw or tilling claw, the shear bolt (or shear pin) provided in the power transmission path is broken and the overload does not act on the claw or drive unit. (See Patent Document 5). According to this, when a stone or the like hits an ugly nail and is overloaded, it is possible to prevent the shear bolt from breaking and damaging the ugly nail or applying a large load to the drive unit.

JP 2002-281803 A JP 2007-282518 A Japanese Patent No. 4318965 JP 2006-101794 A JP 2006-42747 A

  However, when performing a smearing operation in a field with a lot of foreign objects such as stones, the frequency of the foreign object hitting the claw increases, so the shear bolt breaks many times during the work, and every time the shear bolt breaks The work is interrupted and the shear bolt needs to be replaced. The exchanging operation of the shear bolt is troublesome for the operator, and the work efficiency of the smearing operation is lowered due to the interruption of the operation.

  The present invention has been made in order to solve such problems, and even when the padding work is performed in a field with a lot of foreign matters such as stones, it has excellent soil crushing performance and has a large soiling effect. An object of the present invention is to provide a glazing machine provided with a pretreatment unit that is less likely to reduce efficiency.

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 that includes a trimming unit that coats the upper part and the piled soil on the cut-out old dredger, and that proceeds with the traveling of the traveling machine body to perform the dredging work, the pre-processing unit extends along the traveling direction. A tilling shaft that is rotatably supported, a tilling claw that is provided on the tilling shaft and rotates together with the tilling shaft, and a claw that is provided on the tilling shaft and that cultivates the soil cultivated by the tilling claw on the old tillage side. The scooping claw has a scooping plate portion that scoops up the soil cultivated by the tilling claw at the tip portion, and the scooping plate portion is arranged on the rotation rear side of the working area of the tilling claw, The tip of the scooping plate provided on the scooping nail It characterized in that it is arranged in a position close in the direction arrow.

  In the present invention, “extending along the traveling direction” means that the extending direction of the tilling shaft is the same as the traveling direction of the coater, or a direction inclined in the left-right direction with respect to the traveling direction of the coater. Including some cases. However, the direction orthogonal to the traveling direction is excluded.

  The tilling claw has a function of crushing the soil in the field and a function of bringing the crushed soil to the old side. Specifically, the tilling claw has a vertical blade portion and a horizontal blade portion that continuously extend from the tilling shaft, bends in the direction opposite to the rotation direction from the vertical blade portion to the horizontal blade portion, and the horizontal blade portion is vertical. Curve to one side of the blade. In addition, since this invention is provided with the claw, the horizontal blade part of a tilling nail | claw may be small in the function which brings the tilled soil to the old hail side.

  The scooping plate portion provided on the scooping claw has a function of scooping up the cultivated soil. Specifically, the scooping plate portion is formed with a scoop surface having a concave shape on the front side of the scooping claw in the rotational direction. The `` rotation rear side of the working area of the tilling claw '' where the scooping plate part of the present invention is arranged specifically refers to the rotation area of the vertical blade part and the horizontal blade part of the tilling nail when the tilling nail rotates. It is called an area, and is arranged on the rotation rear side of the tilling claw having the action area, and is arranged so as to be part of the action area in a plan view.

Specifically, the “close position” of the present invention refers to the tip of the tilling nail and the scooping plate without the tip of the tilling nail and the tip of the scooping plate crossing in the axial direction of the tilling shaft. the axial distance arrow of cultivating shaft between the parts of the tip, scoop not smaller than the distance between the inner surface of the distal end portion and the cover body of the plate portion (arc-shaped plate portion 73b in the embodiment) It will have a case where the distance in the axial direction arrow of cultivating shaft between the tip portion of the scooping plate portion provided on the pawl scooping the tip of the tilling claws is smaller than the maximum cutting width of tilling claws.

  The distance between the tip of the scooping plate portion and the inner surface of the cover body is such that the soil scooped up by the scooping plate portion is easily released along the cover body and the soil scraped up by the scooping plate portion. It is determined in consideration of increasing the amount.

  If the size of the foreign object that moves with the rotation of the tillage claw is smaller than the distance between the tip of the scoop plate and the inner surface of the cover body, the cover body will move when the foreign object moves with the rotation of the cultivation claw. If the size of the foreign object is larger than the distance between the tip of the scooping plate and the inner surface of the cover body, the foreign object will rotate by the tillage nail. If it moves with it, it is thought that there is a greater risk of hitting the cover body. For this reason, the tip of the tilling claw and the tip of the scooping plate provided on the scooping claw are arranged at a position having a distance smaller than the distance between the tip of the scooping plate and the inner surface of the cover body. Then, a foreign object having a shape larger than this distance is unlikely to be caught between the tip of the tilling claw and the tip of the scooping plate. Further, since the gap between the tip of the tilling claw and the tip of the scooping plate is located on the rear side in the rotation direction of the tilling claw, the possibility of foreign matter being caught in the gap is further reduced. For this reason, at the time of rotation of a pre-processing part, the situation where it moves in the state which the foreign material pinched | interposed between the front-end | tip part of a tilling nail | claw and the scooping board part, and collides with a cover body can be reduced. Therefore, it is possible to prevent a situation in which the claw is damaged and an overload acts on the driving unit that drives the preprocessing unit.

  In addition, it is considered that many foreign objects that move with the rotation of the tilling claw are smaller in size than the maximum cutting width of the tilling claw. For this reason, if the distance between the tip of the tilling nail and the tip of the scooping plate portion of the scooping nail is made smaller than the maximum cutting width of the tilling nail, the foreign material having a shape larger than the maximum cutting width is removed. And the tip of the scooping plate portion are less likely to be pinched. Further, since the gap between the tip of the tilling claw and the tip of the scooping plate is located on the rear side in the rotation direction of the tilling claw, the possibility of foreign matter being caught in the gap is further reduced. For this reason, at the time of rotation of a pre-processing part, the situation where it moves in the state which the foreign material pinched | interposed between the front-end | tip part of a tilling nail | claw and the scooping board part, and collides with a cover body can be reduced. Therefore, it is possible to prevent a situation in which the claw is damaged and an overload acts on the driving unit that drives the preprocessing unit.

  The cover body is configured to cover the rear side of the pretreatment unit, the side extending from the upper part to the side opposite to the old saddle side, and the front side thereof. The pretreatment section covered by this cover body rotates in the so-called downcut direction with the tilling shaft as the center of rotation, and then moves upward after moving the soil picked up by the claw claws once away from the old ridge side. And supply it to the trimming unit side. For this reason, it is possible to reliably guide the soil scooped up by the cover body and the scooping claws to the trimming unit side.

The tilling claw of the present invention has a vertical blade portion and a horizontal blade portion extending continuously from the tilling shaft, and is bent in a direction opposite to the rotation direction from the vertical blade portion to the horizontal blade portion, and the horizontal blade portion is a vertical blade. and curved on the nail side rake relative parts, the scooping plate portion of the scooping pawl, characterized in that it is arranged on an extension of the lateral edge portions of the tilling claws.

  By disposing the scooping plate portion of the scooping claw on the extended line of the horizontal blade portion of the tilling claw, a step is unlikely to occur between the scooping claw and the tip of the tilling claw in the axial direction of the tilling shaft. For this reason, it is possible to reduce the possibility of the tip of the scooping plate portion hitting a foreign object during rotation of the pretreatment portion. Moreover, the scooping board part will exist before the soil cultivated with the tilling claw moves through the horizontal blade part, and more soil can be scooped up efficiently.

The scoop nail the invention features that the rotational locus of the tip of the scoop plate portion provided in which are disposed so as to be inside the rotation locus of the tip of the tilling claws. Even if a foreign object existing in the cultivated soil hits the tilling nail when the pretreatment unit rotates, the scooping nail is disposed inside the rotation trajectory of the tilling nail, so that it is difficult for the foreign object to hit the scooping nail. When the foreign matter hits the tilling nail when the pretreatment unit rotates, the entire pretreatment body can be moved in a direction away from the foreign matter, so that the possibility of the foreign object hitting the scooping nail can be further reduced.

Further, a plurality of the tilling claws of the present invention are provided on the tilling shaft with a predetermined distance in the tilling axis direction. These tilling claws have a rotation radius of the tilling claws on the front side in the axial direction and the rotation of the tilling claws on the rear side in the axial direction. it characterized in that it is configured to be smaller than the radius.

  In this way, by configuring the rotation radius of the tilling claw on the front side in the axial direction to be smaller than the rotation radius of the tilling claw on the rear side in the axial direction, the cultivation claw in the first row becomes the cultivation claw in the second and subsequent rows. An increase in acting load can be suppressed, and damage to the first row of tilling claws can be suppressed, and tillage vibration can be made relatively small.

The cultivating shaft shall be the characterized in that it is arranged to be inclined to the old ridge side in plan view. In this way, the tilling claw provided on the tillage shaft is inclined to the old rod side in the plan view, so that it cuts obliquely with respect to the old rod and moves the soil in that direction. The direction of the soil flow can be set to the trimming unit side. For this reason, foreign matters such as stones can easily escape and there is little risk of overloading, and the flow of soil supplied to the trimming unit is smooth, and stable scouring work can be performed.

  According to the present invention, the pretreatment unit includes a tilling shaft that extends along the traveling direction and is rotatably supported, a tilling claw provided on the tilling shaft and rotating together with the tilling shaft, and a tilling claw provided on the tilling shaft. The claw has a claw to pile up the cultivated soil on the old side, and the claw has a scooping plate part that scoops up the soil cultivated by the cultivation claw at its tip, and the By arranging the tip of the tilling claw and the tip of the scooping plate provided on the scooping claw at the rotation rear side of the working area, the preprocessing unit is located at a position close to the tilling shaft in the axial direction. During rotation of the claw, it is difficult for foreign objects such as stones to hit the tip of the claw, and the possibility of foreign matter being caught between the tips of both claws can be reduced. For this reason, it is possible to reduce the possibility of vibration and damage caused by the claw itself directly contacting the foreign matter, and foreign matter is caught between the tip portions of both claws, and this foreign matter collides with the cover body covering the pretreatment portion. As a result, it is possible to provide a coater equipped with a pre-processing unit that has excellent crushing performance, has a large soiling effect, is difficult to damage scooping nails, and does not easily reduce the work efficiency of the coating process. it can.

The pre-processing part provided in the dregs coater concerning one embodiment of this invention is shown, The figure (a) is a fragmentary sectional top view of a pre-processing part, The figure (b) is the side surface of a pre-processing part. FIG. 1 is a plan view of a wrinkle coater according to an embodiment of the present invention. 1 shows a front view of a wrinkle coater according to an embodiment of the present invention. The partial cross-sectional top view of the operation part of the drapery machine concerning one embodiment of this invention is shown. The partial side view of the pre-processing part for demonstrating arrangement | positioning of the claw with respect to the tilling nail | claw concerning one embodiment of this invention is shown. The pre-processing part which concerns on one embodiment of this invention, and shows the pre-processing part of the comparison object structure where the distance of a scooping board part and a tilling nail tip part is large, the figure (a) is a pre-processing part of comparison object structure FIG. 4B is a side view of the pretreatment portion of the structure to be compared. The side view of the pre-processing part for demonstrating the function of the pre-processing part of the coating machine concerning one embodiment of this invention is shown. The figure for comparing and explaining the function of the pre-processing part concerning one embodiment of the present invention and the pre-processing part of the structure for comparison is shown, (a) is a side view of the present invention, (b) ) Is a side view of the structure to be compared. The figure for comparing and explaining the function of the pre-processing part concerning one embodiment of the present invention and the pre-processing part of the structure for comparison is shown, (a) is a side view of the present invention, (b) ) Is a side view of the structure to be compared. BRIEF DESCRIPTION OF THE DRAWINGS The figure for demonstrating the shear bolt provided in the plastering machine concerning one embodiment of this invention is shown, The figure (a) is a fragmentary perspective view of the power transmission mechanism part in an offset frame, The figure (B) is sectional drawing of a pre-processing part.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode of a coater according to 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. 2 (plan view), the hull coater 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear portion of the traveling machine body 90, and according to the forward movement of the traveling machine body 90. It is the one to perform the haze painting work. The wrinkle coater 1 is mounted on the traveling machine body 90 and is mounted on the left and right sides of the mounting part 10 by the mounting part 10 having the input shaft 4 to which power from the traveling machine body 90 is input and the turning cylinder 3 provided on the mounting part 10. An offset mechanism 20 that can move in the direction and a rotation fulcrum O that extends in the vertical direction are provided on the moving end side (rear end side) of the offset mechanism 20, and the rotation fulcrum O rotates in the horizontal direction around the rotation fulcrum O. And a working unit 50 that is movably disposed and 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 provided at a connecting member 23 that is rotatably provided at the rear end portion of the offset frame 21. The offset mechanism unit 20 forms 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 the expansion and contraction of the revolving cylinder 3 that is pivotally connected between the rear end portion and the left end portion of the hitch frame 11. A power transmission mechanism 28 (see FIG. 10A) 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 is connected to a lower portion of the driven shaft 29 so as to be coaxial with the driven shaft 29 and extend downward. 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.

  The trimming unit 80 will be further described with reference to FIG. 4. The polyhedral drum 82 is attached to a rotating shaft 81 that extends in the left-right direction and is rotatably supported, and is attached to the right end 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 connected to and 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 that is a rotation shaft of the pretreatment unit 61 is coaxially connected to a 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 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. 7, the pre-processing unit 61 has an arrow that moves the tip part of the tiller claw 67 described later from the upper part to the lower part of the old tack K when the tip part of the tilling claw 67 is in a position facing the old tack K. It rotates in the X direction, that is, the down cut direction.

  As shown in FIG. 4, the pretreatment unit 61 is provided with a tilling shaft 62, a plurality of tilling claws 67 that are radially attached to the outer periphery of the tilling shaft 62 and rotate together with the tilling shaft 62, and a plurality of tilling claws 67. It has a claw claw 69 which is arranged with a predetermined distance on the rear side in the axial direction of the tilling shaft 62 and piles up the soil cultivated by the tilling claw 67 on the old hail side.

  As shown in FIG. 1A (partial cross-sectional plan view), FIG. 1B (side view), and FIG. 5, the tilling claw 67 has a predetermined distance from the front side to the rear side of the tilling shaft 62. Two tilling claws 67 are attached to each row with a phase difference of 180 degrees in the circumferential direction of the tilling shaft 62 for each row. The tilling claw 67 is detachably attached to a holder 62a protruding from the outer periphery of the tilling shaft 62 through fastening means such as a bolt 62b.

  The tilling claw 67 has a vertical blade portion 67b and a horizontal blade portion 67c continuously extending from an attachment base portion 67a attached to the holder 62a, and bends in a direction opposite to the rotation direction from the vertical blade portion 67b to the horizontal blade portion 67c. The horizontal blade portion 67c is bent to one side with respect to the vertical blade portion 67b to form a rake face 67d on the inner side. In the present embodiment, the side blade portion 67c is curved backward. Each of the vertical blade portion 67b and the horizontal blade portion 67c is formed with a blade edge portion 67e having a substantially constant width, and the blade edge portion 67e is a single blade.

  When this tillage claw 67 is rotated, it enters into the soil from the vertical blade portion 67b and cuts the soil in the left-right direction with respect to the traveling direction, and the horizontal blade portion 67c enters into the soil and moves the soil in the front-rear direction. The cultivated soil is held by the rake face 67d of the horizontal blade portion 67c and is released to the old ridge after the horizontal blade portion 67c comes out of the soil. Is done.

These tilling claws 67 are configured such that the rotation radius Rf of the tilling claw 67 on the front side in the axial direction of the tilling shaft 62 is smaller than the rotation radius Rr of the tilling claw 67 on the rear side in the axial direction (FIG. )reference). For this reason, the tillage resistance at the time of the padding operation is reliably dispersed, the vibration of the tilling can be made relatively small, and a stable padding operation can be performed. The second row of tilling claws 67 are arranged with a phase shift of about 90 degrees with respect to the first row of tilling claws 67. The phase shift is not limited to 90 degrees, and may be smaller than the same phase or 90 degrees.

  In addition, since the tillage shaft 62 is inclined to the old ridge side in a plan view, these tilling claws 67 cut obliquely with respect to the old ridge and move the soil in that direction. The direction can be set to 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.

  A claw 69 is provided on the rear side of these tilling claws 67. The claw claw 69 has a claw body portion 69a continuously extending from a base portion attached to a holder 62a projecting from the tilling shaft 62 on the base end side, and a rotation direction front side edge portion of the tip portion of the claw body portion 69a. It has the scooping plate part 69b attached along the edge. The scooping claw 69 is attached to the holder 62a via the bolt 62b in the same manner as the tilling claw 67.

  Further, the side extending from the rear side and the upper side of the tilling claw 67 and the claw claw 69 to the side portion opposite to the old hail side and the front side thereof are covered with a cover body 73. The cover body 73 will be further described with reference to FIG. 3. The front plate portion 73a and the rear plate portion 73c that cover the front side and the rear side of the tilling claws 67 and the scooping claws 69, and the front plate portion 73a and the rear plate portion 73c. And an arcuate plate portion 73b that covers the side of the tilling claw 67 and the scooping claw 69 from the upper outer peripheral side to the side opposite to the old hail side. The old ridge side has a soil cover adjustment guide cover 73d and a side cover 73e.

  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 the tilling claws 67 and the claw 69, and the lower portion of the front plate portion 73a is tilled. It is located below the shaft 62. The rear plate portion 73c is formed so as to extend in a fan shape from the upper part on the rear side of the rotation trajectory of the tilling claws 67 and the scooping claws 69 to the lower side of the tilling shaft 62.

  The arc-shaped plate portion 73b is connected along the peripheral edge portions of the front plate portion 73a and the rear plate portion 73c, and the end portion on the opposite side of the arc-shaped plate portion 73b from the tilling shaft 62 of the pretreatment unit 61 is connected. Also, the upper side of the arc-shaped plate portion 73 b extends to a position just above the tilling shaft 62 with a gap along the outside of the rotation trajectory of the tilling claw 67. For this reason, when the pretreatment part 61 rotates, the soil scooped up by the scooping claw 69 moves upward along the inner side of the arcuate plate part 73b and is released from the old heel side end of the arcuate plate part 73b. Is done.

Nail body portion 69a is to curved toward a rotational direction of the pre-processing unit 61, the mounting surface portion having a predetermined width in the rotational direction front edge of the tip side is formed. The attachment surface portion is bent in the rotation direction , and the scooping plate portion 69b is attached to the attachment surface portion in a curved state along the attachment surface portion. Therefore, the claw 69 is transported as if holding the soil, and the soil held after the scooping plate portion 69b reaches the upper part of the rotation area is released to the old anchor side.

  The scooping plate portion 69b is disposed on the rotation rear side of the working area 68 (see FIG. 1A) of the tilling claw 67 (see FIG. 1B and FIG. 5). The action area 68 refers to the rotation area of the vertical blade part 67 b and the horizontal blade part 67 c during rotation of the tilling claw 67. In this embodiment, the scooping plate part 69 b is the rear of the rotation claw 67 having the action area 68. It is arrange | positioned so that it may be applied to a part of action area | region 68 in planar view (refer Fig.1 (a)). For this reason, the scooping plate portion 69b can surely scoop up the soil cultivated by the tilling claws 67 as the scissor coater 1 moves forward, and the scooping plate portion 69b vibrates with a foreign object such as a stone. There is almost no risk of damage. Note that the scooping plate portion 69 b may be disposed so that all of the scooping plate portion 69 b is accommodated in the action area 68 in a plan view of the preprocessing portion 61.

  Further, the scooping plate portion 69b is disposed at a position where the tip end portion thereof and the tip end portion of the tilling claw 67 approach each other as viewed in the axial direction of the tilling shaft 62 (see FIG. 1B). That is, in the scooping plate portion 69 b, the distance A in the axial direction of the tilling shaft 62 between this tip portion and the tip portion of the tilling claw 67 is such that the tip portion of the scooping plate portion 69 b and the arcuate plate of the cover body 73. It arrange | positions in the position smaller than the distance B between the inner surfaces of the part 73b. Further, the scooping plate portion 69b is arranged on the extension line E of the horizontal blade portion 67c of the tilling claw 67 so that the rotation trajectory of the tip portion of the scooping plate portion 69b is inside the rotation trajectory of the tip portion of the tilling claw 67. (See FIG. 5).

  As shown in FIG. 5, the scooping plate portion 69 b is disposed on an extension line E indicated by a two-dot chain line of the horizontal blade portion 67 c of the tilling claw 67. The extension line E is a tangent line that is in contact with the tip of the blade edge portion 67e of the side blade portion 67c. In the embodiment, a case where the extension line E passes through the distal end side of the scooping plate portion 69b is shown. The position where the extension line E passes may be the tip of the scooping plate portion 69b.

In this way, the scooping plate portion 69b of the scooping claw 69 is disposed at a position where the tip portion thereof and the tip portion of the tilling claw 67 are close to each other in the axial direction of the tilling shaft 62, and the tip portion of the scooping plate portion 69b. so that the rotation locus of is inside the rotational locus of the tip of the tilling claws 67, because it is disposed on the extension line E of the lateral edge portion 67 c of the tilling claws 67, as shown in Figure 8 (a) In addition, when a foreign matter R such as a relatively large stone is present in the field, even if the foreign matter R hits the tilling claw 67 during the rotation of the pretreatment unit 61, the foreign matter R is less likely to hit the ugly claw 69. .

  On the other hand, as shown in FIG. 8B, the distance A ′ in the axial direction of the tilling shaft 62 between the tip of the scooping plate portion 69b and the tip of the tilling claw 67 is the same as that shown in FIG. In the case of the pre-processing unit 61 ′ configured to be larger than the corresponding distance A of the pre-processing unit 61 shown, the rotation locus of the tip portion of the scooping plate portion 69 b is located inside the maximum rotation locus of the tilling claw 67. However, the foreign object R easily hits the tip of the scooping plate portion 69b, and the scooping claw 69 is easily damaged.

  The pre-processing unit 61 ′ has substantially the same configuration as the above-described pre-processing unit (see FIGS. 1 (a) and 1 (b)), as shown in FIGS. 6 (a) and 6 (b). However, the difference is that the distance A ′ between the tip of the scooping plate portion 69 b and the tip of the tilling claw 67 is larger than the corresponding distance A of the pretreatment portion 61. This distance A ′ is larger than the distance B between the distal end portion of the scooping plate portion 69 b and the inner surface of the arcuate plate portion 73 b of the cover body 73. Since this pre-processing unit 61 ′ has substantially the same configuration as the pre-processing unit 61, the same aspect as the pre-processing unit 61 is denoted by the same reference numeral and description thereof is omitted.

  Further, as shown in FIG. 9A, the foreign matter R having a dimension larger than the distance B between the tip end portion of the scooping plate portion 69b and the inner surface of the arcuate plate portion 73b of the cover body 73 is transferred to the pretreatment portion. In the case of being conveyed upward along with the rotation of the tilling claw 67 and the scooping claw 69, the tip of the scooping plate portion 69 b is disposed at a position close to the tip of the tilling claw 67, so that the foreign matter R is in these positions. It is difficult to enter between the tips of the. For this reason, there is little possibility that the foreign substance R hits the lower end part of the arcuate plate part 73 b and the tip part of the scooping plate part 69 b comes into contact with the foreign substance R, and the foreign substance R is released to the outside of the cover body 73. Therefore, it is possible to suppress a situation in which the tip of the scooping plate portion 69b contacts the foreign object R and the scooping claw 69 is damaged.

  On the other hand, as shown in FIG. 9B, in the case of the pre-processing unit 61 ′, even if the rotation locus of the tip portion of the scooping plate portion 69 b is arranged inside the maximum rotation locus of the tilling claw 67, Since the distance between the front end of the plate portion 69b and the front end of the tilling claw 67 is increased, the foreign matter R easily enters between the front end portions of these claws. For this reason, there exists a possibility that the front-end | tip part of the scooping board part 69b may contact | abut the foreign substance R in the state which the foreign material R contact | abutted to the lower end part of the circular-arc-shaped board part 73b, and there exists a possibility that the scooping nail | claw 69 may be damaged. In the worst case, the drive system such as the power transmission mechanisms 28 and 65 may be damaged.

  When the padding operation is performed by the padding machine 1 configured as described above, the soil in the field is cultivated and inverted by the tilling claws 67 of the pre-processing unit 61 as shown in FIG. It is held by the ugly nail 69 and released to the old heel side. The released soil is smeared on the old basket by the trimming unit 80 (see FIG. 4) to form a shaped new basket.

  Here, as described above, the pretreatment unit 61 has the scooping plate portion 69b of the scooping claw 69 arranged on the rotation rear side of the working area of the tilling claw 67, and the tip portion of the scooping plate portion 69b of the scooping claw 69 and the tilling. The tip of the claw 67 is disposed at a close position with a distance A in the direction of the 62-axis direction of the tilling shaft, and the rotation locus of the tip of the scooping plate portion 69b is inside the rotation locus of the tip of the tilling nail 67. It is arranged on an extension line E (see FIG. 5) of the horizontal blade portion 67c of the tilling claw 67. For this reason, when the pre-processing unit 61 rotates, the foreign matter R such as stones existing in the field is less likely to hit the scooping plate portion 69b, and the risk of the scooping claw 69 being damaged can be reduced.

  In this way, since the scooping claw 69 is disposed at an appropriate position with respect to the tilling claw 67, the scissor coating machine 1 may damage the scooping claw 69 or may be damaged by an overload acting on the drive system. The risk of doing it is small. However, in order to prevent damage to the claw claw 69 and the drive system more reliably, when a large load is applied to the pretreatment unit 61, the power transmission to the drive system is interrupted, and power to the claw claw 69 and the tilling claw 67 is blocked. A shear bolt may be provided so as to interrupt the transmission.

  For example, as shown in FIG. 10A (perspective view), a sprocket 31 is connected via a shear bolt 30 to a driven shaft 29 of a power transmission mechanism 28 provided in an offset frame. In this way, when a stone or the like collides with the scooping claw 69 or the tilling claw 67 of the pretreatment unit 61 and a large load is applied, the overload is transmitted to the driven shaft 29 via the power transmission mechanism 65 or the like, and the shear bolt 30 is broken. For this reason, it is possible to reliably prevent the claw 69, the tilling claw 67, and the drive system of the pretreatment unit 61 from being damaged.

  Further, as shown in FIG. 10B (cross-sectional view), a cylindrical rotation support body 70 is rotatably fitted on the tilling shaft 62 of the pretreatment unit 61 and provided on the outer periphery of the rotation support body 70. Further, the tilling claw 67 and the scooping claw 69 may be fixed to the holder 62 a with a bolt 62 b and the rotation support 70 may be fixed to the tilling shaft 62 via the shear bolt 30. In this way, when a stone or the like collides with the scooping claw 69 or the tilling claw 67 of the pretreatment unit 61 and a large load is applied, the overload is transmitted to the shear bolt 30 via the rotary support 70 and the shear bolt 30 is applied. To break. For this reason, it is possible to reliably prevent the claw 69, the tilling claw 67 and the power system connected thereto from being damaged.

  As described above, when the scooping claw 69 is disposed at an appropriate position with respect to the tilling claw 67 and the shear bolt 30 is provided in the scissor coating machine 1, the shear bolt 30 is broken during the scoring operation. As a result, the interruption of the glazing operation is reduced, and the replacement work of the shear bolt 30 is reduced. For this reason, it is possible to suppress a reduction in the work efficiency of the glazing operation.

  Moreover, since the pre-processing part 61 has the tilling nail | claw 67 which has the vertical blade part 67b and the horizontal blade part 67c, and the scooping claw 69 provided with the scooping board part 69b at the front-end | tip part, it is excellent in soil crushing performance and is soiled. Great effect. Further, since the claw 69 is disposed at an appropriate position with respect to the tilling claw 67 as described above, there is little possibility that the claw 69 is damaged. For this reason, even when the padding work is performed in a field with a large amount of foreign matter R such as stones, the pretreatment unit 61 is excellent in crushed soil performance, has a large soiling effect, and can suppress a reduction in work efficiency of the padding work.

  Further, the distance A in the axial direction of the tillage shaft 62 between the tip portion of the scooping plate portion 69 b and the tip portion of the tilling claw 67 is arranged at a position that is smaller than the maximum cutting width W of the tilling claw 67. Has been.

If it does in this way, foreign materials, such as a stone smaller than the maximum cutting width W of tilling nail 67, will move inside cover body 73 with rotation of tilling nail 67. Further, the foreign matter larger than the maximum cutting width W of the tillage claw 67 is released to the outside of the cover body 73 as the tillage claw 67 rotates. Therefore, foreign matter larger shape than the maximum cutting width W is less likely to caught between the tip portion and the scoop plate portion 69 b of the tip portion of the tilling claws 67. Further, since the gap between the tip of the tilling claw 67 and the tip of the scooping claw 69 is located on the rear side in the rotation direction of the tilling claw 67, the possibility of foreign matter being caught in the gap is further reduced. For this reason, when the pretreatment unit 61 is rotated, the foreign object having a shape larger than the maximum cutting width W moves between the tip of the tilling claw 67 and the tip of the scooping claw 69 and collides with the cover body 73. The fear can be reduced.

  However, when a foreign object having a size substantially the same as the maximum cutting width W is sandwiched between the tip portions of both claws, the foreign object may collide with the cover body 73 as the pretreatment unit 61 rotates. At this time, when the maximum cutting width W of the tilling claw 67 is larger than the distance B between the tip of the scooping plate portion 69b and the inner surface of the arcuate plate portion 73b of the cover body 73, the tip of the scooping plate portion 69b. When the distance A between the head and the tip of the tilling claw 67 is set to a dimension equal to or less than the distance B (A ≦ B), a foreign substance having a width W is sandwiched between the tip of the tilling claw 67 and the tip of the scooping claw 69. If W ≦ B, the trapped foreign matter moves to the inside of the cover body 73 with the rotation of the pre-processing unit 61, and the possibility that the foreign matter collides with the cover body 73 can be reliably reduced. . In consideration of the width W and the distance B, the distance A is about 20 to 60 mm.

DESCRIPTION OF SYMBOLS 1 Spider coater 61 Pretreatment part 62 Cultivation shaft 67 Cultivation claw 67b Vertical blade part 67c Horizontal blade part 69 Scooping claw 69b Scooping board part 73b Arc-shaped board part (cover body)
80 trimming section 90 traveling body E extension line K old rail

Claims (3)

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 pretreatment unit extends along the traveling direction and is rotatably supported, a tilling claw provided on the tilling shaft and rotating together with the tilling shaft, and a tilling claw provided on the tilling shaft by the tilling claw. With crawling nails that pile up the soil that has been placed on the old side,
A plurality of the tilling claws are provided on the tilling shaft with a predetermined distance in the tilling axis direction, and have a vertical blade portion and a horizontal blade portion continuously extending from the tilling shaft, and the vertical blade portion from the vertical blade portion While curving in the direction opposite to the rotation direction over the horizontal blade portion, the horizontal blade portion is bent toward the claw side in the tilling axis direction with respect to the vertical blade portion,
The scooping claw has a scooping plate portion that scoops up the soil cultivated by the tilling claw at its tip, and a rotation region of the scooping plate portion is formed by each horizontal blade portion of the plurality of tilling claws. is arranged to fit within the total rotation range that,
A tipper of the tilling claw and a tip end of the scooping plate portion provided on the scooping claw are disposed at positions close to each other in the axial direction of the tilling shaft. 2. The cocoon coating according to claim 1, wherein the plurality of tilling claws are configured such that the rotation radius of the tilling claw on the front side in the axial direction is smaller than the rotation radius of the tilling claw on the rear side in the axial direction. Machine. The said tilling axis | shaft is arrange | positioned so that it may incline to the old ridge side in planar view, The cocoon coater of Claim 1 or 2 characterized by the above-mentioned.