JP5241555B2 - Ditcher - Google Patents

Description

  The present invention relates to a ditching machine capable of preventing the occurrence of defects in which soil is deposited by a soil blower plate and soil is accumulated near the upper end of a groove side surface, regardless of the soil quality of the soil in the field.

  Conventionally, for example, a ditcher described in Patent Document 1 below is known.

  As shown in FIG. 12, the conventional trench excavator includes a work machine main body connected to a traveling vehicle such as a tractor, a vertical rotation shaft 1 rotatably provided on the work machine main body, and a rotation shaft 1. A spiral grooving blade 2 for digging up soil in the field provided on the lower outer peripheral side of the earth, and a soil blower plate 3 for flying the soil dug up by the grooving blade 2 provided on the upper outer peripheral side of the rotary shaft 1 It has.

  And the upper end (terminal) 2a of the grooving blade 2 is located at a position below the farm scene and away from the front surface in the rotational direction of the soil blower plate 3.

Japanese Utility Model Publication No. 63-40534 (Fig. 2 etc.)

  For this reason, in the conventional grooving machine, for example, when the soil in the field is clayey, there is a problem that the soil flying by the soil blower plate 3 is poor and the soil accumulates near the upper end of the groove side surface. is there.

  The present invention has been made in view of the above points, and it is possible to prevent the occurrence of a problem in which soil is deposited near the upper end of the groove side surface, regardless of the soil quality of the soil in the field. An object is to provide a ditcher that can be used.

請 Motomeko 1 wherein the grooving machine, a machine body, a rotary shaft rotatably provided in this machine body, provided on the rotary shaft, spiral grooves Hoha raising digging field soil And a soil blower plate for flying the soil dug up by the grooving blade, the upper end of the grooving blade is located close to the soil blower plate, skip plate has a mounted portion which projects toward the rotating direction forward from the main plate portion and the main plate portion, the upper end side of the grooving blade, the one in which it is mounted to the mounting portion.

The groove digger according to claim 2 is a work machine main body, a rotary shaft rotatably provided on the work machine main body, a spiral grooving blade provided on the rotary shaft and digging up soil in a field. A soil blower plate provided on the rotating shaft and flying the soil dug up by the grooving blade, wherein an upper end of the grooving blade is located close to the soil blower plate, the position of the upper end of the blade, but which is adjusted finely with respect to the soil skip plate.

The groove digger according to claim 3 is a work machine main body, a rotary shaft rotatably provided on the work machine main body, a spiral grooving blade provided on the rotary shaft and digging up soil in a field. And a soil blower plate for flying the soil dug up by the grooving blade, wherein the upper end of the grooving blade is located close to the soil blower plate, plate, where at least a part of the rotation direction front are bent to face radially outward and obliquely upward of the rotating shaft.

The groove digger according to claim 4 is the groove digger according to claim 3, wherein the earth blower plate has a main body plate portion and a mounted portion that protrudes forward in the rotational direction from the main body plate portion. The upper end side of the digging blade is attached to the attached portion.

According to a fifth aspect of the present invention, in the grooving machine according to the third or fourth aspect, the position of the upper end of the grooving blade can be finely adjusted with respect to the soil blower plate.

According to the invention of 請 Motomeko 1, since the upper end of the grooving blades are located close to the plate skip soil, irrespective of the soil of the field soil, a good jumping soil by soil skip plate, It is possible to prevent the problem of soil accumulation near the upper end of the groove side, and because the upper end side of the grooving blade is attached to the mounted part of the earth blower plate, careless deformation of the upper end side of the grooving blade Etc. can be prevented.

According to the invention of claim 2 , since the upper end of the grooving blade is located close to the soil blower plate, the soil blown by the soil blower plate is good regardless of the soil quality of the soil, and the groove It is possible to prevent the occurrence of soil accumulation near the upper edge of the side surface, and because the position of the upper edge of the grooving blade can be fine-adjusted with respect to the soil blower plate, variations in the length of the grooving blade, etc. Can be easily accommodated.

According to the invention of claim 3 , since the upper end of the grooving blade is located close to the soil blower plate, the soil blown by the soil blower plate is good regardless of the soil quality of the soil in the field. Since it is possible to prevent the occurrence of problems that soil accumulates near the upper end of the side surface , and the soil blower plate is bent so that at least a part of the front surface in the rotational direction faces radially outward and obliquely upward of the rotational shaft, The flying of the soil by the soil blower plate is further improved, and it is possible to effectively prevent the occurrence of the problem that the soil accumulates near the upper end of the groove side surface.

It is a side view of the non-working state of the ditcher concerning one embodiment of the present invention. It is a top view of the non-working state of a ditching machine same as the above. It is a top view of the forward working state of a ditcher same as the above. It is a top view of the reverse working state of a ditching machine same as the above. It is a rear view of the principal part of a ditch machine same as the above. It is a top view of the principal part of a ditch machine same as the above. It is a front view of the principal part of the ditcher which concerns on other embodiment of this invention. It is a side view of the principal part of a ditch machine same as the above. It is a perspective view of the earth breaking board of a ditcher same as the above. It is a front view of the principal part of the ditcher which concerns on other embodiment of this invention. It is a top view of the principal part of a ditch machine same as the above. It is a rear view of the principal part of the conventional grooved machine.

  An embodiment of a trench machine according to the present invention will be described with reference to the drawings.

  1 to 4, reference numeral 10 denotes a trench digger, which is connected to the rear part of a tractor (not shown) that is a traveling vehicle that travels in a field, for example, while grooving while moving in the traveling direction. It is a towing type grooving machine.

  The trench excavator 10 is connected to the rear portion of the tractor, and forms a concave groove in the farm field in the working unit 11 while moving forward (advancing direction indicated by an arrow in FIG. 3) by the forward traveling of the tractor. (See FIG. 3). The grooving machine 10 is capable of return work. At the end of the grooving work at the corner of the field, the grooving machine 10 is connected to the rear part of the tractor and is moved backward (indicated by an arrow in FIG. 4). A concave groove is formed in the farm field by the working unit 11 (see FIG. 4).

  FIGS. 1 and 2 show a non-working state (standby state) in which the working unit 11 is located at a standby position (non-working position) behind the tractor. Work) is possible.

  As shown in FIGS. 1 to 4, the ditcher 10 includes a work machine main body 12 connected to a three-point link part (work machine lifting device) at the rear of the tractor.

  The work machine body 12 includes a fixed frame 13 connected to a three-point link portion at the rear of the tractor, a movable frame 15 provided on the fixed frame 13 through a parallel link 14 so as to be movable in the left-right direction, The movable frame 15 has a support frame 16 which is provided so as to be able to rotate about 180 degrees around the vertical axis 17 and also serves as a transmission case for supporting the working unit 11.

  Further, the work machine body 12 rotates the offset cylinder 21 that is a driving means for offsetting the working unit 11 by the parallel movement of the movable frame 15 with respect to the fixed frame 13, and the support frame 16 together with the working unit 11 with respect to the movable frame 15. A rotating cylinder 22 that is a driving means to be moved and a lock mechanism 23 that locks the parallel link 14 to the fixed frame 13 are provided.

  The fixed frame 13 has a three-point connecting portion 25, and the three-point connecting portion 25 includes a top mast 27 having a top pin 26 and a pair of left and right lower arms 29 having a lower pin 28. The fixed frame 13 has an input shaft holding portion 30, and an input shaft 31 for inputting power from the tractor is rotatably provided on the input shaft holding portion 30. The power from the input shaft 31 is supplied to the working unit 11 by the power transmission means 35 constituted by the joint 32, the gear in the transmission case 33 of the support frame 16, the chain in the chain case 34 of the support frame 16, and the like. Communicated.

  As shown in FIGS. 1, 5, and 6, the working unit 11 includes a rotating shaft 41 that is a driving rotating shaft having an axial direction in the vertical direction, and the rotating shaft 41 is a support frame of the working machine body 12. 16 is rotatably provided and protrudes downward from the support frame 16. The rotating shaft 41 is driven and rotated in a predetermined rotating direction (clockwise in FIG. 6) by the power from the power transmission means 35 in a state where the axial direction coincides with the vertical direction at the time of digging work.

  The periphery of the upper outer peripheral side of the rotating shaft 41 is covered with a cover body 42, and the cover body 42 is fixed to the support frame 16 of the work machine body 12. The cover body 42 has a discharge port 43 that is an opening that opens in the direction of travel. The cover body 42 includes a substantially arc-shaped side plate portion 44 and a substantially semicircular upper plate portion 45. Yes. The lower end of the cover body 42 is positioned slightly above the farm scene (the ground surface) at the time of digging work.

  On the outer peripheral side of the lower part of the rotating shaft 41, a spiral groove digging blade 46 for digging up soil in the field to form a groove is provided. In addition, on the outer peripheral side of the upper portion of the rotary shaft 41, that is, on the outer peripheral side of the portion of the rotary shaft 41 located in the cover body 42, the soil dug up by the groove digging blade 46 is discharged by the cover body 42. For example, a substantially rectangular plate-like soil blow-off plate (bounce plate) 47 is provided so as to protrude from the outlet 43 so as to be discharged (released) in the direction of travel.

  At the time of grooving work, the upper end (end) 46a of the grooving blade 46 is close to the front surface in the rotational direction of the soil blower plate 47 at a position above the farm scene (the ground surface) and contacts the front surface in the rotational direction. Located in a state.

  Here, the rotating shaft 41 has a shaft main body portion 51 whose outer peripheral surface is formed in a cylindrical surface over the entire length in the axial direction, and projects from the lower outer peripheral surface of the shaft main body portion 51 and is positioned at an interval in the spiral direction. A plurality of substantially plate-like attachment parts 52 and a single plate-like protrusion that protrudes from the upper outer peripheral surface of the shaft body 51 and is positioned along the radial direction of the rotary shaft 41; And a certain protruding plate portion 53.

  The earth blower plate 47 has a base end portion (inner end portion) attached to the protruding plate portion 53 of the rotating shaft 41 by attachment means (not shown) made of bolts, nuts and the like along the rotation direction front surface of the protruding plate portion. It has a substantially rectangular plate-like main body plate portion 56 that is detachably attached and is positioned along the radial direction of the rotating shaft 41 and has a free end portion at the tip end portion (outer end portion). The front surface in the rotational direction, which is one surface of the main body plate portion 56, is a working surface 57 that comes into contact with the soil, and the upper end 46a of the grooving blade 46 is in contact (contact) with the lower end portion at the tip of the working surface 57. )doing.

  That is, for example, the earth blow plate 47 has a mounted plate portion 58 that is a substantially rectangular plate-shaped mounted portion that protrudes forward in the rotational direction from the lower end portion of the distal end portion of the working surface 57 of the main body plate portion 56, An upper end, which is the upper end side of the grooving blade 46, is detachably attached to the mounted plate portion 58 by an attaching means 63 including a bolt 61 and a nut 62. An upper end (upper end surface) 46a of the grooving blade 46 is attached. Is in contact with a predetermined portion of the working surface 57.

  An elongated hole 59 having a longitudinal direction in the protruding direction of the attached plate portion 58 is formed in the attached plate portion 58 of the earth blower plate 47, and an outer portion of the shaft portion 61a of the bolt 61 is formed at the upper end portion of the grooving blade 46. A circular mounting hole 60 having a diameter substantially the same as the diameter is formed, and the shaft portion 61a of the bolt 61 is inserted into the mounting hole 60 and the long hole 59 facing each other, and a nut is inserted into the shaft portion 61a of the bolt 61. 62 is screwed together. For this reason, it is possible to change the position of the shaft portion 61a of the bolt 61 in the long hole 59, and the position of the upper end 46a of the grooving blade 46 within the range in which the position of the shaft portion 61a can be changed. Fine adjustment is possible with respect to the action surface 57 of the main body plate portion 56 of the plate 47.

  The grooving blade 46 has a plurality of divided blade members 64 that are detachably attached to the attached plate portion 52 of the rotating shaft 41. The divided blade member 64 positioned at the top of the plurality of divided blade members 64 has a lower end attached to the attached plate portion 52 of the rotary shaft 41 so as to be detachable, and an upper end portion attached to the earth removing plate 47. Attached to the attachment plate 58 is detachable. Then, the upper end of the uppermost divided blade member 64 is in contact with a predetermined location on the action surface 57 of the main body plate portion 56 of the soil blower plate 47.

  Further, as shown in FIGS. 1 and 2, the working unit 11 is a groove formed by the digging blade 46 that is fixed to the support frame 16 of the work machine main body 12 and is located behind the digging blade 46 in the traveling direction. It has a groove shaping body 65 for shaping. The groove shaping body 65 has left and right shaping plate portions 66 that are spaced apart from each other.

  As described above, the working unit 11 includes the rotary shaft 41, the cover body 42, the grooving blade 46, the earth blower 47, the groove shaping body 65, and the like.

  Next, the operation and the like of the trench machine 10 will be described.

  When performing the grooving operation, as shown in FIG. 3, the working unit 11 is positioned at the forward operation position, and the grooving machine 10 is set to the forward operation state.

  When the entire grooving machine 10 is moved forward by the forward traveling of the tractor, the grooving blade 46 rotates with the rotating shaft 41 to dig up soil in the field to form a groove.

  At this time, the soil dug up by the groove digging blade 46 is blown off at the action surface 57 of the main body plate portion 56 of the soil blow-off plate 47 rotating together with the rotary shaft 41, and passes through the discharge port 43 of the cover body 42. It is discharged toward the direction of travel. In other words, most of the excavated soil excavated by the grooving blade 46 is blown to a desired position laterally away from the groove by the soil blowing action by the action surface 57 of the earth blowing plate 47 (see FIG. 5).

  Further, at the position behind the grooving blade 46 in the traveling direction, the groove formed by the grooving blade 46 is shaped by the groove shaping body 65 to obtain a groove having a desired shape.

  At the corner of the field, the ditcher 10 is switched to the reverse operation state shown in FIG.

  According to the grooving machine 10, the upper end 46a of the grooving blade 46 is close to the working surface 57 which is the front surface in the rotational direction of the main body plate portion 56 of the soil blower plate 47 at a position above the farm scene during grooving work. Therefore, even if the soil of the field is clayey, for example, even if the soil of the field is clayey, the soil flying by the soil blow-off plate 47 is good, and the groove side surface of the obtained groove is It is possible to appropriately prevent the occurrence of a problem that soil accumulates near the upper end.

  In addition, since the soil flying by the soil blower plate 47 is good, the soil dug up by the grooving blade 46 is hard to fall into the groove, and the traction resistance does not increase. The moving speed in the direction of travel of 10 can be increased, and grooving work can be performed efficiently.

  Furthermore, since the upper end side of the grooving blade 46 is attached to the mounted plate portion 58 of the earth blower plate 47, inadvertent deformation or the like of the upper end side of the grooving blade 46 can be prevented, and the durability of the grooving blade 46 is improved. Can be improved.

  In addition, since the position of the upper end 46a of the grooving blade 46 can be finely adjusted with respect to the working surface 57 of the main body plate portion 56 of the soil blower plate 47, the length of the grooving blade 46 based on manufacturing errors, etc. It is possible to easily cope with variations and displacement of the mounting hole 60.

  In order to make the soil blowout plate 47 even better, for example, as shown in FIGS. 7 to 9, for example, at least a part of the front surface in the rotation direction, that is, for example, the tip side (outside) is rotated. The shaft 41 may be bent so as to face radially outward and obliquely upward.

  7 to 9 is a single plate member that is bent so that the tip side faces the rear in the rotational direction along a fold line a along the right-down slanting direction when viewed from the front in the rotational direction. It is composed of. That is, the main body plate portion 56 of the earth blower plate 47 includes a first plate portion 71 whose base end portion is attached to the protruding plate portion 53 of the rotating shaft 41 and is positioned along the radial direction of the rotating shaft 41, and the first plate portion 71. The plate portion 71 is integrally provided at the tip portion (the portion of the folding line a) and intersects with the first plate portion 71 at an acute angle (for example, 5 degrees to 30 degrees). And a second plate portion 72 facing outward and obliquely upward. The second plate portion 72 has a projecting upper end portion 73 positioned above the upper end of the first plate portion 71.

  Further, the number of the earthing plates 47 is arbitrary, and may be a plurality, for example, two, three, or four or more. In this case, a groove for one earthing plate 47 of the plurality of earthing plates 47 is provided. The upper end 46a of the digging blade 46 is located close to the digging blade 46. That is, for example, as shown in FIGS. 10 and 11, two projecting plate portions 53 are provided at an interval of 180 degrees on the upper outer peripheral surface of the shaft main body 51 of the rotating shaft 41, and the soil blower plate 47 is provided on each projecting plate portion 53. The structure provided with may be sufficient. Note that, as shown by a two-dot chain line in FIG. 11, a soil blow-off plate 47 may be provided at a position shifted from the position at intervals of 180 degrees.

  Further, for example, although not shown, a configuration in which three protruding plate portions 53 are provided at intervals of 120 degrees on the upper outer peripheral surface of the shaft main body portion 51 of the rotary shaft 41, and a soil blow-off plate 47 is provided on each protruding plate portion 53. Etc.

  Further, the upper end 46a of the ditching blade 46 is not limited to a configuration in which the upper end 46a of the earth blower plate 47 is positioned in contact with and in contact with the front surface in the rotation direction. A configuration may be adopted in which 46a is located close to the front surface in the rotational direction of the soil blower plate 47 and is not in contact with the front surface in the rotational direction through a slight gap.

10 Groove machine
12 Work implement body
41 Rotation axis
46 Grooving blade
47 Blasting board
56 Main plate
58 Mounted plate that is mounted

Claims (5)

The work machine body,
A rotary shaft rotatably provided on the work machine body;
A spiral grooving blade that is provided on this rotating shaft and digs up the soil in the field,
A soil blower plate provided on the rotating shaft and flying the soil dug up by the grooving blade;
The upper end of the grooving blade is located close to the earth blower plate,
The earth blowing plate has a main body plate portion and a mounted portion that protrudes forward from the main body plate portion in the rotation direction,
The grooving upper side of the blade, the groove diggers you characterized in that attached to the attached portion. The work machine body,
A rotary shaft rotatably provided on the work machine body;
A spiral grooving blade that is provided on this rotating shaft and digs up the soil in the field,
A soil blower plate provided on the rotating shaft and flying the soil dug up by the grooving blade;
The upper end of the grooving blade is located close to the earth blower plate,
The grooving position of the upper end of the blade, grooving machine characterized that it is adjusted finely with respect to the soil skip plate. The work machine body,
A rotary shaft rotatably provided on the work machine body;
A spiral grooving blade that is provided on this rotating shaft and digs up the soil in the field,
A soil blower plate provided on the rotating shaft and flying the soil dug up by the grooving blade;
The upper end of the grooving blade is located close to the earth blower plate,
The soil skip plate, grooving machine you at least a part of the rotation direction front are bent to face radially outward and obliquely upward of the rotating shaft. The earth blower plate has a main body plate portion and a mounted portion that protrudes forward from the main body plate portion in the rotation direction,
The upper end side of the grooving blade is attached to the attached portion.
The ditcher according to claim 3. The position of the upper end of the grooving blade can be fine-adjusted with respect to the earth blower plate.
The trench excavator according to claim 3 or 4, characterized by the above.

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