JPH119005A - Tine type weeding machine to be set to cultivator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manifest the intrinsic action by reducing the pressure loading on the spring tines. SOLUTION: The slide shank 12 is attached onto the side of the midrib beam of the cultivator, 4 members of the supporting member 5 having the weight receiver, the base frame, and a couples of parallel cross members are pivotally attached to form the automatic height-controlling mechanism. One steel wire is folded in a U-shape at its almost middle point to form the dogleg shape and the reversed dogleg shape in the plain view in the middle of scratching part 2a thereby constructing the spring tine 2. The lower end of the supporting member 5 and the fitting part of the spring tine 2 are jointed via the jointing member 3, further the gauge plate 1 is constructed comprising the soil inlet curved in an arc having a radius larger than the one end of the top fitting part followed by the soil-sliding part. This gauge plate 1 is fitted to the horizontal part 3a of the jointing member 3 at its fitting part adjacent to the spring tine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tine type weeding device mounted on a cultivator to be pulled by a tractor.

[0002]

BACKGROUND OF THE INVENTION A tine type weeding device, more specifically, a spring tine type weeding device.

A weeding apparatus for physically killing weeds that have germinated about several millimeters to about several tens of millimeters from the ground surface of a field is provided. The herbicidal action is such that a steel wire extends several millimeters below the ground surface in parallel with the ground surface, and The roots of the weeds are cut or hooked to promote separation of the roots that have settled up and the surrounding soil particles, and are exposed to the sun and the atmosphere to replenish moisture. It is a spring tine type weeding device used for a weeding method of cutting, drying and killing.

[0004]

2. Description of the Related Art Weeding means using a spring tine has existed since a relatively old age, and the structure of the spring tine itself and the development and improvement techniques of a weeding apparatus equipped with the spring tine are described in, for example, Utility Model Application Publication Showa 55 No. 113008, and Japanese Patent Application No. 252801, 1997, No. 7
There is a published technology such as Japanese Patent No. 4809.

[0005]

The technology of the spring tine type weeding device disclosed as described above was the most advanced technology at the time of filing the application.

[0006] The spring tine method as one of the field weeding means has a feature not found in other weeding means capable of weeding up to the root of crops.

However, the herbicidal efficiency has been poor due to the passive action due to the relationship with the crop, etc., and improvements and improvements have been made with the aim of improving the herbicidal efficiency. However, the herbicidal effect has improved and improved, and the efficiency has been steadily increasing.
We haven't seen the 00 percent best.

[0008] At first glance, even in a field that looks flat, the weeding operation is performed at a location of millimeters from the ground surface. Therefore, when the field surface is viewed microscopically in millimeters, the soil layer that is continuous and uneven is parallel to the ground surface. In order to move the tines to be advanced in parallel with the surface of the ground, more and more fine work is required rather than relying on vertical movements by electronic sensors.

[0009] However, when an electronic sensor is used, the surface events that have not been watched electronically in the past, such as the characteristics of the soil cortex, the characteristics of the soil type, etc.
There are a wide variety of setting conditions before work, such as the hardness of topsoil, the size of soil particles, the presence of gravel, the moisture content, the ridge shape, the memory of the (shape) form of the crop, and the scattering of sediment due to the wind direction, etc.
In addition, the set condition correspondence changes every moment, and as a result, each time the setting change is pursued, considering that an operator who cannot fully cope with these input setting operations, after all, the conventional work is performed. Concludes that is easier. Therefore, electronic control schemes were considered premature, which, at some point in the near future, reached the point where conventional mechanical auto-tuning is currently the best improvement.

A conventional spring tine, that is, one in which a plurality of steel wires are bundled to form a set of tines is fixedly supported at one end of the tine, and a uniform action is expected over the entire length of the working portion. However, since the cross section is about 2 mm in diameter and the working portion is long and the supporting portion is one end, it is difficult to expect uniform action over the entire length of the working portion. It is assumed.

When the above-mentioned action is expected based on the above-mentioned material, it is unavoidable that the tine has a strong and structural shape, the vicinity of the fixed end of the tine is formed into a plurality of spiral shapes, and the tine is provided with an action part. The term "spring tine" is used for its elasticity and its elastic action.

As described above, the evaluation of the herbicidal efficiency under the conditions covering all the characteristics of the field to be operated is consequently dependent on the configuration of these tine type weeding tools.

Another object of the present invention is to provide a tine-type weeding tool mainly comprising a spring tine.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a support member on which a spring tine is mounted with a gauge plate in contact with a soil surface to reduce a load pressure applied to the spring tine and to exert the original function of the spring tine. Things.

[0015]

According to the present invention, as a means for achieving the above object, a slide shank having a base frame is mounted on a side of a bone beam of a cultivator,
A supporting member provided with a weight receiver capable of detachably attaching and detaching the weight, and a horizontal member in which two of the base frame are parallel to each other;
The members are pivotally connected to form a parallelogram link to form an automatic height adjustment mechanism.
It is bent into a letter shape to form a mounting part, and each of the two parallel rods is twisted outward multiple times to form a resilient part, from the outer end of which is a rising part and waving backwards It is bent so as to move to the rake section, and a spring tine is formed in the middle of the rake section by forming a square in a plan view and a reverse in a plan view, and a lower end of the support member and a spring are formed. The tine is combined with a mounting portion of the tine via a connecting member.

Further, the present invention provides a gauge plate having a sled shape made of a steel plate, having a soil introduction portion curved into an arc shape having a radius larger than one end of the mounting portion at the tip, and then having a soil surface sliding portion. The mounting portion of the gauge plate is attached to the horizontal portion of the connecting member adjacent to the spring tine.

[0017]

DETAILED DESCRIPTION OF THE INVENTION
In order to allow two sets of pairs to be run on both sides of the planted tandem crop, one set of tractors allows, for example, at least four furrows to be able to carry out weeding at the same time. Spring tines are installed in parallel.

A plurality of bone beams 7 are arranged at equal intervals on a main frame connected to the rear of the tractor in a direction perpendicular to the traveling direction of the tractor. A weeding device with one set of spring tines is installed for each.

Of the plurality of bone beams 7 arranged in parallel, those at intermediate positions except for both sides are provided with one set of weeding devices on both sides of one bone beam 7, and therefore, A set of weeding devices is installed inside each of the above-mentioned outer ones only.

A slide shank 12 is inserted through and fixed to a chuck bracket 11 attached to the side surface of the intermediate bone beam 7 at the intermediate portion in the longitudinal direction.

The slide shank 12 can be moved in the longitudinal direction and controls the gap size of the spring tine 2 to be described later, that is, the gap size for clamping the crop. A vertical base frame 14 is fixed to one end of the adjustment piece 13 while enclosing and engaging the adjustment piece 13.

The supporting member 5 adjacent to and parallel to the vertical base frame 14 is provided with the ends of two horizontal members 6a and 6b which are parallel to the top and bottom and are horizontal. A weight receiver 4b, which is rotatably connected to each of the frame 14 and the support member 5 so as to form a parallelogram link 6, and is capable of loading and fixing an arbitrary number of weights 4a on a part of the support member 5 in a freely addable and removable manner. And the two cross members 6a, 6b
One of which is formed longer than the pivotal connection with the base frame 14,
The balancer (weight) 4c is attached to the tip of the automatic height adjustment mechanism 4.

The spring tine 2 is attached to the lower end of the support member 5 of the automatic height adjusting mechanism 4 via an L-shaped connecting member 3.

The spring tine 2 is made of a steel wire, and is a rake section 2 that travels several millimeters below the ground surface in a field.
a, a rising portion 2b, a resilient portion 2c, and a mounting portion 2d. Further, in the scraping portion 2a, a "-" shape in plan view and "inverted" in opposing tines forming a pair. A bent portion 2e is formed in the shape of "".

The mounting portion 2d at the upper end is a mounting portion for mounting on the horizontal portion 3a of the connecting member 3.

Adjacent to the mounting portion 2d, a resilient portion 2c formed by winding and twisting a plurality of times is formed. The rising portion 2b connected via the resilient portion 2c extends from the lower end of the connecting member 3 to the ground. Rake portion 2 which forms a height part and is almost horizontal
In the portion up to a, particularly in the rising portion 2b, the portion is directed obliquely rearward so as to be in a "fluttering" state rearward, or is connected to the scraping portion 2a in an arc of a large radius. , In the case of an oblique formation, the rising portion 2
Avoid the formation of a curved angle so that b and the rake section 2a can be distinguished,
The radius of curvature should be as large as possible.

This curved portion avoids a situation where it becomes a fulcrum of load when it is pushed up from the ground, thereby preventing the repelling action of the rake section 2a. This is to shift to a fluttering state.

Further, a bent portion 2e of about 90 degrees in plan view is provided at a substantially middle point in the longitudinal direction of the scraping portion 2a so that the pair of spring tines 2 whose outer angles are opposed to each other is brought close to the same location, and The opponents face each other so as to reach the limit of approach.

In the spring tine 2, the substantial constituent means shown in the figure is such that one steel wire is bent at a substantially middle point into a U-shape to form a mounting portion 2d, and each of two parallel rods is formed. Twisting outward a plurality of times to form a resilient portion 2c, forming a resilient portion 2b in parallel from the outer end of the resilient portion 2b, and bending to move to the rake portion 2a while waving backward, The spring tine 2 is formed in the middle of the rake section 2a by forming a "ku" character and a "reverse" character in plan view.

The mounting part 2d of the spring tine 2
And the horizontal portion 3a of the connecting member 3 are connected with fasteners such as bolts and nuts. The gauge plate 1 to be mounted at the same position is mounted so that the longitudinal direction thereof is parallel to the midbone beam 7. On the other hand, the spring tine 2 is attached to the midbone beam 7 at an angle of about 40 degrees obliquely rearward in a plan view.

As described above, the spring tine 2 is disadvantageous in that the rake portion 2a is made to respond rearward to a change in the earth pressure which is generally affected by the bent structure described above, particularly, the shape of the rising portion 2b. The rear end flip-up action is avoided, and if the pushing-up phenomenon cannot be completely processed by the backward waving action, it is avoided by the upward turning action of the horizontal portion 3a of the connecting member 3, and if it is still not absorbed, the automatic height is increased. The parallelogram link 6 in the height adjustment mechanism 4 causes the intermediate bone beam 7
It is possible to adapt to the state of the surface of the ground without continuing to maintain a robust rebound according to the unevenness of the surface of the ground with respect to the standard position.

When such a thrust-up phenomenon is expected to occur frequently, a considerable amount of weight 4a is applied to the weight receiver 4b in order to compensate for the expected underload on the weight receiver 4b of the automatic height adjustment mechanism 4, and the spring tine is applied. 2 is expected to run normally.

The gauge plate 1 has a sled shape made of a steel plate, and the mounting portion 1c at the tip is fixed to the connecting member 3.
A soil surface sliding portion 1b is provided following the soil introduction portion 1a curved into an arc shape having a radius larger than the fixing point.

The gauge plate 1 is mounted so as to be substantially parallel to the midbone beam 7, and the automatic height adjustment mechanism 4 adjusts the height with the supporting member 5 to slightly press and slide on the soil surface. Is mounted so that it can be expected, and when it encounters a convex surface on the surface of the gage, the curved surface of the soil introducing portion 1a of the gauge plate 1 and the horizontal portion 3a of the connecting member 3 ascend the ascending operation and adjust the height. Is absorbed by each elastic action.

The cultivator is provided with a gauge wheel 9 in order to keep the depth of the scraping claw 8 for digging work, which is its original purpose, constant.
Since the bone beam 7 is always towed while maintaining the set height by mounting the etc., the mounting height of the weeding device of the present invention is based on the bone beam 7 having a fixed height position. Things.

In the gauge plate 1, the load on the soil surface sliding portion 1b, which is subjected to the contact pressure due to the unevenness of the soil surface, particularly the convex portion, is transmitted to the arc-shaped soil introducing portion 1a, and the shape of the soil introducing portion 1a is changed. The fluctuating pressure which is absorbed by a typical action but cannot be absorbed is absorbed by the horizontal portion 3b of the connecting member 3 connected to the soil introduction portion 1a.

If the push-up load that cannot be absorbed yet is large, the load is raised via the support member 5 against the load applied by the automatic height adjustment mechanism 4.

As described above, the permissible irregularities on the ground surface are absorbed by the gauge plate 1, and the horizontal portion 3a of the connecting member 3 on which the spring tine 2 is mounted almost maintains a stable state.

The gauge plate 1 replaces the load applied to the spring tine 2 which is easily affected by the unevenness of the surface of the ground. The gauge plate 1 exerts the original function of the spring tine 2 to reduce the extra load.

As described above, the spring tine type weeding device in the cultivator configured as described above is as follows.
Although the spring tine 2 and the gauge plate 1 are attached to the tip of the horizontal portion 3a of the connecting member 3 in a manner that the spring tine 2 and the gauge plate 1 are integrated with each other, the minute The gauge plate 1 bears all of the variation in load due to the protrusion and sinking of the unevenness, but if the unevenness is within the longitudinal dimension range of the gauge plate 1, it is accepted as an average value,
This does not transmit the vertical swing to the connection member 3 by absorbing the vertical movement received by the rear soil surface sliding portion 1b in the arc-shaped soil introducing portion 1a.

On the other hand, in the spring tine 2, even if there are irregularities on the running ground surface, the change in load due to the irregularities is received by the gauge plate 1, so that no load other than the original action of the spring tine 2 is received. The stable mounting base, that is, the tip of the horizontal portion 3a of the connecting member 3 can be used as a base to fully exert the original function of the spring tine 2.

Further, in the shape of the spring tine 2, since the rake portion 2a and the rising portion 2b, which submerge in the soil, are connected by an arc side having a large radius, even if the traveling earth pressure changes. The rake portion 2a flutters backward with the natural body, and as a result of the fulcrum effect generated in the case of forming a corner as in the prior art, the spring tine approaching the root of the crop by eliminating the flipping action to the upper rear portion has been eliminated. In addition, the spring tine 2 of the present invention, as the spring tine 2 sunks below a set depth from the surface of the ground as the original purpose, generates a minute vibration phenomenon due to the received traveling earth pressure, and exhibits a stirring action. It acts on the rhizomes of such weed seedlings, cutting off the roots of mustaches and soil particles and exposing it to the surface of the ground to act to cut off water supply. .

[0043]

As described above, the present invention relates to a weeding device for a cultivator, in which a gage plate and a spring tine mounted from a support member connected to a midbone beam via a connecting member are provided. The spring tine fully exerts the function of the original structure of the spring tine without any hindrance by the change load because it carries the changing load received instead of the tine,
By stirring the desired ground surface, weeds can be eradicated immediately after germination.

In the spring tine, the rising portion and the subsequent rake portion are continuous with an arc shape having a large radius, so that the rake portion has a fluttering action even under a traveling earth pressure. And a desired weeding operation can be performed by advancing the set depth layer from the ground surface and agitating the stratum by a minute vibration action due to the resistance accompanying the progress.

[Brief description of the drawings]

FIG. 1 is a plan view of a cultivator showing a mounted state of a pair of spring tines.

FIG. 2 is a side view of a cultivator equipped with a spring tine.

FIG. 3 is a front view of an automatic height adjustment mechanism equipped with a spring tine.

FIG. 4 is a rear view of the weeding device.

FIG. 5 is a side view of a gauge plate connected to a connection member.

FIG. 6 is a side view of a spring tine.

FIG. 7 is a plan view of a spring tine.

FIG. 8 is a side view of the gauge plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gauge plate 1a Soil introduction part 1b Soil surface sliding part 1c Mounting part 2 Spring tine 2a Scavenging part 2b Rising part 2c Resilient part 2d Mounting part 2e Bending part 3 Connecting member 3a Horizontal part 4 Automatic height adjustment mechanism 4a Weight 4b Weight receiver 4c Balancer (weight) 5 Support member 6 Parallelogram link 6a Cross member 6b Cross member 7 Medium beam 8 Claw 9 Gauge wheel 10 Crusher ring 11 Chuck bracket 12 Slide shank 13 Fine adjustment piece 14 Base frame

Claims (2)

[Claims] 1. A support member 5 having a slide shank 12 having a base frame 14 attached to a side of a cultivator middle bone beam and a weight receiver 4b capable of detachably attaching and detaching a weight 4a; And four parallel members 6a and 6b, which are parallel to each other, are rotatably connected to each other to form a parallelogram link 6 to form an automatic height adjustment mechanism 4, and one steel wire is substantially in the middle. The point is bent into a U-shape to form a mounting portion 2d, and each of the two parallel rods is twisted outward a plurality of times to form a resilient portion 2c, and from its outer end to a rising portion 2b. The spring tine 2 is formed by bending so as to move to the rake portion 2a while waving backward, and forming a square shape and a reverse shape in plan view in the middle of the rake portion 2a. And a lower end of the support member 5 and a mounting portion of the spring tine 2. Tyne herbicides device attached to cultivators, characterized by comprising united via the connecting member 3 and d. 2. A sled type made of a steel plate, and a mounting portion 1 at a tip end.
soil introduction part 1 curved into an arc shape with a radius larger than one end of c
The gauge plate 1 is formed as a soil sliding portion 1b following the symbol a. The mounting portion 1c of the gauge plate 1 is attached to the horizontal portion 3a of the connecting member 3 adjacent to the spring tine 2. The tine type weeding device attached to the cultivator according to claim 1.