JP4639333B2 - Paddy weeder - Google Patents

Description

  The present invention relates to a paddy field weeding machine, and more particularly to weeding weeds that grow around seedlings planted in the paddy field.

Conventionally, as a device for weeding a weed that grows around a seedling of a paddy field, Japanese Patent Application Laid-Open No. 2002-204603 discloses a weeding device 1 as shown in FIG.
The weeding device 1 travels by rotating a wheel 3 by a drive source 2 and is provided with a weeding part 4 in front of the wheel 3 and pulling the riding part 5 in the rear. The weeding unit 4 includes a rotary weeding mechanism 6 that protrudes radially from the slats, a weeding rotor 7 that is disposed behind the rotating weeding mechanism 6, and a warp unit 8 that is disposed in front of the rotating weeding mechanism 6. . The angle of the rotary weeding mechanism 6 and the weeding rotor 7 with respect to the soil surface can be adjusted by an angle adjusting mechanism 9.
The operator travels on the riding part 5 of the weeding device 1 while operating the steering wheel, scrapes out the weeds with the rotary weeding mechanism 6, and removes the weeds not removed by the rotating weeding mechanism 6 with the weeding rotor 7. It is buried in the soil and killed.

However, when a plurality of weeding rotors 7 and the like are provided in parallel for a plurality of strips, it is necessary to repeatedly adjust visually so that the heights of the weeding rotors 7 and the like of the strips are aligned with each other, and the adjustment takes time. There is also. Furthermore, once the adjustment is made and the height of the weeding rotor 7 or the like is changed, the original original height becomes unknown, and it may not be possible to adjust the height appropriately for the hardness of the field. To do. Further, since the angle adjusting mechanism 9 is configured to adjust the angles of the rotary weeding mechanism 6 and the weeding rotor 7 at a time, there is a problem that it is not possible to meet the needs to adjust each member individually.
JP 2002-204603 A

  This invention is made | formed in view of the said problem, and makes it the subject to make it possible to adjust the height etc. of each member which performs weeding appropriately and simply.

In order to solve the above-mentioned problems, the present invention provides a plurality of weeding means for grounding on the soil surface in parallel with the body supported by the wheel, each of the weeding means being grounded on the soil surface. And a paddy field weeding machine for a plurality of strips provided with a rotor disposed behind the sled and grounded to the soil surface,
The weeding means includes a sled height adjusting unit capable of adjusting the height of the sled, a sled angle adjusting unit capable of adjusting a tilt angle in the front-rear direction of the sled, and a rotor height capable of adjusting the height of the rotor. And an adjustment portion,
The warp height adjustment unit, the warp angle adjustment unit, and the rotor height adjustment unit are each provided with an adjustment scale and a reference position mark indicating the standard position scale. We provide paddy weeders.

With the above-described configuration, by using the reference position marks of the sled height adjusting unit and the sled angle adjusting unit as marks, the plurality of sleds provided in parallel for the plurality of strips are all adjusted to the same scale position, so that each sled is adjusted. Can be easily and accurately aligned at the same height and angle. And, using the reference position mark of the rotor height adjustment part as a mark, by aligning all the rotors provided in parallel for the plurality of strips at the same scale position, each rotor can be easily adjusted to the same height. It becomes possible to align accurately.
In addition, the relative height relationship between the front and rear sleds and the rotor can be easily adjusted so that the height relationship is maintained properly by aligning the marks with the reference position mark as a mark. And the adjustment can be performed accurately.

  In addition, the sled follows the soil surface to keep the weeding means at a certain height from the soil surface, and the sled and rotor act to bury and kill weeds in the paddy soil. In addition, it is preferable to install these sleds and rotors at positions where weeds can be embedded between the strips of seedlings that have been planted.

Preferably, the weeding means includes a rotary blade member arranged behind the sled and projecting radially from the blade, the ground blade being grounded to the soil surface.
With the above configuration, the rotating blade member spontaneously rotates due to the resistance when the wing plate portion contacts the soil surface during traveling of the paddy field weeding machine, and the weeds having shallow roots are scraped out from the soil. In addition, it is preferable that the rotary blade member is installed at a position where weeds growing between seedlings (strains) on the same line or in the vicinity thereof can be scraped.

  If the scale for adjustment and the reference position mark are formed as holes or engraved marks on the components of each adjustment section, they will not be peeled off due to mud, water, etc., and costs will be reduced, compared to the case where scale labels are attached. This is preferable. Further, it is more preferable that the sled is attached with a spring claw projecting obliquely backward to draw weeds from the soil.

The sled height adjuster is configured to slidably attach a slide piece fixed on the sled side to a mounting piece fixed on the fuselage side, and the scale is vertically mounted on either the mounting piece or the slide piece. It is preferable that a plurality of holes are formed or engraved and the reference position mark is engraved or formed.
The sled angle adjustment unit attaches a protruding piece fixed to the sled side to a slide piece fixed to the airframe side so as to be able to swing, and the scale is placed in a swinging direction on either the slide piece or the protruding piece. It is preferable that a plurality of holes are formed or engraved and the reference position mark is engraved or formed.
The rotor height adjustment unit is configured to attach an inclined tilting piece fixed on the rotor side to an attachment piece fixed on the airframe side so as to be tiltable in the vertical direction, and the scale is mounted on either the mounting piece or the tilting piece. It is preferable that a plurality of stepped notches are provided in the tilt direction and the reference position mark is engraved or drilled.

  As is clear from the above description, according to the present invention, the height and angle are adjusted by using the reference position mark as a mark by the sled height adjusting unit, the sled angle adjusting unit, and the rotor height adjusting unit, and used for multiple strips. By aligning a plurality of sleds and rotors arranged side by side at the same scale position, it becomes possible to easily and accurately align the height and angle of the sled for each strip and the height of the rotor. Further, with respect to the relative height relationship between the front and rear sleds and the rotor, the height relationship between each other can be easily and accurately optimized by aligning the reference position marks as marks.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a 4-row paddy weeding machine 10 for weeding seedlings grown around seedlings planted in paddy fields.
The paddy weeder 10 is a riding type, and the front wheel 12 and the rear wheel 13 that support the vehicle body 11 that runs longitudinally are rotated by a motor 17, and the steering handle 18 and the driver's seat 19 are provided in the center of the rear part of the vehicle body 11. It has been. Between the front wheel 12 and the rear wheel 13, weeding means 14 is attached to the body 11 so as to be movable up and down via a link member 39 and a hydraulic cylinder 49, and the weeding means 14 is suspended by a tension spring 16, An upper end hook portion 16 a of a tension spring 16 is attached to the position adjusting means 15 fixed to the body 11.

  The weeding means 14 includes a base 20 to which the tension spring 16 and the link member 39 are connected, a frame 21 extending in the front-rear direction below the base 20, and a sled connected to the frame 21 so as to be movable up and down and tiltable. 22, a spring claw 23 made of an elastic metal rod formed to protrude obliquely rearward from both sides of the sled 22, and fixed to the frame 21 via a mounting piece 32 in a state of being shifted back and forth on the left and right sides. The rotary blade member 24 and the rotor 25 fixed so as to be moved up and down by tilting with respect to the frame 21 are provided.

  The sled 22 warps the front end 22a upward, and the rear end 22b is inclined obliquely downward to form a knurled claw. As shown in FIGS. 3 and 4, the sled 22 has a pair of left and right projecting pieces 28 projecting from the upper surface thereof so that the plate surface direction is the front-rear direction, and a U-shaped slide between the projecting pieces 28 A piece 27 is sandwiched, and the slide piece 27 is externally fitted to an attachment piece 26 that hangs down from the tip of the frame 21 so as to be vertically slidable. A plurality of bolt holes 26a are provided on the front surface of the mounting piece 26 at predetermined intervals in the vertical direction, thereby also serving as a vertical adjustment scale. Further, a triangular reference position mark 26b indicating the standard scale of the vertical adjustment scale / bolt hole 26a is engraved on the mounting piece 26. The slide piece 27 is provided with a long hole 27a having a long axis extending in the vertical direction, and the bolt 29 is fastened to any one of the vertical adjustment graduations / bolt holes 26a through the long hole 27a. The slide piece 27 is fixed to the mounting piece 26 so as to be adjustable, and a sled height adjusting portion 50 is formed.

  As shown in FIG. 3, angle adjustment graduations 27b are formed in a circular arc shape at predetermined intervals on the side wall of the slide piece 27, and among these angle adjustment graduations 27b, a triangular shape indicating the graduations at the standard position is provided. The reference position mark 27c is engraved. A protrusion 28 a is provided at the upper end of the protruding piece 28 to point to the angle adjusting scale 27 b, and the protruding piece 28 is fastened to the side wall of the slide piece 27 with a pair of upper and lower bolts 30 and 31. Further, the bolt hole drilled in the slide piece 27 to fasten the upper bolt 30 is an arc-shaped long hole 28a so that the sled 22 can be tilted with respect to the slide piece 27 with the lower bolt 31 as a fulcrum. The slant angle adjustment unit 51 is attached.

  A pair of front and rear rotary blade members 24 are arranged obliquely behind the sled 22, and a rotary shaft portion 33 that is rotatably connected to the lower end of the mounting piece 32, and a plurality of sheets that protrude radially from the rotary shaft portion 33. A wing plate portion 34 is provided, and the axial direction of the rotary shaft portion 33 is inclined in the left-right direction. The wing plate portion 34 protrudes downward from the rotary shaft portion 33 and protrudes obliquely upward from the lower end portion 34a to the tip end portion 34b, and is curved in the circumferential direction.

  The rotor 25 is arranged behind the sled 22 and obliquely behind the rotary blade member 24, and as shown in FIGS. 3 and 5, a plurality of rod-like members 35 are arranged circumferentially at intervals. The cage is formed into a virtual cylinder and is attached to the tilting piece 36 so as to be rotatable. At the rear end of the frame 21, the mounting piece 37 protrudes rearward and downward, and the tilting piece 36 is tilted and fixed with a bolt 38 through a long hole 37 a formed in the mounting piece 37, so that the rotor height adjusting portion 52. It is said. The rear upper edge of the mounting piece 37 is cut out into a plurality of steps to form a vertical adjustment graduation 37b, and a triangular reference position mark 37c indicating the standard graduation is engraved. .

  The position adjusting means 15 rotatably fixes a screw shaft 41 having a screw engraved on the outer periphery thereof to a housing 40 fixed to the body 11 via a bracket portion 40 a, and an adjustment handle 42 is attached to the upper end of the screw shaft 41. The lifting / lowering rod 43 is fixed to the lower portion of the housing 40 and the screw shaft 41 is fitted and screwed into the lower portion of the housing 40. The adjustment handle 42 is rotated to rotate the screw shaft 41. It is configured. The lower ends of the first tilting piece 44 and the second tilting piece 45 are rotatably fixed to the body 11 by a fixed shaft 46, and the upper end of the first tilting piece 44 is rotatable to the lower end of the lifting rod 43. It is fixed and tilted with the fixed shaft 46 as a fulcrum while the intersecting angle between the first tilting piece 44 and the second tilting piece 45 remains unchanged.

The tension spring 16 connects the upper end hook portion 16 a to the protrusion 45 a at the tip of the second tilting piece 45, and connects the lower end hook portion 16 b to the protrusion 20 a of the base 20 of the weeding means 14.
The hydraulic cylinder 47 has an upper end fixed to the airframe 11, and a fixed portion 49 at the lower end of the piston portion 48 is connected to the link member 39. The link member 39 has a rear end rotatably attached to the connecting portion 11 a of the body 11 and a front end rotatably attached to the connecting portion 20 b of the base 20 of the weeding means 14.

Next, weeding work using the paddy weeder 10 will be described.
As shown in FIG. 2, with the front wheels 12 and the rear wheels 13 of the paddy weeder 10 placed on the soil cultivator DK, the operator lowers the weeding means 14 by turning the adjustment handle 42 to bring the sled 22 into the water surface. The lower surface of the soil DH is grounded, and the spring claws 23, the rotary blade member 24, and the rotor 25 are disposed in a state where they are slightly submerged than the soil surface DH.

  When traveling from this state, the sled 22 follows the soil surface DH while the ground pressure is stably maintained by the vibration absorbing action of the tension spring 16 during traveling. The spring claws 23 are slightly dive from the soil surface DH, so that weeds with shallow roots are scraped. As shown in FIG. 6, the rotary blade member 24 is pivotally supported in an inwardly inclined state facing the left and right, and the inner wing plate portion 34 contacts the soil surface DH when the paddy weeder 10 is traveling. By doing so, it spontaneously rotates, and the weeds Z having a shallow root are scraped out on the surface of the slat 34. The rotor 25 rolls on the soil surface DH so that the weeds are covered with soil and killed.

Next, height / angle adjustment of the sled 22 and height adjustment of the rotor 25 will be described.
As shown in Table 1, when the field is hard, it is preferable to raise the height of the rotor 24, raise the height of the sled 22, and lower the angle of the sled 22 forward. When the field is standard, it is preferable that the height of the rotor 24 and the height / angle of the sled 22 are all matched with the reference position marks 26b, 27c, and 37c. When the field is soft, it is preferable to lower the height of the rotor 24, lower the height of the sled 22, and raise the angle of the sled 22 forward. An example in which the height of the rotor 25 and the height / angle of the sled 22 are not appropriate is shown in Table 2.

  Specifically, for example, when the field is hard, the bolt 29 is moved up and down while the slide piece 27 is slid upward in the sled height adjusting unit 50 so that the upper side is positioned one step above the reference position mark 26b. Fasten to the adjustment scale and bolt hole 26a. In addition, the bolt 30 is fastened in a state in which the sled 22 is inclined forward and downward so that the projection 28a points to the angle adjustment scale 27b on the right side of the reference position mark 27c in the sled angle adjusting unit 51. Further, in the rotor height adjusting portion 52, the tilting piece 36 is tilted upward and fastened with a bolt 38 so that the upper side of the tilting piece 36 is along the vertical height adjusting scale 37b that is one step higher than the reference position mark 37c. .

  In this way, the height / angle of all the sleds 22 provided in parallel for a plurality of strips by using the vertical adjustment scale / bolt hole 26a, the angle adjustment scale 27b, and the vertical adjustment scale 37b as marks. And the height of the rotor 25 can be easily and accurately aligned. Further, with respect to the relative height relationship between the pair of sleds 22 and the rotor 25, the height relationship between the reference position marks 26b and 37c is adjusted appropriately so that the mutual height relationship is maintained. It can be adjusted easily and accurately to sag.

It is a side view of the paddy weeder of the embodiment of the present invention. It is a side view which shows a use condition. It is an enlarged side view of a weeding means. It is an enlarged front view of a weeding means. It is a top view which shows the use condition of a paddy field weeder. It is drawing explaining the effect | action of a rotary blade member. It is drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Paddy weeder 11 Airframe 12 Front wheel 13 Rear wheel 14 Weeding means 15 Position adjusting means 16 Tension spring 17 Motor 18 Control handle 19 Driver's seat 21 Frame 22 Sled 23 Spring claw 24 Rotary blade member 25 Rotor 26a Vertical adjustment scale and bolt hole 26b, 27c, 37c Reference position mark 27b Angle adjustment scale 37b Vertical adjustment scale 50 Warp height adjustment part 51 Warp angle adjustment part 52 Rotor height adjustment part
DH soil surface DK soil cultivator N seedling S water surface Z weed

Claims (2)

A plurality of weeding means for grounding on the soil surface and performing weeding are provided in parallel with the aircraft supported by the wheels, and each weeding means is arranged on the soil surface and a sled arranged behind the sled A paddy weeder for multiple strips having a rotor grounded to the surface,
The weeding means includes a sled height adjusting unit capable of adjusting the height of the sled, a sled angle adjusting unit capable of adjusting a tilt angle in the front-rear direction of the sled, and a rotor height capable of adjusting the height of the rotor. And an adjustment portion,
The warp height adjustment unit, the warp angle adjustment unit, and the rotor height adjustment unit are each provided with an adjustment scale and a reference position mark indicating the standard position scale. Paddy weeder.   2. The paddy weeding machine according to claim 1, wherein the weeding means includes a rotary blade member arranged behind the sled and projecting radially from the blade, the ground blade contacting with the soil surface.

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