JP2006204162A - Device for weeding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem such that conventionally, since in a weeding device for weeding furrow grooves by rotary plowing claws arranged in up and down direction, the weeds are apt to wind around its driving shaft, it becomes necessary to take time and labor for removing the wound weeds after weeding works. <P>SOLUTION: This device for weeding is equipped with a transmission case 6 having a build-in transmission mechanism at the rear part of a riding husbandry machine as freely lifting up and down and driving shafts 7, 7 arranged in left and right direction at the lower part of the case 6, and supporting plate-shaped cutters 17, 17... arranged around the driving shafts 7, 7 in left and right direction. Also, at the front direction of the transmission case 6, a covering member 22 covering the front direction of the case 6 and also being extended up to the rear direction of the driving shaft 7, while making a contact with the surface of soil, is installed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a configuration of a weeding device for weeding weeds growing in a furrow (gutter groove).

Conventionally, as a weeding device provided for agricultural vehicles, a plurality of cultivate claws are provided at the rear of the vehicle body, and rotary tilling claws are provided on both the left and right sides of the cultivate claws. It is known that the surface is cut and the weeds are cut by weeding claws on both the left and right sides (Patent Document 1).
JP-A-9-37604

  In the conventional weeding device, the grooving portion is weeded by the rotary tilling claw, so that weeds can easily enter the gap between adjacent claws even when the tilling claw is rotating, especially around the rotation base of the claw. After the work, it took time and effort to remove these weeds. Therefore, the present invention is intended to provide a weeding device that does not impair the weeding efficiency and does not cause grass winding.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention of claim 1 is provided with a drive shaft (7, 7) arranged in the left-right direction at the lower part of the transmission case (6) in which the transmission mechanism is housed. A weeding device characterized by supporting a plate-like cutter (17, 17,...) To be arranged.
(Operation of claim 1)
In the invention of claim 1 configured as described above, when the gutter groove is moved while the drive shaft (7, 7) is rotationally driven, the plate-like cutter (17, 17...) And the weeds or the soil surface. After the root is cut, it is dropped into the soil.

According to the invention of claim 2, a cover member (22) is provided in front of the transmission case (6) so as to cover the front of the case (6) and extend to the rear of the drive shaft (7) while being in contact with the soil surface. The weeding device according to claim 1, wherein the weeding device is provided.
(Operation of claim 2)
In the invention of claim 2 configured as described above, the cover member (22) prevents weeds positioned in front of the transmission case (6) until the drive shaft (7) passes therethrough.

  Thus, in the invention of claim 1, since the plate-like cutters (17, 17,...) Arranged in the left-right direction are rotated around the drive shaft (7), the rotary tilling claws provided side by side in the vertical direction as in the prior art. Compared with the structure provided with, the situation where weeds approach the drive shaft (7) is prevented as much as possible, and the entanglement on the coaxial (7) is also suppressed.

  According to the invention of claim 2, the front of the transmission case (6), that is, the portion where the plate-like cutters (17, 17,...) Are not located is also covered with the cover member (22) up to the rear of the drive shaft (7). Therefore, like the above, the situation where weeds approach the drive shaft (7) is prevented as much as possible, and the tangling to the coaxial (7) is also suppressed.

The present invention will be described below with reference to the drawings.
FIG. 1 shows a side view of a riding management machine equipped with a weeding device, FIG. 2 shows a side view of the weeding device, and FIG. 3 shows a rear view of the weeding device.

As shown in FIG. 1, a herbicidal device 3 is connected to the rear portion of the vehicle body of the riding management machine 1 via a lifting device 2 so as to be lifted and lowered.
The weeding device 3 includes a transmission box 4 for transmitting the PTO power of the riding management machine 1, a plurality of transmission cases 6, 6... Drive shafts 7, 7 projecting in the left-right direction, cage-type weeders 8, 8 attached to the left and right sides of the drive shafts 7, and the upper and upper outer sides of each weeder 8 An upper cover 9 that covers the upper cover 9 and a tail wheel 11 that is attached to the frame portions of the upper covers 9 and 9 so as to be vertically adjustable. A weeding claw 10 is attached to the lower part of each transmission case 6.

  2 and 3, the weeder 8 includes a large-diameter inner ring body 12 that is rotated adjacent to the transmission case 6 and a small-diameter outer ring body 13 that is rotated on the side of the eaves 19. Are provided between the left and right wheel bodies 12 and 13, and mounting cylinders 14, 14... To the drive shaft 7 and a cylindrical body 16. A plurality of cutters (hereinafter, cutter blades 17, 17...) Are attached along the left-right direction, and the whole is formed into a cage shape.

  Each cutter blade 17 is centered from a lateral blade portion 17a that is inclined so as to have a receding angle α from the inner peripheral side to the outer peripheral side in a side view, and from the left and right outer end portions of the lateral blade portion 17a. A vertical blade portion 17b which is bent toward the portion and has an inner peripheral side end attached to the outer wheel 13 and a plate body of the blade 17 extending along the front-rear direction. Yes.

  In the weeding device 3 configured as described above, as shown in FIG. 3, for example, the horizontal blade portion 17a is positioned in the groove portion 21 of the basket 19 in which crops 18 such as soybeans are planted, and the vertical blade portion 17b is provided. The blades 17, 17... Are rotated around the drive shaft 7 in the downcut direction (in the direction of arrow A in FIG. 2) while being positioned at the lower end of the inclined surface of the flange 19.

  Then, the weeds are cut and crushed while being scraped downward at the slope portion of the lateral blade portion 17a with the receding angle α, or the slope portion and the bottom portion (hatched portion in the figure) of the ridge 19 are cut shallowly by the vertical blade portion 17b. The weeds and soil remaining on the slope are scraped inside and cut and crushed.

  As described above, the cutter blades 17, 17... Arranged in the left-right direction are rotated around the drive shaft 7 and a receding angle is formed on the front side surface of the horizontal blade portion 17 a, so that weeds approach the drive shaft 7. By doing so, it cuts, that is, weeds, to prevent tangling to the coaxial 7. As a result, weeding can be performed continuously without interruption.

  The weeding machine 8 rotates the rotational speed of the drive shaft 7 at a higher speed than the speed of the riding management machine, specifically the rotational speed of the front and rear wheels, and the rotational diameter is larger than the height of the weeds. Set the diameter.

Next, another embodiment of the weeding device 3 will be described with reference to FIGS.
The weeding device 3 shown in FIGS. 4 and 5 has a configuration in which the outer end portion of the blade 17 is bent upward in accordance with the shape of the bottom portion of the groove 21.

  Specifically, in the same manner as described above, a large-diameter inner ring body 12 that is rotated adjacent to the transmission case 6 is provided, and a small-diameter outer ring body 13 that is rotated on the side of the flange 19 is provided. Are provided with mounting arms 14, 14... And cylinders 16 on the drive shaft 7, and a plurality of cutter blades 17, 17... Are arranged between the outer peripheral portions of the inner ring body 12 and the outer ring body 13 along the left-right direction. Installed, the whole is a cage type.

  The blade 17 is configured as a curved blade portion 17d by forming the inner portion into a horizontal blade portion 17c along the left-right direction, and bending the outer portion of each of the left and right horizontal blades 17 toward the center of rotation.

  Then, as shown in FIG. 5, for example, the horizontal blade portion 17c is disposed in the groove portion 21 between the ridges 19 where the crop 18 such as soybeans is planted, and the curved blade portion 17d is disposed at the lower end of the slope portion of the ridge 19. In this state, the blade 17 is advanced along the flange 19 while rotating in the down cut direction.

  Then, the weeds are cut and cut by the blade portion of the horizontal blade portion 17c, and the bottom portion of the slope portion of the ridge 19 is shaved by the curved blade portion 17d, so that weeds and soil remaining on the slope portion are cut. The weeds that have been scraped and mowed inside are covered with soil, and the weeding operation is performed while crushing the weeds by the horizontal blade portion 17c and the curved blade portion 17d.

As described above, the blade 17 outer side portion of the weeder 8 is formed in a curved shape and disposed in correspondence with the bottom of the ridge groove portion 21 so that the weeding operation can be performed while reducing the collapse of the ridge 19.
Moreover, the weeding apparatus shown in FIG. 6 and FIG. 7 is set as the structure which equips each said transmission case 6,6 ... with the space | interval part cover 22 which covers the front and the downward direction of the case 6. FIG.

  Specifically, the mounting frame 23 is supported from the upper and lower middle portions of the transmission case 6 toward the front, and the upper portion of the interval cover 22 is attached to the front end portion of the mounting frame 23.

The interval cover 22 includes a front arcuate portion 22a and a lower plate portion 22b that covers from the lower portion of the side-view weeder 8 to the rear position of the drive shaft 7.
Moreover, the said space | interval part cover 22 is comprised in leaf | plate spring shape, and will lift away from the lower end part of the braid | blades 17 and 17 when the weeding device 3 is raised like a two-dot chain line shown in FIG. ) Is pushed up by the ground so that the left and right edges of the cover come into contact with the blades 17 and 17.

  Thus, when the weeding device 3 is lifted up, the rotating weeds approaching from the front of the transmission case 6 are pushed down by the spacing portion cover 22 while preventing abnormal noises and abrasion of the blade 17 by the rotation. Thus, weeds can be prevented from coming into contact with the drive shaft 7 to prevent winding.

  Further, as shown in FIG. 8, the interval cover 22 may be configured to be biased downward by a spring 26. In the above-described configuration, the mounting frame 23 extends forward from the upper and lower middle part of the transmission case 6, the mounting plate 24 projects downward from the front end of the mounting frame 23, and the mounting plate 24 rotates in the left-right direction. A front end portion of the spacing portion cover 22 is pivotally supported via a moving shaft, and a spring 26 is interposed between the mounting plate 24 and the front end portion of the spacing portion cover 22 so that the spacing portion cover 22 is moved downward, that is, on the ground. Energize to the side.

  When the weeding device 3 is lifted by the lifting device 2, the interval cover 22 moves away from the rotating blades 17, 17,... As described above, and prevents abnormal noise and wear as described above. In addition, the durability of winding around the drive shaft 7 can be enhanced.

Further, as shown in FIGS. 9 and 10, a part or all of the inside and outside of the weeder 8 may be closed with a plate member.
Specifically, as described above, the inner ring body 12 and the small ring outer ring body 13 are provided with an arm 14 for mounting on the drive shaft 7 and a cylindrical body 16 on the inner periphery of the inner ring body 12 and the outer ring. A plurality of blades 17, 17... Are attached between the bodies 13 along the left-right direction to form a cage-type weeding machine 8, and an inner ring plate 27 having a predetermined width inside the outer peripheral portion of the large-diameter inner ring body 12. And only the central portion of the inner ring body 12 is opened, while the entire outer surface of the small-diameter outer ring body 13 is closed by the outer closing plate 28.

  Thus, weeds can enter the cage-type weeder 8 from both the left and right sides, that is, the weeds can be prevented from wrapping around the drive shaft 7 as much as possible, and the weeding operation can be performed smoothly while reducing the work load. .

Further, the weeding machine 8 shown in FIG. 11 is configured so that the working width can be adjusted to be wide or narrow.
Specifically, the large-diameter inner ring body 12 is configured with mounting arms 14, 14... And a cylindrical body 16 a, and the small-diameter outer ring body 13 is mounted on the inner peripheral portion with an arm for mounting on the drive shaft 7. 14 and the outer cylinder body 16b, and a cylindrical spacer cylinder body 16c can be detachably added with bolts and nuts between the inner cylinder body 16a and the outer cylinder body 16b. The blades 17, 17... Are connected between the inner and outer ring bodies 12 and 13 with a length corresponding to the working width.

  Thus, as shown in FIG. 11A, when one spacer cylinder 16c is added, blades 17, 17,... That fit this distance are provided between the outer peripheral portions of the inner ring body 12 and the outer ring body 13. Select and install, and configure a weeding machine 8 with a wide left and right width. Further, when configuring a wider basket type weeder 8, as shown in FIG. 11 (B), the spacer cylinder 16c is added.

Thereby, it is possible to easily cope with different wrinkle intervals depending on the region, and to perform appropriate weeding work that matches the wrinkle intervals.
The weeding device 3 shown in FIGS. 12 and 13 has a mounting frame 23 projecting from the transmission case 6, and a left and right toolbar 29 is attached to the rear of the mounting frame 23. Spatula-shaped scrapers 31, 31 located on both left and right sides of the machine 8 are attached to the tool bar 29 so as to be adjustable in the left-right direction.

  Accordingly, the left and right scrapers 31 and 31 are applied to the inclined surface portion of the ridge 19 to scrape the weeds and the soil remaining on the inclined surface portion and cover the weeds in the groove portion 21 to suppress the generation of weeds. At the same time, the finish of weeding can be cleaned.

The side view of a passenger management machine. The side view of a weeding apparatus. The rear view of the weeding apparatus which shows a working state. The side view of the weeding apparatus of another form. The rear view of the weeding apparatus of FIG. 4 which shows a working state. The side view of the riding management machine provided with the weeding apparatus which has a cover. The front view of the weeding apparatus of FIG. The side view of the weeding device which improved the weeding device of FIG. 6 partially. The side view of the weeding apparatus provided with the plate member. The front view of the weeding apparatus of FIG. (A) The rear view of the weeding apparatus set to the narrow state. (B) The rear view of the weeding apparatus set to the wide state. The side view of the weeding apparatus provided with the scraper. The rear view of the weeding apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Passenger management machine 2 Lifting device 3 Weeding device 6 Central transmission case 7 Drive shaft 8 Basket type weeder 12 Inner ring body 13 Outer ring body 14 Arm 16 Tube body 16a Inner body 16b Outer body 16c Spacer cylinder body 17 Cutter blade 22 Spacing cover

Claims (2)

A drive shaft (7, 7) arranged in the left-right direction is provided at the lower part of the transmission case (6) that houses the transmission mechanism, and a plate-like cutter (17, 7) arranged in the left-right direction around the drive shaft (7, 7) 17 ...). A front cover of the transmission case (6) is provided with a cover member (22) that covers the front of the case (6) and extends to the rear of the drive shaft (7) while contacting the soil surface. The weeding device according to claim 1.

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