JPH0779561B2 - Weeding device attached to cultivator etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding device attached to a cultivator or the like.

[0002]

[Technical background] Agricultural work, especially "weeding work" in the field
The term "weeds" refers to the work that takes place during the period during which weeds germinate and their bilobes appear or do not come out. Generally, weeds or plants to be mowed have a plant length of 50 to 200 mm. Very different from the above, the weed height in the field is 2 mm to 3 mm even if the exposure level from the surface is large.
The limit is about millimeter, and it is usually performed at the time when it grows about 1 mm to 1.5 mm.

Therefore, the ground root of the germinated weed, which is about 1 mm to 2 mm above the surface of the ground, is still a straight root,
It is a long one, and it is the extent to which the beard roots appear or not, and it is said that it is optimal to carry out the "weeding" work before such time.

Weeding in these fields is carried out by cutting the roots of the plants to be weeded from their roots in the soil around them.
Achieve that purpose.

These working forms are based on means for cutting off the active root action by stirring at a depth of 1 mm, 2 mm or 3 mm in some cases from the surface of the field, so that weeds can germinate. Of these, the weeding work is ideally performed daily if possible.

[0006]

2. Description of the Related Art The action of a rotary weeding wheel of a weeding device used as a weeding work means is controlled by a progressing action such as power or human power, regardless of the shape of the weeding action portion and its configuration, and It is known as a mainstream that the configuration is designed for the purpose of weeding work by using the rotating action by the contact resistance with the outer circumference of the weeding wheel.

[0007]

As described above, in the conventional weeding device, in particular, the rotary weeding wheel, like the general driven wheel, its rotational action is promoted by the thrust generated by the pulling or pressing of the external force. As a result, a phenomenon called rotation due to ground resistance occurs.

A certain point on the outer circumference of the ring is in contact with a certain point on the ground contact surface.

Replacing this with a weeding wheel, the weeding wheel is merely rolling on the weeding ground on the weeding surface by its contact resistance.

In this case, the weeding wheel cannot expect the root cutting action of weeds and the agitation action of the ground surface for the purpose of weeding. Therefore, the conventional weeding wheel is similar to the general driven wheel described above in that the grounding resistance is promoted by the thrust. It is natural that the efficiency of agitation work at the surface of the ground for the weeding is not good because it is only the rotation action by the.

In a rotary weeding wheel which receives a moving propulsive force by pulling or pressing by an external force, the rotation of the weeding wheel which is to be rotated by the contact resistance with the ground to be weeded is set at the contact point with the ground. Obtained at the inner circumference position in the radial direction from the outer circumference, the outer circumference is moved from the grounding point at the inner circumference position to a certain range near the grounding point, and the grass to be weeded is stirred, and
The effect of promoting the desired weeding work is used in the present invention .
It is the main purpose of rotating weeding wheels .

Further, as described above, although the intended purpose can be generally achieved by the surface agitating action by the rotation of the rotary weeding wheel, on the surface of the earth, a hardening skin-like phenomenon is caused by the water content of the surface, the degree of hardening, etc. In some cases, even in such a situation, even if the seedling weeds are not completely separated and bound to the small-sized soil mass even by the crushing action of the rotary weeding wheel, the germination may occur. Alternatively, even if the roots are exposed to the air so that they can be exposed to water, if they are supplied with water such as rainfall, the weeds that are about to die may blow back and continue to grow. .

The weeding aimed at by the present invention is, as described above, intended to eradicate weeds of about 1 mm to 2 mm, which are shortly after germination, and any one of them remains. Since weeds cannot be recognized, the germination of weeds bound to the small-sized soil mass requires complete separation from the small-sized soil mass, and the action is further crushed by the rotary weeding wheel. In order to expect the action, a spring tine is provided together with the rotary weeding wheel near the installation position of the rotary weeding wheel, and the effect of complete weeding is expected.

[0014] Furthermore, a spry attached to these rotary weeding wheels
Soil in the field for weeding work
Appropriate weight for quality and soil properties due to weather during the work
For automatic height adjustment device and soil surface that can be freely added and removed
Supporting parts such as angle adjusting device that can freely adjust the working angle
Through the timber, these rotary weeding wheels and spring
The synergistic action with the
Providing proper depth of dive for soil layer
In order to perform more efficient weeding work.
It is intended.

[0015]

As a means for achieving the above object, the present invention provides a central circuit.
A tapered weeding part is formed on the outer periphery of the transfer base
The back surface of the rotating base 3 on the outer surface where the weeding section and the weeding section are connected.
Concentric drive base with top protruding at the most protruding position
A circular weeding wheel with multiple protrusions on the circle and steel wire
Upright so that it has a stepped shape that is substantially parallel to the height direction.
Repulsion part with locking bar at the end of the upper piece formed through
And the spring tine formed so that the lower piece becomes the ridge.
A tie consisting of an upper piece and a mounting member that is locked to the locking bar.
4 sides parallel to each other by pivoting the vertical and horizontal links
Forming an automatic height adjusting device that forms a shape,
Connect the angle adjustment device to the lower end, and part of the horizontal link.
To be able to freely attach and remove the weight to the provided weight locking piece
The support member and the shaft of the circular weeding wheel of the support member
Connected to the angle adjusting device, in the tine type weeding means
Connecting the mounting member to the angle adjusting device of the support member 6,
Circular weeding wheel of the two vertical links in the support member
2 as well as the middle of the vertical links that do not attach the tine-shaped weeding means
Can be fixed to the chuck bracket on the bone beam
It is those formed by the.

[0016]

In the weeding device mounted on the mid-bone beam of the cultivator towed by the tractor, a circular weeding wheel, which is attached together with a spring tine described later, is rotatably pivotally attached via a support member and an angle adjusting device. It is a thing.

This circular weeding wheel has a substantially shallow dish shape, and a taper portion corresponding to the edge of the dish shape is used as a weeding section on the outer circumference of a rotating base portion corresponding to the bottom of the substantially shallow dish shape. A drive unit is provided at a position in the vicinity of the tangent side of the portion and the rotation base, and on a surface corresponding to the back surface of the dish body so as to project from the back surface position.

In the circular weeding wheel thus constructed, in the weeding section provided in a tapered shape on the outer periphery of the rotary base, the radial position of a certain ground contact point of the weeding section is adjusted so as to be parallel to the ground to be weeded. It is to be installed. That is, the axial center position of the circular weeding wheel is adjusted by the angle adjusting device described above on a line that is oblique to the covered weeding ground.

The weeding portion of the circular weeding wheel thus constructed is buried about 1 mm to 1.5 mm from the installation surface substantially due to the weight of the apparatus and soil quality, and further, the attachment / detachment of a weight, which will be described later, It can be buried in a deep layer by lever action by the weight mounting position, and thereby the range of action can be agitated within a range of several tens of millimeters from the ground surface.

At this time, the inner peripheral end of the weeding section, that is, the drive section provided at the outer peripheral position of the rotary base has a form of being buried in the soil much deeper than the weeding section.

When thrust is applied to the circular weeding wheel in this state, the drive unit receives the most contact resistance of soil, and the drive unit is stopped in response to the propulsive force of the entire circular weeding wheel. If there is, it is converted into the action of rotation by the contact resistance with the soil in contact.

When the circular weeding wheel shifts to the state of rotation due to the above-mentioned action, the point where the extension of the radial line extending from the center of the circular weeding wheel that passes through the drive part serving as the fulcrum axis and the outer periphery of the weeding part intersect up to that point. It has the effect of moving backward on a circle whose radius is the distance of.

That is, the outer periphery of the weeding part of the circular weeding wheel is
It exhibits a different action from the drive unit that rotates on the ground surface that is fixedly opposed to each other instantaneously, and forms a stirring or "nagi" action in the ground.

The above-mentioned weeding part is a weeding rod made of a steel wire rod, and is installed on the radiation from the center of the circular weeding ring, so that the rotation of the action causes the weeding rod to start immersing in the soil. While rotating in the soil due to the resistance that gradually increases as it progresses in the soil, it agitates the lower layer of several millimeters to ten and several millimeters above the ground surface, and rotates while promoting root cutting of weeds and separation of the soil from the roots. With the sequential reduction of contact resistance with the soil, the warping phenomenon that had been resisted until then becomes a repulsive action at once, projecting to the surface of the earth and shifting to a rotating action in the air.

At this time, the weeding rod in the rear position acts in the same manner as that of the front weeding rod and becomes a submerged state in the soil to exhibit a stirring action.

The results of the action results of the above-mentioned rotary weeding wheel are as follows: the soil quality of the field where each weeding operation is performed, that is, the viscosity, soil particle size, small stones containing stones, etc. However, the situation is different even in the same field depending on the water content of the surface layer on that day, the weather on the previous day, or the rainfall on the previous day or near last day, the wind condition, etc. During the daytime or at dusk, the surface condition changes moment by moment.

In the change of the surface condition, the most conspicuous state is the hardening phenomenon of the shallow surface layer due to the fine weather after the rain of the last day and the strong wind weather or the rapid humidity decrease, that is, the "Casabata" shape of the surface. Weeding work under changing conditions.

The surface topography in such a situation is a very shallow layer, but the degree of consolidation is high, and the field in this state can be operated at high speed.
In addition, by performing weeding work with a rotating weeding wheel, even with a strong rotating action, even the solidified surface layer can be easily crushed and stirred, but inside it is a small diameter small particle You may see the residual phenomenon of.

Even if one germinated young weed remains in such a small clod grain and the germinated part and the fine part of the root are exposed, even if exposed to the sun, the small clod attached The empirical rule from the previous experience is that the young grass weeds whose grains have a hygroscopic effect and are exposed to the air, keep their life, which eventually transforms into a growth effect, which then grows and revives as weeds. It's a fact that I'm acquainted with.

Since the weeding work in the field is intended to eliminate the residual and resuscitation of even one germinated weed, it is necessary to recognize the presence of the small-sized clod particles mixed with the germinated weed described above. Since it is not possible to do so, small diameter soil clod particles left by the weeding work of the circular weeding wheel are further
At the same time, the spring tines are installed side by side for the purpose of crushing at the same time.

The provision of the spring tines is based on the premise that the detaching operation can be performed based on the situation of the field to be weeded. However, the spring tines have a large cultivating action in addition to the weeding action. Therefore, although the intended action is different, since the effect as agricultural work is great, the spring tine only has a circular shape because it is more advantageous than the harmful effect of mounting the spring tine. There is no reason to remove it by separating it from the weeding wheel.

As described above, the circular weeding wheel is mounted from the mid-bone beam through the support member and the angle adjusting device, but the spring tine is the same as the angle adjusting device for mounting the circular weeding wheel. The mounting member including the angle adjusting device configured as described above is combined with the angle adjusting device on the side of the circular weeding wheel and mounted as a part of the supporting member mounted to the mid-bone beam.

The tine weeding means is composed of the above-mentioned mounting member and a spring tine formed of a steel rod and having a substantially stepped parallel shape. The mounting member has a substantially inverted L-shape, and its vertical portion is The angle adjusting device is provided, and the base end of the spring tine is fixed to the horizontal portion.

The tip of the spring tine is basically mounted so as to be oriented on the extension line of the longitudinal center line of the horizontal portion of the attachment member, but if desired, the attachment portion may be attached to the extension line. With the center as the center, it is possible to mount and attach at an angle deviated to a certain desired angle, and it is possible to fix at that position.

The weeding work width dimension of the circular weeding wheel is the length of the oblique side of the taper portion in the radius of the circular weeding wheel, and the spring portion is the action portion of the lower side of the attachment member. In the weeding working width of the preceding circular weeding wheel, the working width of the straw portion is basically equal to the working width dimension of the circular weeding wheel, because the slanting installation position matches the width. Therefore, the coarse and fine crushing action of the ground surface performed by the circular weeding wheel is performed again for the re-fine crushing action.

This spring tine has a rake portion which is continuous in a position parallel to the rake portion by a rising portion having a set dimension with respect to a mounting portion to be mounted on a horizontal portion of a mounting member. Similar to the weeding part of No. 1, it is designed to infiltrate within the range of 1 mm to 1,5 mm to 10 and several mm from the surface of the weeded part.

With regard to the directivity of the spring tines, when the spring tines are mounted through a certain angle from the longitudinal centerline of the horizontal portion of the mounting member, the working width is the working width of the circular weeding wheel described above. More deviating,
The work with the circular weeding wheel is good for the weeding action at the root of the extremely dangerous work and the surface stirring operation.

Even when such a circular weeding wheel is used alone or when the circular weeding wheel is used in combination with a spring tine, the weeding and the weeding ground surface layer are desired to have a stirring action as a "ridge ridge" or a "ridge gap". The ground contact angle is adjusted according to the inclination of the work ground, and the clearance between adjacent circular weeding wheels corresponding to the work type is also prepared as one of the starting inspection work at the same time.

At first glance, it seems that the work ground is cultivated flush with each other, but in reality, there is a large and small uneven surface, and in the work of this uneven surface, the circular weeding wheel is rotatable. The height during running is automatically adjusted by the parallel quadrilateral link provided at the intermediate position of the supporting member.
The low difference is automatically absorbed, and the weeding rod in the soil allows the set desired soil layer position to rotate, and the spring tine inclines a predetermined depth position in the soil to sneak the set width dimension range. It is designed to be able to run.

In order to improve the accuracy, the weight corresponding to the weight and the lever action is attached in the middle of the supporting member according to the soil condition and the condition of the ground.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to the drawings, an embodiment of the present invention will be described. In a circular weeding wheel 2 of a weeding device, a tapered weeding portion 4 is formed on the outer periphery of a central rotating base 3 in a substantially shallow dish shape. , The outer surface of the former rotary base 3 and the latter weeding part 4 in a row, that is, the position protruding from the back surface of the rotary base 3 on the surface that is the back side when viewed as a shallow dish is called the top part The drive unit 5 and the rotation base 3 are provided on a concentric line.

As an embodiment of the present invention, the above weeding section 4
Is composed of a plurality of weeding rods 9 made of steel wire.

The rotating base 3 is composed of two discs having the same diameter,
That is, it comprises a push plate 10 and a receiving plate 11, and the latter receiving plate 1
1, the outer periphery of which is formed as a tapered edge 11a, and each disk is provided with notches 12 of the same shape in the radial direction from the outer periphery on a plurality of radiations 3a drawn at equal angles, and from the inner end thereof. Further, a small diameter hole 13 is bored at a point intersecting with the concentric circle inside, and a plurality of bolt holes 14 are further provided, and a bearing mounting hole 15 is further provided at the center.
Has been drilled.

The weeding rod 9 is bent at its base end to form a locking portion 16 for connecting to the rotary base 3, and a portion approaching the locking portion 16 is wound by one turn winding. Roll and drive unit 5
And a tip end is wound in a vertical direction similar to the twisting direction of the drive section 5 to form an annular end 17.
For bending left and right bends or straight rods by forming a curved portion 18 by largely warping between the driving portion 5 and the driving portion 5 in the above-described vertical bending to the right and left. Then, these are V-shaped widening with the drive section 5 at the bottom, and the opening angle is about 1
It is about 50 degrees.

Each of the weeding rods 9 formed in this manner engages the engaging portion 16 at the base end with the small-diameter hole 13 and the notch 12 of the receiving plate 11 in the rotary base 3, and the driving unit 5 causes the receiving plate to receive. 1
The small-diameter hole 1 provided so as to be integrated so as to be on the back side of 1
When the weeding rod 9 is engaged with all of the cutouts 3 and the notches 12, the push plate 10 is brought into contact therewith, and the bearing 19 is inserted into the bearing mounting hole 15 at the center.
It is possible to configure a single circular weeding wheel 2 by using the flange portion, the two push plates 10 and the receiving plate 11 each with a fastener 20 composed of a bolt and a nut.

The shaft member 21 is composed of a shaft 22 and a mounting piece 23. A pin hole 24 is formed below the mounting piece 23 in which the top portion of the shaft 22 made of bolts is obliquely connected and fixed. An arcuate elongated hole 25 is formed on a circle having a certain radius as the center.

The main part of the support member 6 is an automatic height adjusting device 7 composed of a parallelogram link mechanism. These are two horizontal links 27, that is, a horizontal upper link 27a and a horizontal lower link. 27b and two vertical links 28, that is, each of the four links of the vertical front link 28a and the vertical rear link 28b, can be freely pivoted at four locations by pins so that they transition from square to parallelogram. Is to be pivoted to.

In the automatic height adjusting device 7 as described above, the shaft member 21 is attached to the lower end of one of the front and rear vertical links 28 via the connecting piece 29.

The shaft member 21 is provided on the lower side surface of the connecting piece 29.
A pin 30 that can be inserted into the pin hole 24 is planted and protruded, and a bolt hole is provided at a position separated from the pin 30 by a radial dimension equivalent to the radial dimension in the positional relationship between the pin hole 24 and the arc-shaped elongated hole 25. 31 is bored and the pin 30 is attached to the shaft member 21.
Of the fixing tool 26 into the arc-shaped elongated hole 25 and the bolt hole 31, and a nut is screwed to the protruding end to temporarily fix the angle adjusting device 8. To form.

In the height automatic adjusting device 7,
A horizontal weight link 27a pivotally attached to a vertical link 28 to which the upper end of the angle adjusting device 8 is connected is extended, or a weight lock is attached separately from the upper portion of the vertical link 28 in the horizontal direction. A plurality of small-diameter holes are formed in the piece 32 so that the weight 33 to be engaged can be locked in the small-diameter hole at an appropriately set location.

Furthermore, the tine type weeding means 36 is provided at the rear position where the circular weeding wheel 2 is provided.

The tine type weeding means 36 comprises a spring tine 37 as a main member and an attaching member 38 for attaching the spring tine 37 to the connecting piece 29 of the supporting member 6.

The spring tine 37 is made of a steel wire like the weeding rod 9 which is the main member of the circular weeding wheel 2. The lower part of the spring tine 37 serves as a working part 39 and the upper part thereof serves as a mounting part 40. In addition, a positional relationship that is parallel or approximately parallel to the height 39 with respect to the gourd portion 39 and the mounting portion 40 via the intermediate rising portion 41 is formed by the rising portion 41 in a stepped manner, and The mounting part 40 is connected to the mounting part 40 via an elastic part 42 formed by winding and twisting the material steel wire a plurality of times. Further, a locking bar 43 through which a fixing bolt 44 can be inserted is formed at the wire end of the mounting part 40. ing.

Further, the above-mentioned mounting member 38 is mainly in a substantially inverted L shape composed of a horizontal portion 38a and a vertical portion 38b, and edges 38c are formed on both sides thereof in the inner angle direction, and its edges are formed. The rigidity is strengthened, and further, the front end of the horizontal portion 38a is bent so as to be parallel to the vertical portion 38b, and a plurality of continuous chevron-shaped notches are formed at the end sides thereof to form tine locking portions 38d. A bolt insertion hole 38e through which the fixing bolt 44 can penetrate is formed at substantially the center of the horizontal portion 38a provided with the tine locking portion 38d.

Furthermore, in the vertical portion 38b of the mounting member 38, the pin hole 24 'and the pin hole 24' having the same relation as the pin hole 24 formed in the shaft member 21 and the arcuate elongated hole 25 are provided. A shaft member 21 having a circular weeding wheel 2 attached downward is fitted in the groove formed by the edges 38c formed on both sides in the inner angle direction of the vertical portion 38b, and the pin hole 24 is formed. , 24 'and arcuate slot 2
5 and 25 'are aligned with each other, the pin 30 implanted in the connection piece 29 is inserted into the pin holes 24 and 24', and the fixture 26 such as a bolt is connected to the arc-shaped elongated holes 25 and 25 'and connected. After passing through the bolt hole 31 of the piece 29 and adjusting the shaft member 21 pivotally attached to the circular weeding wheel 2 together with the attachment member 38 to any desired setting angle, the nut is screwed and fixed. Is.

In the tine type weeding means 36 described above,
As described above, the spring tine 37 is attached to the horizontal portion 38a of the attachment member 38 such that the attachment portion 40 located above the spring tine 37 is abutted and the line end of the attachment portion 40 is abutted. After matching the hole center of the locking bar 43 provided on the and the hole center of the bolt insertion hole 38e,
Insert the fixing bolt 44 to penetrate both of the above,
In addition, the spring tine 37 and the mounting member 38 are integrally fixed to each other by screwing a nut onto the protruding tip portion.

In this way, in the spring tine 37 united with the mounting member 38, the upper mounting portion 40 is closely adhered to the back surface of the mounting member 38, and a part near the elastic portion 42 is formed. , The mounting member 38 is mounted by being engaged with any one of a plurality of continuous mountain-shaped tine locking portions 38d provided on the end sides of the horizontal portion 38a of the mounting member 38. The continuous mountain-shaped tine lock engages against the characteristic of the spring tine 37 fixed around the locked lock bar 43 as a center to enable adjustment of the property in any desired direction. Once removed from the portion 38d, and further rotated to any desired angle left or right against its elasticity,
The directivity of the go portion 39 can be fixed again by abutting and engaging with the valley portion at the position which has reached the proper position.

Slide shank 3 locked to the chuck bracket 34 attached to the midbone beam 1 of the cultivator
5 is provided so as to be orthogonal to the longitudinal direction of the mid-bone beam 1, and the slide shank 35 is not equipped with the angle adjusting device 8 in the automatic height adjusting device 7 in the supporting member 6 described above. The vertical links 28 are firmly fixed in the upright state.

In this way, in the support member 6 attached to the mid-bone beam 1, the shaft 22 at the lower end of the shaft member 21.
Is inserted into the bearing 19 at the center of the circular weeding wheel 2, and the bearing 19
A nut is screwed onto the tip of a bolt-shaped shaft 22 protruding from the lower end of the circular weeding wheel 2 so that the circular weeding wheel 2 is rotatably supported.

Further, similarly to the above, the mounting member 38 is mounted on the connecting piece 29 of the supporting member 6 so as to be superposed on the angle adjusting device 8 connected by the pin 30 and the fixture 26.
In the horizontal portion 38a, the tine type weeding means 36 formed by the spring tine 37 mounted at an angle to direct any desired direction with respect to the longitudinal centerline of the horizontal portion 38a is the circular weeding wheel. The circular weeding wheel 2 is attached to one supporting member 6 in a pair with the circular weeding wheel 2.
Since the tine type weeding means 36 and the tine type weeding means 36 are adjusted to any desired angles by the same angle adjusting device 8, the operation by the adjustment is always provided integrally.

That is, in the circular weeding wheel 2, a ring-shaped end 17 which is a ridge shape of a field in contact with the ground surface and which is a tip of the weeding portion 4 on a horizontal or inclined surface is directed toward the valley side of the ridge and toward the peak. This is also the case with the tine type weeding means 36, and the angles of both of these weeding operation parts are adjusted based on the shape of the work ridge.

In the circular weeding wheel 2, the weeding section 4, that is, the drive section 5 on the weeding rod 9 is used in the weeding action.
Further, a weeding line having a width dimension corresponding to the distance to the annular end 17 is formed, and in the spring tine 37, the working width dimension is different depending on the length of the rake portion 39 and the angle of the running direction thereof. However, it is basically designed to follow the work trace of the preceding circular weeding wheel 2.

In the tine type weeding means 36,
As described above, the mounting angle setting can be changed by the angle adjusting device 8 integrally with the circular weeding device 2, and the directional angle of the stalk 39 of the spring tine 37 can be changed. By engaging any desired setting portion of the portion 38d with the selected valley-shaped recess, fine adjustment can be performed within or outside the width of the working range by the circular weeding wheel 2, and the working performance of the circular weeding wheel 2 can be achieved. Since it is a spring tine that acts more gently than that, it was designed so that it could be operated closest to the root of vegetation.

It is possible to improve the weeding action and the middle tillage action by bringing the tip of the rake portion 39 of the spring tine 37 as close as possible to the root of the planting organism, but these lateral movements are substantially caused. The operation is such that at most about 5 mm is set as one unit, and the detaching operation can be performed with respect to the vegetation.

The operation of separating and contacting the spring tine 37 and the circular weeding wheel 2 with respect to the living organism is to adjust the lateral movement of the slide shank 35 mounted through the chuck bracket 34 from the mid-bone beam 1 and has a small size. After making fine adjustments, this needs to be kept immobile.

As shown in FIG. 16, the slide shank 3
On the side surface of No. 5, a fixing concave and convex portion 35a whose unit is at most about 5 mm is formed.
The bolt that is screwed through is firmly chucked.

As described above, since the fixing concave-convex portion 35a is on the side surface of the slide shank 35 and is inserted into the chuck bracket 34, it is difficult to visually check it from the outside. On the upper surface of the slide shank 35, a fixing display portion 35b having a scale corresponding to the fixing concave and convex portion 35 is provided.

[0068]

The present invention is constructed as described above and has the following effects.

The circular weeding wheel that is pulled and rotates due to the contact resistance with the ground is provided with the drive portion projecting on the lower surface on a circle having a radius smaller than the weeding portion installation position on the outer circumference of the circular weeding wheel. Since the weeding part has its own stirring action and fugitive action in the soil, a greater weeding action can be expected.

Irrespective of the hardness of the ground surface due to the strong rotating action of the circular weeding wheel, the surface soil is stirred and crushed, so that the young germinated weeds in millimeters are separated from the crushed fine small-diameter soil grains and weeded. However, even if young germinated weeds are mixed in the small-sized soil clods due to the residual phenomenon of the small-sized clods in the soil crushed by the strong rotating action of the circular weeding circle, The spring tine, which was installed in parallel with, can further pulverize and enables the complete separation of small-sized aggregates and germinated weeds, which has the greatest effect of eliminating the resuscitation of germinated weeds.

Since the ground contact angle of the circular weeding wheel can be changed from the horizontal position to any desired angle set and the proper angle can be fixed and maintained, the cross-sectional shape of the ridge can be matched.

Further, since the working width of the spring tines can be deviated to the outside of both edge ranges of the working width by the circular weeding wheel, the mounting position of the slide shank and the mid-bone beam can be adjusted, and the vegetation can be rooted. Up to this, it is possible to perform soil agitation work, which allows simultaneous cultivation work with weeding work.

Furthermore, since the angle adjusting device for the spring tine incorporates the angle adjusting device for the circular weeding wheel, it is necessary to change both the spring tine and the circular weeding wheel when it is necessary to change the angle. The above can be changed at the same time by a single operation without breaking the joint positional relationship between them.

Even on the weeding ground that looks like a smooth surface, a small weaving surface is continuously formed, and an automatic height adjusting device that can automatically and appropriately respond to this weaving surface causes the circular weeding wheel to always act at a certain set depth from the ground surface. be able to.

By allowing the weight to be freely added and removed according to the soil quality and the condition of the work ground, the apparatus can be used regardless of the condition such as the soil property and the hardness of the ground surface.

The slide shank allows the space between adjacent devices to be freely set, and the desired setting can be finely set and this can be completely fixed, so that the device can be mounted according to the ridge width, and
By appropriately adjusting each angle adjusting device, it is possible to freely select “ridge ridge”, “ridge ridge”, and “root edge cliff”.

It has a plurality of effects as described above.

[0078]

[Brief description of drawings]

Fig. 1 Side view of a cultivator equipped with a weeding device, Fig. 2 Plan view of a mid-bone beam for explaining the positional relationship of circular weeding wheels installed on a cultivator, Fig. 3 Front view of the main part of Fig. 1, 4 Side view showing a part of the circular weeding wheel in cross section, Fig. 5 Side view of the weeding rod alone, Fig. 6 Plan view of Fig. 5, Fig. 7 Plan view of push plate, Fig. 8 Plan view of support plate, Fig. 9
Side view of the vertical link in the automatic height adjustment device, FIG.
The side view showing the action of the average position of the circular weeding wheel, Fig. 11 The side view showing the action of the rising upper limit position of the circular weeding wheel, Fig. 12
Side view showing the circular weeding position showing the action of the lowermost position of the circular weeding wheel, Fig. 13 Rear view of mounting the circular weeding wheel when the field is regarded as a cross-section, Fig. 14 Circular weeding seen from the rear upper part during the work Perspective view of the wheel, Fig. 15 Top view of the weeding device, Fig. 16 Rear view of the weeding device, Fig. 17 Side view of the weeding device at an average height, Fig. 18 Side view of the weeding device raised to a high position , Fig. 19 Side view of mounting member,
20 is a front view of a mounting member, FIG. 21 is an enlarged front view of a tine locking portion of the mounting member, FIG. 22 is a plan view of a spring tine, and FIG. 23 is a side view of a spring tine.

[Explanation of symbols]

 1 middle bone beam, 2 circular weeding wheel, 3 rotation base, 3a radiation, 4 weeding section, 5 drive section, 6 support member, 7 height automatic adjusting device, 8 angle adjusting device, 8'angle adjusting device, 9 weeding rod Wire, 10 push plate, 11 receiving plate, 11a tapered edge, 12 notch, 13 small diameter hole, 14 bolt hole, 15 shaft mounting hole, 16 locking part, 17 annular end, 18 curved part, 19 bearing, 20 tightening Tools, 21 shaft members, 22 shafts, 23 mounting pieces, 24 pin holes, 24 'pin holes, 25 arc long holes, 25' arc long holes, 26 fasteners, 27 horizontal links, 27a horizontal links, 27b horizontal Lower link, 28 vertical link, 28a vertical front link, 28b vertical rear link, 29 connecting piece, 30 pin, 31 bolt hole, 32 heavy weight locking piece, 33 heavy weight, 34 chuck bracket, 35 slide Ranks, 35a fixing irregularities, 35b fixing display, 36 tine weeding means, 37 spring tines, 38 mounting members, 38a horizontal parts, 38b vertical parts, 38c edges, 38d tine locking parts, 38e bolt insertion holes , 39 gourd part, 40 mounting part, 41 rising part, 42 elastic part, 43 locking bar, 44 fixing bolt.

Claims (1)

[Claims] 1. A taper shape is formed on the outer circumference of a central rotating base 3.
To form the weeding part 4 and the rotary base part 3 and the weeding part 4 are connected to each other.
On the outer surface of the position, the position protruding from the back surface of the rotation base 3 is set.
A plurality of drive units 5 that are located on the concentric line with the rotation base 3.
With the circular weeding wheel 2 installed, it is made of steel wire and has a stepped shape that is substantially parallel to the height direction.
To the end of the upper piece formed through the rising portion 41
The elastic part 42 having the bar 43 and the lower piece become the pallet part 39.
The spring tine 37 formed as described above is used to engage the upper piece and the locking bar 43.
A tine type weeder comprising a mounting member 38 locked to and
Automatic height of parallel quadrilateral with step 36 and vertical / horizontal links
Adjusting device 7 is formed to adjust the angle at the lower end of some vertical links.
Connected the devices 8, 8'and provided in part of the lateral link
The weight 33 can be attached to and removed from the weight locking piece 32.
The support member 6 and the shaft 22 of the circular weeding wheel 2 to adjust the angle of the support member 6.
It is connected to the device 8 and the mounting member 38 of the tine type weeding means 36 is moved forward.
A circular weeder of the two vertical links of the support member 6 connected to the angle adjusting device 8'of the support member 6.
Vertical phosphorus without the wheel 2 and the tine type weeding means 36
Fixed to the chuck bracket 34 of the mid-bone beam 1.
A weeding device to be attached to a cultivator or the like, which is characterized in that it can be worn .