JPH10313604A - Harrowing and weeding device for cultivator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for performing weeding between ridges and between plants while harrowing both sides of crops. SOLUTION: In the lower part of an elastically and vertically moved parallelogram link provided on both left and right sides of an inverse U-shaped machine frame 1 to be attached to a cultivator over a crop ridge, a left side sled 11 and a right side sled 12 are horizontally made to face each other and provided together. At the sleds 11 and 12 on the left and right sides, successively backwards from a front end part, first and second harrowing tines 37 and 38 on the left side, the first and second harrowing tines 39 and 40 on the right side, then left and right side first weeding tines 46 and 47, second weeding tines 59 and 61 on the left and right sides whose end parts are turned to sickle sharpen blades 60 and 62 turned to an oblique rear outer side after that and third weeding tines 63 and 65 on the left and right sides whose end parts are turned to bend parts 64 and 66 turned to the oblique rear outer side are respectively made to face each other in a truncated chevron shape in a plane view in an advancing direction and projectingly provided toward a rear oblique lower side and rakes 67 and 68 on the left and right sides are freely direction-changeably and projectingly provided from the rear upper part of the left and right side sleds to the rear part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crushed soil weeding apparatus used for a cultivator, and more particularly to an apparatus that adapts to unevenness of the ground surface and enables crushed soil on both sides of a crop, and weeding between furrows and plants.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 8-214608 discloses a weeding blade for a cultivator which adapts to unevenness of the ground surface and enables weeding between furrows and between plants.

That is, in the above-mentioned invention, the lower link is a sled, and a parallelogram link mechanism which stands up elastically so as to be able to swing back and forth is provided side by side with the crop row therebetween, and the left and right upper links are framed. Attach to the cultivator body and attach the left and right long sickle blades with spring tine and the right and left short sickle blades with short springs. The sickle blades at the rear end of the sickle blade with left and right short springs are opposed to each other via a small gap, and The gist of the invention is that the blades are disposed outwardly in front of the sickle blades at the rear end of the attached sickle blades, and the blades are arranged obliquely downward and forward in the lower rear of the left and right sleds, respectively, in a C-shape with respect to the forward direction.

The cultivator weeding blade described above has a sickle blade of a sickle blade with a long spring tine and a sickle blade of a sickle blade with a short spring tine that are obliquely downwardly facing the soil as the cultivator advances. And cut the weeds around the crop to remove weeds. In particular, in the sickle blade with long spring tine on the left and right, the long spring tine is displaced inward due to the resistance of the sickle blade to advance in the soil, and the base of the sickle blade approaches the crop plant and weeds between the plants.

[0005]

Most of the sowing machines are equipped with a ruler wheel that runs on both sides of the seeding position in order to maintain the seeding depth. To form a cured surface layer. This hardened surface layer impedes the flow of air and moisture into the soil and is not preferable for growing crops.
The conventional cultivator weeding blade has almost no soil breaking effect and could not meet the above demand.

[0006] The above-mentioned cultivator weeding blade is
The left and right long pulling tine blades and short spring tine blades cut the roots of weeds that have grown to some extent, but are unable to cut very small weeds before crop germination. When the weed is small, it is effective to pull it out from the soil, but the long spring tine sickle blade and the short spring tine sickle blade did not have sufficient effect.

The present invention can crush hardened surface layers on both sides of a crop, and when the weeds are small and have grown to some extent, adapt well to the unevenness of the ground surface along the row of crops, without damaging the crops. It is an object of the present invention to provide a crushed soil weeding device for a cultivator capable of weeding.

[0008]

In order to achieve the above object, a crusher for cultivator according to the present invention comprises a left vertical girder and a right vertical girder of an inverted U-shaped machine frame attached to a cultivator across a crop ridge. A parallelogram link that elastically moves up and down is provided, and a left sled and a right sled are provided horizontally below and below the parallelogram link along the forward direction.

[0009] Then, the left side of the left sled is sequentially rearward from the front end to the right side, the first left side crushed tine inside, the left side second crushed tine outside, and then the left side first bent side inwardly bent.
Weeding tine, then the left second weeding tine with the terminal part diagonally rearwardly facing out with a sickle blade on the inside, and the left third weeding tine with the terminal part diagonally rearwardly outwardly tangled on the outside I do.

[0010] Also, the right side of the right sled is successively rearwardly from the front end to the left side, the first right side crushing tine inside, the right side second crushing tine outside, and then the right side first side with the terminal portion bent inward. Weeding tine, then the right second weeding tine with the terminal part diagonally backward and outward facing the sickle blade on the inside, and the right third weeding tine with the terminal part diagonally rearwardly outwardly bent on the outside I do. The first and second crushed tines on the left and right sides, the first weeding tine on the left and right sides, and the second and third weeding tines on the left and right sides are respectively viewed between the left and right sleds in the forward direction and viewed in plan. It is made to face up in a reverse C-shape and project obliquely downward and backward. Further, the left and right hands are projected rearward from above the rear ends of the left and right sleds so as to be pivotable left and right and tiltable vertically and horizontally.

In addition, a tine mounting plate is provided for each of the left and right sides of the sled, one end of which is fixed to the front end of the sled, and the center line of which is horizontally extended to the middle of the sled front half along the sled center line. An L-shaped bracket is provided in which screw rods are vertically provided at the front end and the rear end of the tine mounting plate, respectively, and the left and right first crushed tine and the left and right second crushed tine are mounted on the screw rod at the front end. Each of the L-shaped brackets is attached to the screw bar at the rear end thereof so that the first weeding tine on the left and right sides can be attached to the screw bar at the rear end so as to be able to swing horizontally. Then, the first weeding tine on the left and right sides is disposed with the terminal portions crossing each other, and the second weeding tine on the left and right sides is disposed.
It is preferable that the weeding tine is one in which the sickle blade of the terminal is disposed with its position shifted back and forth.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An inverted U-shaped machine frame according to the present invention has left and right vertical girder members of equal length hanging vertically on both sides of an upper side. The upper side is vertically held by a split fastener, and a vertical girder is vertically erected on the upper surface of the split fastener, and a vertical rod holder whose position is adjustable up and down is attached to the vertical girder. Attach the split fastener that fixes the cultivator toolbar across the back of the rod holder. That is, by attaching and detaching the split fastener to and from the toolbar, the inverted U-shaped machine frame can be attached to and detached from the cultivator.

[0013] The left sled and the right sled are formed to have the same length in which a rectangular portion is connected to the rear of the upwardly curved triangle at the front, and a left sled vertical girder and a right sled vertical girder are erected at their respective intermediate portions. . The left sled column and the right sled column are connected to each other behind the left column and the right column of the inverted U-shaped machine frame by an upper link and a lower link to form a parallelogram link. A right-side sled is provided horizontally below the parallelogram link so as to face left and right along the forward direction. Then, a tension coil spring is stretched between the front part of the lower link at the lower end of the left and right stringers and the upper part of the left and right sled stringers, so that the parallelogram link can be elastically moved up and down. . The resilient up and down movement of the parallelogram allows the left and right sleds to move forward in conformity with the unevenness of the ground surface.

Between the left and right sleds, the first left and right crushed tines are disposed inside and the left and right second crushed tines are sequentially disposed rearward from the front end of the left and right sleds, and then to the rear end. A first weeding tine on the left and right sides with the part bent inward is provided, and then a second weeding tine on the left and right sides is provided inside and a third weeding tine on the left and right sides is provided side by side. The left and right second weeding tines each have a rear part formed as a sickle blade projecting diagonally outward rearward, and the left and right third weeding tines each have a rear part formed as a bent part projecting diagonally outward rearward. Further, from the upper rear end of the left and right sides of the sled, the left and right hands are projected rearward so as to be pivotable left and right and tiltable up and down and right and left.

The first and second crushed soil tines on the left and right sides and the first weeding tine on the left and right sides project obliquely downward and rearward between the insides of the sleds on the left and right sides. A tine mounting plate is provided, one end of which is fixed to the front end and whose center line extends horizontally along the sled center line to the rear and the middle part of the sled front half. Then, screw rods are erected vertically at the front end and the rear end of the tine mounting plate, and the left and right first ground tine and the left and right second ground tine are attached to the screw rod at the front end. Attach each bracket so that it can be turned horizontally. L-shaped brackets to which the first weeding tines on the left and right sides are respectively attached are attached to the threaded rod at the rear end so as to be horizontally turnable.

Further, the first weeding tine on the left and right sides is disposed with the terminal portions crossing each other for weeding between the plants, and the left second weeding tine and the right second weeding tine have smooth soil between them. It is advisable to dispose the sickle blade of the terminal so that the position is shifted back and forth so that it passes through the terminal.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In the figure, the arrow F is a display in the forward direction, and the left, right, inside and outside are viewed in the F direction.

In FIG. 1 to FIG. 3, reference numeral 1 denotes an inverted U-shaped machine frame. In order to straddle a crop ridge, an interval between a left vertical girder 1a and a right vertical girder 1b is about 37 cm and a height is about 21 cm. Formed of steel. Numeral 3 is a split fastener, in which a vertical rod 2 is suspended from the upper surface of the central portion, the upper side girder 1c of the inverted U-shaped machine frame 1 is vertically held, and both front and rear ends are fixed with bolts and nuts 4. It has become. Reference numeral 5 denotes a vertical rod holder, which is formed of pipe steel so as to be fitted to the vertical rod 2 and fixed with set screws 6 from the outside so that the vertical position can be adjusted.

Reference numeral 7 denotes a split fastener, which sandwiches the toolbar 10 of the cultivator 90 shown in FIG. 11 back and forth, and is fixed to the toolbar 10 with bolts and nuts 9 penetrating the upper and lower parts. Reference numeral 8 denotes a connecting piece, to which the split fastener 7 is fixed behind the vertical rod holder 5, and when the split fastener 7 is attached to the horizontal toolbar 10, the inverted U-shaped machine frame 1 is provided.
Are provided to be slightly inclined forward (see FIG. 3).

11 is a left sled, 12 is a right sled,
It has a length of about 29 cm and a width of about 6.5 cm, and has a front end in the shape of an upwardly curved triangle. Reference numeral 13 denotes a left-hand warp stringer, and 14 denotes a right-hand warp stringer. The base end is fixed near the outer edge of the rear upper surface of the left and right sleds 11 and 12 by slightly tilting forward in the forward direction F. At the same time, it rises obliquely outward and stands upright from the middle part. The left sled vertical beam 13 and the right sled vertical beam 14 have the same base end rearward from the front ends of the left sled 11 and the right sled 12, respectively.

Behind the left vertical girder 1a and the right vertical girder 1b of the inverted U-shaped machine frame 1, vertical portions of a left sled vertical girder 13 and a right sled vertical girder 14 are respectively provided, and upper links 16 and 16 are provided.
And the lower links 17, 17 with the front end along the left vertical girder 1a and the right vertical girder 1b, and the rear end along the vertical part of the left sled vertical girder 13 and the right sled vertical girder 14, respectively. It is arranged outside and bolts and nuts 18 and 19
To form a parallelogram link.

Referring also to FIGS. 5 and 6, reference numeral 20 denotes a synthetic resin washer, which is inside and outside of vertical portions of a left vertical beam 1a, a right vertical beam 1b, and left and right sled vertical beams 13 and 14. The bolts and nuts 18 and 19 are abutted on the side surfaces and
Is penetrating. The synthetic resin washer 20 has an anti-friction effect, and even when the bolts and nuts 18 and 19 are tightened, the upper link links 16 and 16 and the lower links 17 and 17 are smoothly swung around the bolts and nuts 18 and 19. 2
1 is a round washer.

Numeral 15 denotes a spring hook, which is erected at the upper end of each of the left and right sled vertical beams 13 and 14 and has a small hole at the upper end bent outward. Extension coil spring 22
The upper and lower ends are formed as hooks, the upper end hook is hooked on the small hole of the spring hook 15, the lower end hook is hooked on the bolt of the bolt / nut 19, and is fixed between the double nuts. The left and right vertical beams 1a and 1b of the machine casing 1 are stretched between lower end portions of the left and right spring hooks 15 and 15, respectively. The left and right sleds 11 and 12 at the time of work are configured such that the parallelogram link is resiliently moved up and down by a tension coil spring 22 to elastically contact the ground surface.

Referring also to FIG. 7, the right sled 12
The lower end plate 25 made of synthetic resin, which cuts the front end of the rectangular steel plate into a triangle and cuts along the lower surface of the front end of the upper plate 23 curved upward, penetrates the countersunk screw nut 27 from below to the terminal. It is fixed to the front half of the sled upper surface plate 23. The tip lower surface plate 25 reduces the running resistance of the right sled 12 due to the property of the synthetic resin plate preventing soil adhesion. The head of the countersunk screw nut 27 is fitted on a counterseat (not shown) on the lower surface of the lower end plate 25 so as not to protrude from the lower surface of the lower plate 25.

Numeral 24 designates a tine mounting plate, which bends the front end of the rectangular plate downward to come into contact with the outer surface of the upper end of the front end lower plate 25, and the front end is fixed to the front end of the sled upper plate 23. Along the center line on the right
From the front end to the middle part of the front half of the sled. Reference numeral 26 denotes a steel lower plate whose front end surface is in contact with the rear end surface of the front end lower plate 25, extends along the lower surface of the sled upper plate 23 to the rear end of the upper plate 23, and has an appropriate number from below to above. It penetrates the countersunk screw nut 27 and is fixed to the lower surface of the sled upper surface plate 23. Countersunk screw nut 27 is a steel bottom plate 2
6 does not protrude from the lower surface. Screw rods 28 are provided at the front end and the rear end of the tine mounting plate 24, respectively.
And 29 are standing upright.

The right sled 12 has a screw bar 31 fixedly mounted inside the front edge of the right sled vertical beam 14 on the upper surface of the sled upper plate 23 and a screw bar 72 fixed at the center of the rear end. Is cut off diagonally. The left sled 11 cuts off the right side of the rear end diagonally, and replaces the screw rod 30 with the screw rod 3 of the right sled 12.
The configuration is the same as that of the right-side sled 12 except that the right-side sled 12 is provided upright at a position slightly rearward from the position 1 (see FIG. 4).

FIG. 8 is a right side view, partly omitted, showing an aspect of the above-described parallelogram link operation. The line AA shows when the left sled 11 is at the lowest position, and the line BB shows
This shows a case where the left sled 11 has reached the middle ascent position. The right sled 12 moves up and down by the right parallelogram link similarly to the left sled 11. Left and right sled 1
Nos. 1 and 12 are designed to rise up to 10 cm from the line AA by a parallelogram link. That is, when the work of the present invention is mounted on a cultivator, when the cultivator is mounted on the tractor such that the left and right sleds 11 and 12 are in contact with the ground surface substantially at the position of the line BB, the left and right sleds 11 and 12 are attached. Will move forward in conformity with the surface irregularities.

Referring also to FIG. 4 and FIG.
Screw rods 28 erected at the front ends of the left and right sleds 11, 12
Then, one piece of the L-shaped bracket 32 is raised to face each other in a C shape when viewed in the forward direction F, and the other piece is
It is fixed to the tine mounting plate 24 by a spring washer 34. A threaded bar 35 is screwed through the raised piece of the L-shaped bracket 32 so as to penetrate, and a nut 36 screwed to the threaded rod 35 is used as a spacer to contact the inner surface of the raised piece.

Numeral 37 denotes a left-side first crushing tine, numeral 38 denotes a left-side crushing tine, numeral 39 denotes a right-side first crushing tine, and numeral 40 denotes a right-side second crushing tine. As shown in FIG. A ring-shaped mounting portion (hereinafter, abbreviated as a mounting portion) 41 through which 35 is inserted, an extension portion is formed from a coil obtained by extending one piece of the portion and twisting once, and the terminal portions are appropriately placed inside and outside, respectively.
It is bent outward. These crushed tines have a wire diameter of 4.
5mm spring steel, left and right first crushed tine 3
Reference numerals 7 and 39 indicate that the length from the center of the mounting portion 41 to the tine terminal is approximately 190 mm, and the coil center diameter is 60 mm. The left and right second crushed soil tines 38 and 40 are attached to the mounting portion 41.
The length from the center to the tine terminal is about 220 mm, and the coil center diameter is 52 mm.

Then, the outer surface of the mounting portion 41 is brought into contact with a nut 36 having the left first crushed tine 37 as the spacer, and the nut is externally fitted to the screw rod 35, and is screwed separately to the screw rod 35. L-shaped bracket 32 at the front end of left sled 11
Fixed to Similarly, the first right crushed tine 39 is attached to the L-shaped bracket 32 at the front end of the right sled 12. Also,
Left second crushed tine 38 and right second crushed tine 40
Are attached to the outer surfaces of the upright pieces of the L-shaped brackets 32 at the front ends of the left sled 11 and the right sled 12, respectively.
The screw bar 35 is inserted through the screw bar 35 (see FIG. 9), and a nut 36 is screwed onto the screw bar 35 and fixed. The first and second crushed soil tines 37 and 39 on the left and right sides fixed in this manner,
Numeral 40 indicates that the terminal projects 3 cm to 5 cm below the lower surfaces of the left and right sleds 11 and 12 so that the terminal penetrates below the surface of the ground.

The L-shaped brackets 42, 42 are fixed to the screw rods 29 erected at the rear ends of the tine mounting plates 24 on the left and right sides through a nut 43 and a spring washer 44 in a C-shape when viewed in the forward direction F. (See FIG. 7). The upright piece of the L-shaped bracket 42 is provided with a screw hole into which a bolt 45 is screwed. Then, the left first weeding tine 46 is provided on each of the left and right standing pieces.
And the first weeding tine 47 on the right side is attached to the ring-shaped mounting portion 4 at the front end so that the rear end thereof shallowly penetrates into the ground surface of the crop plant.
8 (see FIG. 9) and spring washer 44 (see FIG. 7).
5 and fix it diagonally downward. The first weeding tines 46 and 47 on the left and right sides are symmetrical in plan view and have a wire diameter of 2.
Approximately 20c from the center of the ring-shaped mounting part 48 with 6mm spring steel
A bent portion of about 5 cm is connected to the straight portion of m at an included angle of 130 °, and a bent portion having a length of about 1 cm parallel to the straight portion is formed. In the embodiment, the first weeding tine 4 on the left and right sides is used.
Terminals 6 and 47 are crossed by about 1 cm.

In operation, the sleds 11 and 12 on the left and right sides run with the crop positioned near the center of the intersection, and the intersection enters between the plants to perform weeding. And
The first weeding tines 46 and 47 on the left and right sides have an elasticity (spring constant about 22 g / mm) so that the crossing part opens right and left when the intersection comes into contact with the base of the crop so as not to damage the crop. During operation, the first weeding tines 46, 4 on the left and right sides are used.
In No. 7, the terminal part which moves forward in the soil freely flicks and floats, pulls out the young weeds of the crop stocks, and weeds can be removed between the stocks without damaging the crops.

Reference numeral 49 denotes a left tine bracket, and 50 denotes a right tine bracket. A left vertical plate 52 and a right vertical plate 53 are erected obliquely outward at the front end of the substrate 51, respectively. Through the screw rod 30 of the left sled 11 and the screw rod 31 of the right sled 12, respectively.
The left vertical plate 52 and the right vertical plate 53 are opposed to each other in an inverted C-shape when viewed in the forward direction F (see FIG. 4), and a nut 54 and a spring washer 55 are provided.
And is fixed to the sled upper surface plate 23 (see FIG. 7). The left and right vertical plates 52 and 53 have a threaded rod 56 threaded through a threaded hole 57 provided at an intermediate portion, and are threaded onto the threaded rod 56 with a nut 58 abutting on the inner and outer surfaces as a spacer. 4, see FIG. 7).

Numeral 59 denotes a second weeding tine on the left side, which is made of spring steel having a wire diameter of 4.5 mm, and whose front end is a mounting portion 41 through which the screw rod 56 is inserted, and one piece of the mounting portion 41 is extended and twisted one turn. The base end of the sickle blade 60 is welded obliquely outward to the end of a linear portion having a length of about 280 mm connected to the coil (center diameter 53 mm). Reference numeral 61 denotes a right second weeding tine. The front end and the straight portion are formed in the same manner as the left second weeding tine 59, and the end of the straight portion has the sickle blade 62 obliquely outwardly opposed to the sickle blade 60, The base end is welded. Sickle blades 60 and 62 have a blade length of 12 cm and a width of 8 mm,
The thickness is 2.5 mm and the penetration angle is 12 °.

Referring to FIG. 4, the left second
The weeding tine 59 abuts the mounting part 41 on the nut 58 abutting on the inner surface of the left vertical plate 52, and inserts the screw rod 56,
Another nut 58 is screwed and fixed to the screw rod 56.
The right second weeding tine 61 is fixed to the right vertical plate 53 in the same manner as the left second weeding tine 59. During operation, the crop is located in the center between the left and right second weeding tines 59, 61, and the sickle blades 60, 62 are about 1 cm deep from the ground surface.
The left and right second weeding tines 59, 6
1 are attached diagonally downward to the left and right vertical plates 52, 53, respectively. At this time, the left and right second weeding tines 61 and 61 attached to the left and right sleds 11 and 12 are arranged such that the ends of the straight portions of both sides face each other at an interval of about 5 cm and the right second weeding tines 61. Is located about 3 cm ahead of the straight-line terminal of the left second weeding tine 59.

As described above, in order to shift the position of the straight portion terminal, the screw bar 30 of the left sled 11 for mounting the left tine bracket 49 is different from the screw bar 31 of the right sled 12 for mounting the right tine bracket 50 as described above. Is also provided at the front position. Thus, the right second weeding tine 6
When the first straight section terminal is located forward of the straight section terminal of the second weeding tine 59 on the left side, the soil smoothly passes between the straight section terminals facing the left and right during work.

Reference numeral 63 denotes a left-hand third weeding tine made of spring steel having a wire diameter of 4.5 mm, the front end of which is formed in the same coil as that of the left-hand second weeding tine 59. A bent portion having a length of about 190 mm, which is obtained by bending the rear portion obliquely outward in a plan view, is connected, and a left-side bent portion 64 having a length of 120 mm is further obliquely outwardly directed to a terminal of the bent portion. It is articulated. And the third weeding tine 6 on the left
3, the mounting portion 41 is in contact with the outer surface of the nut 58 that is in contact with the outer surface of the left vertical plate 52, the screw bar 56 is inserted through the nut 58 and the mounting portion 41, and another nut 58 is inserted into the screw bar 56. It is screwed and fixed to the left vertical plate 52, and is fixed obliquely downward so that the left bent portion 64 is approximately horizontal below the lower bottom surface of the left sled 11 by about 1 cm.

Reference numeral 65 denotes a right third weeding tine, which is formed in the same manner as the third weeding tine 63 except that the rear end is formed in a right bent portion 66 having a length of about 120 mm. Is fixed to the right vertical plate 53 obliquely downward so that the right side of the sled 12 is substantially horizontal about 1 cm below the lower bottom surface.

Reference numeral 67 denotes a left-handed hand, and 68 denotes a right-handed hand, which are disposed obliquely downward from above the rear ends of the left sled 11 and the right sled 12, respectively, and left and right by an L-shaped bracket 71 described later. It is provided so as to be able to change its direction and to be tiltable up, down, left and right by an upright bracket 76. 69 and 70 each have a wire diameter of 3.2 mm
The left and right black bear lines of the spring steel of which the rear end connected to the loose concave curved portion having a length of about 250 mm is bent outward by about 25 degrees upward by about 15 degrees, and has a length of about 45 mm. Formed at the bent portion of. In the illustrated example, the left hand 67 and the right hand 68 are attached in a concavely curved shape, but may be attached in a convexly curved shape.

Further description will be made with reference to FIGS.
Reference numeral 1 denotes an L-shaped bracket. One of the brackets has a rearward and upright shape, and the other has a threaded rod 72 fixedly mounted on the rear ends of the left and right sleds 11 and 12, and a nut 73 and a spring washer. 74
It is fixed with. The upright piece of the L-shaped bracket 71 is provided with a screw hole 75.

Reference numeral 76 denotes an upright bracket, in which a cylindrical portion 77 is horizontally fixed to the lower end of the vertical plate 78, and a screw hole 82 is provided in the upper end of the vertical plate 78. The bolt 79 inserted into the spring washer 80 is screwed into the screw hole 75 of the upright piece of the L-shaped bracket 71 by inserting the cylindrical portion 77 into the screw hole 75.
6 is attached to the rear of the L-shaped bracket 71. When the bolt 79 is loosened, the standing bracket 76 releases the bolt 7.
By turning around 9, the girder 78 can be inclined left and right.

Reference numeral 81 denotes a bolt screwed into the screw hole 82, and reference numerals 83 and 84 denote a round washer and a spring washer through which the bolt 81 is inserted. Referring to FIG. 10 also, reference numeral 85 denotes a spring bracket, which has a ring-shaped mounting portion through which the bolt 81 is inserted at the center of the front end, and one side of the mounting portion extends outward and is twisted by one. It becomes a coil, and bolts 8
A ring-shaped mounting portion through which the reference numeral 6 is inserted is formed. Reference numeral 87 designates a bear-man wire fixing piece, and a suitable number (five in this embodiment) of bear-man wires 69 or 70 are sandwiched at equal intervals between the upper and lower plates in a trapezoidal shape and pressed. The upper plate and the lower plate are welded at appropriate places. Reference numeral 88 denotes a mounting piece protruding from the center of the front end of the bear hand line fixing piece 87.

In the spring bracket 85, a bolt 81 is inserted through a ring-shaped mounting portion at the front end, a round washer 83 and a spring washer 84 are fitted over the bolt 81, and the bolt 81 is screwed into the screw hole 82. Are fixed rearward to the upper end of the vertical plate 78 of the vertical bracket 76. Then, the mounting piece 88 is fixed to the ring-shaped mounting portion at the rear end of the spring bracket 85 via a bolt 86, and the left hand 67 and the right hand 6
8 is disposed behind the left sled 11 and the right sled 12, respectively, such that the terminal portion is shallow and penetrates the ground surface.

The first crushed soil tine 37 on the left side described above,
Left-hand second crushed tine 38 and right-hand first crushed tine 3
9. The second right clay tine 40 turns the L-shaped bracket 32 around the threaded rod 28 by loosening the nut 33 shown in FIG. The crushing depth is adjusted by loosening the nut 36 of the bolt 35. 1st weeding tine 4 on left and right
6 and 47 adjust the forward angle of the inverted C-shape arrangement with respect to the forward direction F by loosening the nut 43 and turning the L-shaped bracket 42 around the screw rod 29 (arrow b in FIG. 7). The depth below the ground surface is adjusted by loosening the bolt 45. The left and right second weeding tines 59 and 61 and the third weeding tines 63 and 65 loosen the nut 54 and turn the left and right tine brackets 49 and 50 around the threaded rods 30 and 31, respectively (arrow c in FIG. 7). To adjust the direction, and adjust the depth below the ground surface by loosening the nut 58.

The right and left bear hands 67 and 68 are nuts 73
By loosening the L-shaped bracket 71 left and right (arrow d in FIG. 7) around a screw rod 72 erected on the rear end surfaces of the left and right sleds 11 and 12, so that the left and right sides can be moved in the forward direction F. The inclination to the left and right can be adjusted by turning and turning the standing bracket 76 left and right (arrow e in FIG. 7) by loosening the bolt 79. Further, the bolts 81 and 86 are loosened, and the spring
The vertical penetration of the terminal portion into the ground surface can be adjusted by vertically moving the 5 and the bear hand line fixing piece 87.

FIG. 11 is a partially omitted plan view of the cultivator 90 mounted on the tractor 89, in which the apparatus of the present invention is mounted. Reference numeral 91 denotes a mast section of a cultivator 90 connected to the hydraulic three-point support device of the tractor; 92, a ruler wheel;
3 is a beam, 94 is a middle plow. In the apparatus of the present invention, the split fastener 7 is attached to the cultivator toolbar 10 so that the crop N is located at the center between the sleds 11 and 12 on the left and right sides when used.

[0047]

Since the present invention is configured as described above, it has the following effects.

A parallelogram link that elastically moves up and down is provided on the left and right vertical girders of the inverted U-shaped machine frame straddling the crop ridge, and a left sled and a right sled are respectively provided below the parallelogram link in the forward direction. Since the left and right sleds can be freely moved up and down according to the unevenness of the ground surface by running horizontally facing each other, it is possible to accurately perform soil removal and weeding on both sides of the crop it can.

At the front ends of the sleds on the left and right sides, the left first crushed tine is disposed inside, the left second crushed tine is disposed outside, the right first crushed tine is disposed inside, and the right second crushed tine is disposed outside. The left and right crushed tines project in the forward direction in an inverted C-shape in plan view and diagonally downward to the rear, so that these crushed tines penetrate the hardened surface layer that is formed on both sides of the crop with the advancement. And can be crushed. Moreover, since the crushed tine is disposed inside and outside, a wide crushed width can be obtained.

A left first weeding tine and a right first weeding tine project from the left and right sides of the sled tine respectively in the forward direction in an inverted C-shape in plan view and obliquely downward and rearward. The terminal part bent inward of these weeding tines can pull out small weeds and weed out while floating shallowly in the ground near the base of the crop. In addition, when the left and right terminals cross each other, the terminals can penetrate between the plants and can be weeded.

Since the left and right sides of the sled are provided with tine mounting plates horizontally along the sled center line from the front end to the middle part of the front half of the sled, the left and right sides are provided via the tine mounting plates. First and second crushed soil tines and left and right first
Since the weeding tines can be projected obliquely downward and rearward from a sufficient height, the adjustable range of the rear inclination of these tines can be widened.

Since the left and right second weeding tines and the third weeding tine were disposed on the left and right sleds behind the left and right first weeding tines, the first weeding tine was not weeded. Weeds can be reliably eliminated. In particular, by making the rear end of the second weeding tine on the left and right sides a sickle blade projecting obliquely outward and rearward, the root of the enlarged weed can be cut with the sickle blade, and the regeneration of weeds can be prevented. . Further, the left and right second weeding tines are displaced inward each other due to the underground advancing resistance of the sickle blade, and the sickle blade base enters near the base of the crop and can weed between the stakes.

When the second weeding tine on the left and right sides is such that the sickle blades of the terminal are disposed so as to be shifted in front and rear,
The soil can pass smoothly between the bases of the left and right scythe blades. Further, the rear end of the third weeding tine on the left and right sides is formed as a bent portion projecting obliquely outward and rearward, so that the bent portion moves forward while floating shallowly on the ground surface, pulls out the weeds, and weeds the furrow. I can do this.

Also, the left and right hands are projected rearward from above the rear ends of the sleds on the left and right sides so as to be capable of turning left and right and tilting up and down and left and right, respectively. At the same time, the ground surface can be finely crushed and leveled.

[Brief description of the drawings]

FIG. 1 is a plan view of the device of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a right side view partially omitted.

FIG. 4 is a cross-sectional view in which a part of the view taken along line II of FIG. 3 is omitted.

FIG. 5 is an exploded perspective view of a part of an inverted U-shaped machine casing and a parallelogram link.

FIG. 6 is an exploded perspective view of the right side sled and the parallelogram link.

FIG. 7 is an exploded perspective view of a main part of a right-side sled portion.

FIG. 8 is a right side view, partially omitted, showing a state when a parallelogram link is operated.

FIG. 9 is a front upper perspective view of each tine.

FIG. 10 is a side perspective view of a bear hand part.

FIG. 11 is a partially omitted plan view in which the device of the present invention is mounted on a cultivator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reverse U-shaped machine frame 1a Left vertical girder 1b Right vertical girder 2 Vertical rod 3,7 Split fastening tool 5 Vertical rod holder 10 Tool bar 11 Left sled 12 Right sled 13 Left sled vertical string 14 Right sled vertical string 15 Spring hook Reference Signs List 16 upper link 17 lower link 22 tension coil spring 24 tine mounting plate 28, 29 screw rod 32, 42, 71 L-shaped bracket 37 left first crushed tine 38 left second crushed tine 39 right first crushed tine 40 right second crushed soil Tine 46 Left first weeding tine 47 Right first weeding tine 49 Left tine bracket 50 Right tine bracket 59 Left second weeding tine 60,62 Sickle blade 61 Right second weeding tine 63 Left third weeding tine 64,66 Folding part 65 Right third weeding tine 67 Left bear hand 68 Right bear hand 76 Standing bracket 85 Spring bracket 90 Cultivators beta N crops

Claims (4)

[Claims] An inverted U which is attached to a cultivator across a crop ridge.
The left vertical girder (1a) and the right vertical girder (1b) of the machine frame (1) are provided with parallelogram links that move up and down elastically, and the left sled (11) and the right sled (12) are moved in the forward direction. Along the lower side of the parallelogram link, the horizontal sled is provided horizontally opposite to the left and right sides of the left sled. Crushed tine (38), then the first left side with the end bent inward
Weeding tine (46), followed by a left-hand second weeding tine (59) with a sickle blade (60) at the end, and a sloping part (64) with the terminal at an angle. The left third weeding tine (63) is disposed on the outside, and the right side of the right sled is sequentially rearwardly rearward from the front end to the left side, and the right side is inside the first right side.
Crushed tine (39), right outside second crushed tine (4
0), then the right first weeding tine (47) with the terminal bent inward, and then the sickle blade (6)
2) The right second weeding tine (65) having the terminal portion formed as a diagonally rearward outwardly bent portion (66) is disposed outside, and the right second weeding tine (61) is disposed outside. First and second crushed tine on the side, first weeding tine on the left and right sides,
The right and left second and third weeding tines are opposed to each other in a reverse C-shape in plan view between the left and right sleds when viewed in the forward direction, and project rearward and obliquely downward. A cultivator crushed soil weeding device in which a left bear hand (67) and a right bear hand (68) project rearward from the upper side so as to be able to turn left and right and tilt up and down and left and right, respectively. 2. The sleds (11) and (12) on the left and right sides are
A tine mounting plate (24) is provided, one end of which is fixed to the front end of the sled and the center line of which is horizontally extended rearward along the sled center line to an intermediate portion of the front half of the sled, and a front end of the tine mounting plate (24). Screw rods (2
8) and the screw rod (29) are erected vertically, and the left side first soil tine (37) is attached to the left and right screw rods (28).
An L-shaped bracket (32), to which the left second crushed tine (38), the right first crushed tine (39), and the right second crushed tine (40) are mounted, is mounted so as to be able to turn horizontally. The crushed soil weeding device for a cultivator according to claim 1, wherein an L-shaped bracket (42) to which the left first weeding tine (46) and the right first weeding tine (47) are attached is mounted on the 29). 3. The left first weeding tine (46) and the right first weeding tine.
The crushed soil weeding device for a cultivator according to claim 1, wherein the weeding tine (47) is disposed with the terminals crossing each other. 4. The left-hand second weeding tine (59) on the right-hand second
Weeding tine (61) is the terminal sickle blade (60) and (62)
Cultivator for cultivator, which is arranged with the position shifted back and forth.