JP4006383B2 - Medium tillage weeding equipment in cultivator - Google Patents

Description

The present invention relates to a middle tillage weeding device in a cultivator, and particularly to one using upright and receding tines whose lower ends are bent to the right and left.

Medium-plowing weeds cultivate and loosen the top soil between the furrows and strains that are hardened to penetrate the air and rainwater required by the crops and microorganisms after sowing and transplanting, and grow naturally in the furrows. The removal of weeds that hinder the growth of crops is one of the important management tasks in the growth process of crops.

There is a cultivator as an agricultural machine used for the management work. And as a part used for cultivating weeds of cultivators, for example, Hidenobu Shoji, introduction to agricultural mechanics (published February 20, 1971, Yokendo Co., Ltd. 12th edition, pp. 219 to 221; In Chapter 10, Section 2 Cultivator), medium tillage and weeding blades are described.

The medium plow is usually made of carburized steel with a thickness of 3 mm or more and a Shore hardness of 55 degrees or more so that it is sharp and has good durability, and has a blade width of 3-8 cm and a plowing depth of 5-6 cm. The upper and lower ends that cultivate the surface are of a concavely curved rectangle with a protruding triangle. Many weeding blades are mainly flat blades that cut the topsoil shallowly and horizontally, and there are double-edged and single-edged blades.

Conventionally, many ideas and inventions related to cultivators have been proposed. For example, Japanese Utility Model Publication No. 7-3846 discloses a scratching nail and a chuck bracket for a slide shank to be attached to a central bone beam of a cultivator. This scratching claw is equipped with a middle tillage blade at the lower end of the mounting handle, and the slide shank can adjust the position of the middle tillage blade on the left and right of the middle bone beam by extending and contracting to the outside, changing the tillage width It is.
Utility Model Announcement No. 3846, 1995 Hidenobu Shoji, Introduction to Agricultural Machinery (published February 20, 1971, Yokendo 12th Edition, pages 219 to 221)

The middle tillage nail in the conventional cultivator has a blade width of 3 to 8 cm, and the tilling width per one middle tillage nail is slightly larger than the blade width. Therefore, there is a demand for easily and easily expanding the tilling width and tilling depth without replacing the middle tilling nail. Moreover, the conventional weeding blade cuts the roots of weeds on the surface layer, and it is difficult to cut the roots in the deep part. Also, the attachment of the weeding blades involved the trouble of removing and replacing the middle tillage nail.

  Therefore, the present invention is provided with a tine for middle plowing grass that can be adjusted easily and easily, and is attached to the outer side of the middle plow to increase the crushed width and crushed depth, and enables weed cutting in the deep part. It is a challenge to try to solve that.

Conventionally, slide shanks are provided horizontally on the front right side and the middle left side of the center beam that runs along the center line of the furrows so as to be extendable and fixable horizontally and outward, and the outside of these slide shanks. A middle tilling claw is provided in the forward direction at the lower end of the mounting handle projecting downward from the end, and the middle tilling hook is directed in the forward direction at the lower end of the mounting handle projecting downward from the rear end of the center beam. The cultivator provided is known.

The present invention relates to the above-described known cultivator, wherein a tine holder is detachably attached to the upper outer surface of the front and intermediate attachment handles, and is cut at the front edge on the left and right tine holders in the forward direction. The lower left bent upright tine and the lower right bent upright tine, which formed a blade and gave a penetration angle to the lower bent portion, were vertically inserted and fixed to be adjustable in height, and used as a middle plowing weeding device in a cultivator.

In addition, the tine holders on the left and right sides of the forward direction are each formed with a slanting downward inclined part behind the upright part, a cutting edge is formed at the front edge of the slanting downward sloping part, and a penetration angle is given to the lower bent part. The lower left turn retractable tine and the lower right turn retractable tine were inserted up and down and fixed so as to be adjustable in height.

Further, a slide shank is provided on the front right side and the middle left side of the center beam so as to be horizontally extendable and fixable perpendicularly to the center beam, and a mounting handle protruding downward from the rear end of the center beam. In the cultivator provided with the middle tiller in the forward direction at the lower end, a tine holding body provided with a tine insertion hole at the upper and lower sides of the slide shank on the right side of the front part and the left part of the middle part is detachably attached, the lower end to form a cutting edge on the front edge of the rectangular steel plate and forming obliquely downward right bend, and the lower right bend upright tines gave penetration angle forward downward, the lower rectangular steel plate from the intermediate portion bent obliquely rearward, to form a cutting edge on the front edge of the bent portion, to form a lower end portion downwardly left bend, a lower left bend backward shaped tines gave penetration angle forward downward, The serial bottom right bend upright tines on the outside, and the upper half portion superposed on the left and right inserted and height adjustably secured vertically to the tine insertion hole of the right side of the tine holder.

Then, a cutting edge is formed at the front edge of the rectangular steel plate, the lower end is formed at an obliquely downward left-curved portion, a lower left-curved upright tine with a penetration angle in the forward downward direction, and the rectangular steel plate downward from the middle portion bending obliquely rearward, so as to form obliquely downward right bend the lower end to form a cutting edge on the front edge of the bent portion, and a lower right bend backward shaped tines gave penetration angle forwardly downward, wherein Lower left bend upright tine with the lower left bend upright tine on the outside, upper half is overlapped on the left and right and inserted into the tine insertion hole of the left tine holding body up and down and fixed in an adjustable manner , the lower left bend upright tine and the lower right bend A retractable tine, with the lower left bent upright tine on the outside, the upper half is overlapped on the left and right, and the tine holder of the right tine holder is inserted vertically into the tine holder and fixed in an adjustable manner. Also as a device It is.

Intertillage herbicidal device in Luke Ruchibeta put the present invention, height adjustably provided lower end right bent upright tines via the forward right tine holder has intertillage nail the tillage width the center beam rear portion In addition to this, it is possible to easily increase the tillage width and to perform herbicidal action.

Similarly, since the lower end left-curved upright tine is provided via a tine holding body on the left side in the forward direction so as to be adjustable in height, the plowing width can be easily increased by adding the plowing width to the middle plow at the rear end of the center beam. It is possible to perform herbicidal action.

In addition, the lower-end left-handed upright tine and the lower-end right-handed upright tine can be inserted into the left-hand tine holder in the forward direction and the tine holder on the right-hand side in the forward direction, respectively. Loose middle tillage depth and weeding depth can be changed easily.

  In addition, the lower end left bent upright tine and the lower end right bent upright tine are formed with a cutting edge at the front edge and given a penetration angle at the bent portion at the lower end. A lower end left turn and right turn upright tine can enter the tillage.

The present onset Ming, the lower portion left bend backward shaped tine and a lower end right bending backward shaped tine forming the obliquely downward inclined part at the rear of the upright portion, the tine carrier in each forward right and left of the tine holder It is inserted in the top and bottom and fixed to be adjustable in height. And the cutting edge was formed in the front edge part of these tine, and the penetration angle which inclines the bending part of a lower end part to a front downward direction was given. This diagonally downward downward inclined portion reduces the cutting resistance to the cultivated soil, and the bent portion at the lower end portion cuts into the cultivated soil by the penetration angle inclined downward in the forward direction.

In the present invention , a middle tiller is attached in the forward direction to the lower end of a mounting handle projecting downward from the rear end of the center beam, and expands and contracts outward on the right side of the front part and on the left side of the middle part perpendicularly and horizontally to the center beam. A shank holder is attached to the outside of the outer end of the slide shank that can be fixed , and the upper half of the lower end left bent upright tine and the lower end right bent backward tine are overlapped on the left and right, and the left shank holder shank It is inserted through the insertion hole up and down and fixed so as to be adjustable in height . That is, a wide plowing width and a weeding width can be obtained by positioning the lower end of the lower left bent upright tine and the lower end of the lower right bent back tine. Further, the depth of the lower end left bent upright tine and the lower end right bent retracted tine to the cultivated soil can be easily adjusted by a simple operation of loosening the fixing to the tine holding body.

  In addition, since the combination of the lower end left-turning upright tine and the lower end right-turning receding tine to the tine holding body can be changed into the lower end right-turning upright tine and the lower end left-turning receding tine, By selecting a combination as appropriate, a suitable medium tillage action can be obtained. .

The cultivator is optimally provided with slide shanks on the right side of the front part of the center beam and on the left side of the intermediate part, which are perpendicular to the center beam and can be extended and fixed horizontally outward. Then, a tine holding body in which a tine insertion hole is formed in the vertical direction is attached to the outer end portion of the slide shank, and attached to the lower end portion of the attachment handle projecting downward from the rear end portion of the center beam in the forward direction. the right outer side of intertillage nails, and a lower end right bend upright tine and the lower left bend backward shaped tine, the lower right bend upright tines outwardly, superimposed upper half portion on the left and right, tine insertion of the right tine carrier mounted in vertically hole, similarly to the left outer side of intertillage claws of the center beam rear portion, and a lower end left bend upright tine and the lower right bend backward shaped tines, the bottom left bent upright tines outwardly, the upper half part superposed right and left, mounted one above the tine insertion hole of the left side of the tine holder, the tine width in addition to the width of intertillage nail, with increasing tillage width and depth in the cultivators beta, allowing herbicidal.

Also, remove the mounting pattern and Intertillage claws of the front and middle portion of the center beam, the the slide shank outer end in the installed tine holder, the lower end right bent upright tine and the lower Tanhidari bend backward shaped tine on the left and right By mounting side by side, it is possible to obtain tilling, plowing depth and weeding width, weeding depth, that is, wide working width and working depth by adding the right and left bending tine working width.

Next, an embodiment of the present invention will be described with reference to the drawings. In the description, the symbol F in the figure is a display when viewed in the forward direction, and the left and right are viewed in the forward direction. FIG. 1 is a rear perspective view of a cultivator provided with a first embodiment of the present invention, and FIG. 2 is a left side view of an essential part of FIG. 1 and 2, the cultivator 1 includes a tool bar 3 having a mast 2 connected to a hydraulic three-point support device of a tractor at a front portion. Reference numeral 4 denotes a channel vertical girder, which is fixed to the lower portion of the tool bar 3 by bolts 5a and 5b (see FIG. 2) with a clamp 5 while adjusting a horizontal interval.

At the front end and the rear end of the channel stringer 4, the upper ends of the swing links 6 and 7 are pivotally attached 6a (see FIG. 2) and 7a, respectively. Reference numeral 12 denotes a center bar, and lower ends of the swing links 6 and 7 are pivoted 6b and 7b to U-shaped frames 10 and 11 fixed to the front portion and the intermediate portion, respectively. The links 6 and 7 and the center bar 12 form a parallelogram link, and the center bar 12 moves up and down in parallel to the channel stringer 4.

Reference numeral 8 denotes an arcuate guide, the lower end portion of which is pivotally attached to the lower end portion of the swing link 6, the upper end portion slidably passes through the middle portion of the channel string 4, and a stopper 8a is provided at the upper end portion. Yes. Reference numeral 9 denotes a compression coil spring, which is loosely fitted on the outer periphery of the arcuate guide 8 and whose upper end surface is in contact with the lower surface of the channel stringer 4 and always presses the center beam 12 downward. This type of configuration is known as Utility Model Publication No. 7 of 1995, “Automatic Height Control Device for Cultivators”.

FIG. 3 is a schematic plan view of FIG. 1, and the center beam 12 is provided on the tool bar 3 so as to travel along the center line of the crop P. FIG. 4 is a perspective view of the main part showing details of the first embodiment. Further explanation will be made with reference to FIGS. 3 and 4 as well. A ruler wheel 22 is rotatably provided at the front end portion of the center beam 12 via a yoke 23.

Reference numeral 13 denotes a square steel slide shank, which is horizontally provided outward on the right side of the front portion and the left side of the middle portion of the center beam 12. Reference numeral 14 denotes a slide shank holder, which includes a square tube portion 28 through which the slide shank 13 is slidably inserted. The slide shank 13 is fixed to an appropriate position with a set screw 29. A bolt / nut 30 fixes the slide shank holder 14 to the center beam 12. In FIG. 4, the slide shanks 13 are provided on the front right side and the middle left side of the center beam 12, but may be provided on the front left side and the middle right side.

Reference numeral 15 denotes a rectangular plate fixed vertically to the outer end of the slide shank 13. Bolts and nuts 34 are provided through both ends of the plate 15 in the front and rear directions, and mounting handles 17 and 18 are attached. Further, a fixing block 20 is provided at the rear end of the center beam 12, and an attachment handle 19 is inserted and fixed vertically. Reference numeral 31 denotes a bolt / nut for mounting the fixing block 20, and 32 denotes a set screw for fixing the mounting handle 19. A middle tilling claw 21 is fixed to the lower ends of the attachment handles 17, 18 and 19 with bolts and nuts.

Reference numeral 16 denotes a tine holder, which is fixed to the outer surfaces of the mounting handles 17 and 18 by the bolts and nuts 34 described above. Reference numeral 24 denotes a lower left bent upright tine, and reference numeral 25 denotes a lower right bent upright tine. The lower right bent upright tine is inserted into a tine insertion hole 43 (see FIG. 9) of the tine holder 16 and is fixed by a set screw 33 so as to be adjustable in height. . Reference numerals 35 and 36 respectively denote an upright tine left-curved lower end and an upright tine right-curved lower end, and are respectively disposed on the left and right outer sides of the middle tilling claws 21 as shown in FIG.

Next, FIGS. 8 and 9 are a front view and a plan view of the tine mounting portion 16 made of cast iron. Reference numeral 43 denotes a tine insertion hole having a vertical width of 19 mm and a horizontal width of 33 mm so that two tines having a thickness of 9 mm and a width of 32 mm can be inserted. In the figure, 33 is the set screw described above, 34 is a bolt / nut, 42 is a lock nut, 44 is a rib, and 45 is a protruding seat.

FIG. 10 shows the lower left-handed upright tine 24 of the first embodiment, where (a) is a left side view and (b) is a rear view. In the embodiment, the length from the lower surface of the senter beam 12 to the lower ends of the middle tillers 21 of the attachment handles 17 and 18 is 40 cm. The lower left bent upright tine 24 is a heat-treated spring steel.

In the figure, the total length L is 80 cm, the thickness t is 9 mm, the width w is 32 mm, and the cutting width W at the lower end is prepared in four types from 15 cm to 6 cm in increments of 3 cm. I used it. The length L1 to the lower end bent portion is 76 cm, and the length L2 of the cutting blade 40 to the bent portion is 34 cm. The lower bending angle α of the bending portion 35 is 15 °, and the penetration angle β (forward downward inclination angle) is 7 °.

  FIG. 11 is a cross-sectional view taken along the line AA in FIG. 10. The tine width w is 32 mm, the tine thickness t is 9 mm, the cutting edge angle γ is 25 °, and the cutting edge 40 is formed with a single edge on the right side in the traveling direction F. is doing. The lower right bent upright tine 25 described in FIG. 4 is the same as the lower left bent upright tine 24 except that the cutting edge is formed on the left side in the forward direction F and the lower end is formed in the right turn.

FIG. 5 is a perspective view of the main part of the second embodiment. The lower left turn retracting tine 26 and the lower right turn retracting tine 27 are respectively attached to the left tine holding body 16 and the right tine holding body 16. The upper upright portions 26 a and 27 a are inserted and fixed with setscrews 33. 37 is a lower left corner of the retractable tine, and 38 is a lower right corner of the retractable tine. Reference numeral 39 denotes a retreating portion of the lower left turn retractable tine 26 and the lower right turn retractable tine. Reference numeral 41 denotes a cutting edge, which is formed on the leading edge from the retreating portion 39 to the lower end portions 37 and 38.

FIGS. 12A and 12B show a lower right-turning retractable tine 27 according to the second embodiment, where FIG. 12A is a rear view, and FIG. 12B is a right side view showing a shape before bending at the lower end portion by a one-dot chain line. In the figure, the lower bending angle α is 15 °, the penetration angle β is 7 °, and the backward downward inclination angle δ is 155 °. The cutting edge angle is 25 ° as in Fig. 11.
It is. The total length L3 is 80 cm, the tine thickness t is 9 mm, the width w is 32 mm, and the cutting width W at the lower end is prepared in four types from 15 cm to 6 cm in increments of 3 cm, depending on the hardness of the cultivated soil.

In FIG. 12, the length L4 from the upper end to the lower bent portion is 73 cm, and the length L5 of the upper upright portion 27a is 30 cm. The length L6 of the retracted portion before bending is 63 cm, the length L7 of the cutting edge is 50 cm, and is formed on the right side in the traveling direction F. The lower left bend receding tine 26 shown in FIG. 5 is the same as the lower right bend receding tine 27 except that the cutting edge at the front edge is formed on the left side in the forward direction and the lower end is bent leftward. .

  The lower left bent upright tine 24, the lower right bent upright tine 25, the lower left bent backward tine 26 and the lower right bent backward tine 27 described above are penetrated into the cultivated soil by the set screw 33 of the tine holding body 16. Although the depth is adjusted, it is usually used at 15 cm and a maximum of 25 cm.

FIG. 6 is a perspective view of an essential part of the third embodiment. In this case, the middle tiller 21 is removed together with the attachment handles 17 and 18 in the first embodiment, and the tine holder 16 is attached to the plate 15. Then, the tines insertion holes 43 of the left tine holder 16, the lower left bent upright tines 24 and the lower right bend backward shaped tine 27, superimposed over the half portion on the left and right lower left bent upright tines 24 outwardly Insert it up and down and fix it with set screw 33. Similarly , the lower right bent upright tine 25 and the lower left bent backward tine 26 are stacked in the tine insertion hole 43 of the right tine holding body 16, and the lower right bent upright tine 25 is overlapped on the outside and the upper half portion is overlapped on the left and right. Align the top and bottom, and fix with set screw 33.







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  In the third embodiment, as shown in FIG. 7, the lower end 36 of the lower right bent upright tine 25, the lower end 37 of the lower left bent backward tine 26, and the left bent of the lower left bent upright tine 24. The lower right end 35 and the lower right bent lower end 38 of the lower right turn receding tine 27 are provided on the front right side and the middle left side of the center beam 12 to provide a wide tillage width and weeding width. Further, by changing the depths of the upright tines 24 and 25 and the receding tines 25 and 27, the medium tillage depth and the weeding depth are formed three-dimensionally.

  Although not shown in FIG. 7, the lower right bent upright tine 25 and the lower left bent backward tine 26 disposed on the front right side of the center beam 12 in FIG. It may be replaced with a right turn retracting tine 27. In the third embodiment, the attachment handles 17 and 18 and the middle tilling claw 21 are not provided on the front right side and the middle left side in order to prevent clogging of the soil between the middle tilling nail during the mixing.

It is a back perspective view of a cultivator provided with the 1st example of the present invention. It is a principal part left view of FIG. FIG. 2 is a schematic plan view of FIG. 1. It is a principal part perspective view of FIG. It is a principal part perspective view of 2nd Example. It is a principal part perspective view of 3rd Example. It is a schematic plan view of the cultivator provided with 3rd Example. It is a front view of a tine attachment body. It is also a plan view. The left lower left standing upright tine in a 1st Example is shown, (a) is a left view, (b) is a rear view. It is an expanded sectional view of an AA line. The lower right bend retreat type tine in 2nd Example is shown, (a) is a rear view, (b) is a right view which shows before bending of a lower end part with a dashed-dotted line.

Explanation of symbols

1 Cultivator
12 Center beam
13 Slide shank
14 Slide shank holder
16 Tine holder 17 Mounting pattern
18 Mounting pattern
19 Mounting pattern
21 middle plow
24 Lower left turn upright tine 25 Lower right turn upright tine 26 Lower left turn backward tine 27 Lower right turn backward tine 28 Square tube
29 Set screw 30 Bolt / Nut
31 Bolt / Nut 32 Set Screw 33 Set Screw 34 Bolt / Nut
39 Retreating part
40 cutting blade 41 cutting blade 43 tine insertion hole

Claims (1)

The front right and the intermediate portion left of the center beam to travel along the Azekan centerline, the center beam and orthogonal and telescopic fixed freely set only horizontally sliding shank outward, the rear end portion of the front Symbol center beam In the cultivator provided with the middle tiller in the forward direction at the lower end portion of the mounting handle protruding downward from the lower end of the mounting handle, the outer end portions of the slide shank on the front right side and the left side of the intermediate portion are provided with tine insertion holes in the vertical direction respectively. A tine holding body is detachably attached, a cutting edge is formed on the front edge of the rectangular steel plate, a lower end is formed in a diagonally downward right bend , and a lower right bent upright tine with a penetration angle in the forward downward direction and bending a rectangular steel plate from the intermediate portion downward obliquely rearward, so as to form obliquely downward left bend the lower end to form a cutting edge on the front edge of the bent portion, it gave penetration angle forward downward below A left bend backward shaped tines, the lower right bend upright tines on the outside, superimposed upper half portion on the left and right inserted vertically into tine insertion hole of the right side of the tine carrier and height adjustably fixed, rectangular A cutting edge is formed at the front edge of the steel plate, the lower end is formed in a diagonally downward left turn , and a lower left turn upright tine with a penetration angle in the front downward direction, and a rectangular steel plate is obliquely rearward downward from the middle. the folding, and forming the obliquely downward right bend the lower end to form a cutting edge on the front edge of the bent portion, and a lower right bend backward shaped tines gave penetration angle forwardly downwardly, the lower left bend An intermediate plowing weeding device in a cultivator with an upright tine on the outside, with the upper half overlapped on the left and right, and inserted vertically into the tine insertion hole of the left tine holder so as to be adjustable in height .

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