WO2020059323A1

WO2020059323A1 - Weeding brush and weeding attachment and weeding device provided with weeding brush

Info

Publication number: WO2020059323A1
Application number: PCT/JP2019/030553
Authority: WO
Inventors: 勝茂杉本
Original assignee: 山陽熱工業株式会社
Priority date: 2018-09-21
Filing date: 2019-08-02
Publication date: 2020-03-26
Also published as: KR20210053810A; CN111787785B; JP2020043843A; JP6998053B2; CN111787785A

Abstract

A weeding brush (20) is attached to a traveling body that moves through a rice paddy. The weeding brush (20) weeds by turning and is provided with multiple linear elastic bodies (43) and a base (49) to which the linear elastic bodies (43) are fixed. The multiple linear elastic bodies (43) are long and thin, and extend in the direction of a rotation center line (53) and are disposed so as to enclose a vertically long space (52) to form a cage structure that is open at the end.

Description

Weeding brush, weeding attachment and weeding machine having the same

The present invention relates to a weeding brush used for a weeding machine that performs weeding while moving in a paddy field.

除 There are known weeding machines that perform weeding while moving in paddy fields. For example, the weeding machine described in Patent Literature 1 connects a weeding machine to a traveling machine body, and the weeding machine includes a rotatable paddy for weeding and a rake. The paddy field is for weeding by rotating about the horizontal axis with respect to the traveling direction of the traveling body, and the rake is formed of a linear elastic material, and the tip is inserted into the field to perform weeding. Things.

In the weeding machine described in Patent Document 1, by locating the rice field near the traveling body, the amount of right and left deflection of the rice field at the time of right and left meandering of the traveling body can be suppressed to a small value. Thus, it is possible to prevent the inconvenience of pushing down the seedling and damaging the planted seedling.

In addition, since the rake is formed of an elastic material, even if the rake contacts the seedling, the elasticity of the rake does not easily cause the seedling to be broken or pulled out, and two rakes are provided before and after. Thus, the weeding effect of the rake can be improved by one weeding run.

JP 2006-271340 A

However, in the weeding machine described in Patent Document 1, when the running body meanders left and right due to a change in the cultivation of a paddy field or the like, the weeding rotor swings largely left and right, and the seedling is pushed down by the weeding rotor and may be damaged. The present invention solves the problem described above, and has a characteristic in the position of the rice paddy and the arrangement of the rake, but does not enhance the weeding effect by the structural characteristics of the rake itself.

The present invention solves the above-mentioned conventional problems, and the structural characteristics of the weeding means directly related to weeding can enhance the herbicidal effect and prevent damage to the seedlings. An object of the present invention is to provide a weeding brush, a weeding attachment and a weeding machine including the same.

In order to achieve the above object, a weeding brush of the present invention is a weeding brush attached to a traveling body moving in a paddy field to perform weeding, and the weeding brush performs weeding by rotation. Elastic body, and a base for fixing the linear elastic body, wherein the plurality of linear elastic bodies extend elongated in the direction of the rotation center line of the rotation, and define a vertically long space. It is arranged so as to surround and forms a cage-shaped structure having an open end.

According to the weeding brush of the present invention, since the cage-shaped structure is formed, a relatively large number of linear elastic bodies can be easily arranged on the base, and at the time of weeding, the inclined weeding is performed. With the rotation of the brush, the tip is buried in the soil without interruption and the soil is scraped, so that the weeding effect can be enhanced.

In addition, the linear elastic body, in addition to being linear and elastic, is elongated, so it is easy to bend, and in the width direction of the weeding brush, regardless of the positional relationship between the weeding brush and the seedling, Damage to the seedlings during weeding can be prevented, and there is no concern about damage to the seedlings even if the running of the weeder sways left and right.

Further, the plurality of linear elastic bodies are elongated in the direction of the rotation center line of the weeding brush, and are arranged so as to surround the vertically long space, so that a distance between adjacent linear elastic bodies can be reduced. Since a wide interval can be maintained from to the tip, the grass is hardly entangled.

In the weeding brush of the present invention, it is preferable that the end portions of the plurality of linear elastic bodies are inclined toward the vertically long space. According to this configuration, when weeding is performed with the weeding brush inclined, the tip can be laid in the soil with the tip sideways, so that the scraping effect can be enhanced.

It is preferable that one linear elastic body is bent to form two linear elastic bodies. According to this configuration, the bent end portion can be used as a positioning member, and two linear elastic bodies can be positioned at a time, which facilitates manufacture.

The weeding attachment of the present invention is a weeding attachment provided with each of the weeding brushes of the present invention, and is configured to be replaceable with the traveling body, and the weeding machine of the present invention includes the weeding brushes of the present invention. A weeding machine provided with the weeding brush rotatably mounted on the traveling body.

The effects of the present invention are as described above. In summary, according to the weeding brush of the present invention, a relatively large number of linear elastic bodies can be easily arranged on the base, and the tip is interrupted during weeding. The soil is buried in the soil and the soil is lifted, so that the weeding effect can be enhanced.The linear elastic body is easy to bend, and the seedlings are damaged during weeding regardless of the positional relationship between the weeding brush and the seedlings. Can be prevented, and the distance between adjacent linear elastic bodies can be kept wide from the root to the tip, so that grass is hardly entangled.

The side view of the weeding machine concerning one embodiment of the present invention. The top view of the weeding machine shown in FIG. The expansion perspective view of the weeding brush concerning one embodiment of the present invention. The side view of the weeding brush shown in FIG. The side view which showed the weeding brush shown in FIG. 4 in the disassembled state. Sectional drawing in the AA line of FIG. The side view which shows the state in which the weeding machine which concerns on one Embodiment of this invention is weeding. The principal part enlarged view which shows a mode that weeding is carried out by the weeding brush which concerns on one Embodiment of this invention. The principal part enlarged view which looked at FIG. 7 from the arrow A direction. The figure which shows the state which the driving | running | working of the weeding machine which concerns on one Embodiment of this invention shifted to the left from the state of FIG. The side view of the weeding machine which shows the state which raised the weeding attachment which concerns on one Embodiment of this invention. The principal part enlarged view which shows the rocking | swiveling mechanism of the weeding brush which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a weeding machine 1 according to one embodiment of the present invention. This figure shows a state in which the weeder 1 is traveling in a flooded paddy field, and reference numeral 21 indicates a water surface. Seedlings 22 are planted in the paddy fields.

The weeding machine 1 is one in which a weeding attachment 3 is replaceably mounted on a traveling body 2. The traveling body 2 has a body body 4 to which a front wheel 5 and a rear wheel 6 are attached. In addition to an operator sitting on a seat 7 in addition to a steering 8, an operation panel (not shown), a shift lever, an operation pedal, etc. Operate to operate. In the present embodiment, the front wheel 5 side of the weeding machine 1 is called a front side, and the opposite side is called a rear side.

The weeding attachment 3 mainly includes the weeding brush 20, the weeding brush 30, and the support 10 of the weeding brush. The connection shaft 12 is connected to the engine 9 of the traveling body 2, and the rotation transmission shaft 13 is connected to the connection shaft 12. The rotation transmission shaft 13 has a hollow portion, and a telescopic shaft 14 having a hexagonal cross section is inserted.

(4) The connection shaft 12 is rotationally driven by the engine 9, and the rotation transmission shaft 13 and the telescopic shaft 14 rotate integrally therewith. By the rotation of the telescopic shaft 14, the drive system inside the support 10 is driven by a sprocket or a gear (bevel gear), and the power is transmitted to the rotary shaft inside the support 10 while changing the direction appropriately by the universal joint, so that the weeding brush 20 , 30 rotate. In addition, the expansion and contraction of the rod 17 provided in the hydraulic mechanism 16 drives the link mechanism 11 to move the weeding attachment 3 up and down, and the

weeding brushes

20 and 30 move up and down integrally therewith.

The traveling body 2 has the same structure as the traveling body used for the rice transplanter. The rice transplanter is equipped with components equivalent to the engine 9, the link mechanism 11, and the hydraulic mechanism 16. The rice transplanter can be used as a rotation drive source for the

weeding brushes

20, 30 by utilizing the engine 9, and the hydraulic mechanism 16 and the link are used. The mechanism 11 can be used as an elevating mechanism for the

weeding brushes

20, 30. For this reason, it is also possible to remove the attachment for rice transplanting provided in the rice transplanter, attach the weeding attachment 3, and convert the traveling machine of the rice transplanter to the traveling machine of the weeder.

FIG. 2 is a plan view of the weeder 1 shown in FIG. A plurality of weeding brushes 20 and 30 are mounted on the weeding attachment 3. The plurality of weeding brushes 20 and 30 are arranged in two rows before and after. The weeding brushes 20 form a weeding brush row on the front side, and the weeding brushes 30 form a weeding brush row on the rear side. In this embodiment, the reference numeral 20 is assigned to the weeding brush on the front row, and the reference numeral 30 is assigned to the weeding brush on the rear row. When the weeding machine 1 is moved straight while the weeding brushes 20 and 30 are rotated, the weeding brushes 20 and 30 are integrally moved along the shoots L1 to L5 integrally therewith. The grass in the strip 51 is sequentially weeded.

FIG. 3 is an enlarged perspective view of the weeding brush 20 shown in FIGS. 1 and 2, and FIG. 4 is a side view of the weeding brush 20. Although described with an example of the weeding brush 20, the weeding brush 30 has the same structure. In FIG. 3, the weeding brush 20 is configured such that a linear elastic body 43 is fixed to a base 49 composed of a pair of disc-shaped upper and

lower plates

40 and 41. A linear elastic body 43 is fixed to a support 42 arranged between the elastic member 43 and the support member 42. As shown in FIG. 4, the upper plate 40 and the lower plate 41 are fixed by bolts 45 and nuts 46 with a support 42 interposed therebetween.

As shown in FIGS. 3 and 4, the mounting cylinder 44 of the rotating shaft is fixed to the upper plate 40, and the rotating shaft (not shown) is inserted into the mounting cylinder 44 and the pin is driven into the pin hole 55. For example, the rotation shaft is fixed to the mounting cylinder 44. The weeding brush 20 rotates around the rotation shaft mounted on the mounting cylinder 44 of the rotation shaft. Reference numeral 53 in FIG. 4 indicates a rotation center line of this rotation.

FIG. 5 is a side view showing the weeding brush 20 shown in FIG. 4 in an exploded state. The linear elastic body 43 is obtained by bending a single spring material such as metal into a U-shape. The spring material is, for example, a piano wire, hard steel wire or stainless steel, and preferably has a diameter of about 2 mm to 4 mm. In the present embodiment, one weeding brush 20 includes four linear elastic bodies 43. As a result, the weeding brush 20 has eight striated bodies (four in FIG. 5) extending from the base 49.

FIG. 6 is a sectional view taken along line AA in FIG. As shown in the figure, a notch 47 is formed in the support tool 42. In FIG. 5, a support 42 is fixed to a lower plate 41, and upper ends of four linear elastic bodies 43 are engaged with notches 47 (see FIG. 6) of the support 42, respectively. By fixing the upper plate 40 and the lower plate 41 with the bolts 45 and the nuts 46, as shown in FIGS. 4 and 6, the linear elastic body 43 is formed between the support member 42 and the upper plate 40. In a state of being sandwiched therebetween, it is fixed integrally with the base 49.

4, as shown in FIG. 4, the plurality of linear elastic bodies 43 are elongated so as to extend in the direction of the rotation center line 53 of the weeding brush 20 and are arranged so as to surround the vertically long space 52. As a result, as shown in FIG. 3, the weeding brush 20 forms a cage-shaped structure having an open end. Reference numeral 48 denotes a tip portion of the linear elastic body 43. As will be described later, the tip portion 48 is buried in soil during weeding, and the grass 23 and the soil near the tip portion 48 are rotated with the rotation of the weeding brush 20. The root portion of the root is scraped (see FIG. 8).

Since the weeding brush 20 has the cage structure as described above, a relatively large number of linear elastic bodies 43 can be easily arranged on the base 49, and the inclination as shown in FIG. As the weeding brush 20 is rotated, the tip portion 48 is buried in the soil without interruption and the soil is scraped up, so that the weeding effect can be enhanced.

In addition, as described later, the linear elastic body 43 is easy to bend because the linear elastic body 43 is elongated in addition to being linear and elastic. Irrespective of the positional relationship of the seedlings 22, damage to the seedlings 22 during weeding can be prevented, and there is no concern about damage to the seedlings 22 even when the weeding machine 1 runs left and right.

Further, since the plurality of linear elastic bodies 43 are elongated in the direction of the rotation center line 53 of the weeding brush 20 and are arranged so as to surround the vertically long space 52, as shown in FIGS. 3 and 4. As described above, since the interval between the adjacent linear elastic bodies 43 can be kept wide from the root to the tip, grass is less likely to be entangled.

とおり As described above, weeding is performed by burying the tip 48 in soil during weeding (see FIG. 8). As shown in FIG. 4, the interval 54 on the distal end side of the adjacent linear elastic body 43 is larger than that on the root side. Thereby, when two of the tip portions 48 are buried in the soil at once, the interval between the two tip portions 48 can be widened, and the weeding range can be widened.

According to the disassembly structure of the weeding brush 20 as shown in FIG. 5, the upper plate 40 and the lower plate 40 are engaged with the linear elastic body 43 and the notch 47 (see FIG. 6) of the support tool 42. Since the assembly is completed by fixing the plate 41 with the bolts 45 and the nuts 46, the manufacture is easy and the disassembly is easy, so that the replacement of the linear elastic body 43 becomes easy.

In addition, since the linear elastic body 43 is bent in a U-shape, the positioning can be easily performed only by engaging the end portion with the notch 47 (see FIG. 6) of the support tool 42, and the linear elastic body 43 is formed once. The two linear elastic bodies 43 can be positioned at the same time, which also facilitates manufacture.

構造 The structure of the aforementioned weeding brush 20 may be appropriately changed. For example, the upper plate 40 and the lower plate 41 are not limited to a disk shape but may be a rectangular shape, and the base 49 may be formed of a single member. In addition, the linear elastic body 43 may be fixed to the base 49 one by one by omitting the U-shaped bending process, and the fixing method may be welding or the like. The number may be changed as appropriate.

Hereinafter, weeding by the weeder 1 will be described with reference to FIGS. 7 to 9. FIG. 7 is a side view showing a state during weeding, and corresponds to an enlarged view near the weeding attachment 3 in FIG. In this figure, the weeding machine 1 is moving forward in the row direction of the seedlings 22 (direction of arrow B), and the weeding brushes 20, 30 that are rotating together with this (direction of arrow C) are also moving forward. As a result, the grass 23 of the stump 50 and the grass 23 of the streak 51 (see FIG. 9) are sequentially removed. The weeding will be described more specifically with reference to FIGS.

FIG. 8 is an enlarged view of a main part showing how weeding is performed by the weeding brush 30. For the sake of convenience, the weeding brush 30 will be described with reference to an example in which the weeding brush 30 is rotated in the direction of the arrow D about the mounting cylinder 44. Further, although an example of the weeding brush 30 will be described, the same applies to the case of the weeding brush 20. In FIG. 8, the distal end portion 48 of the linear elastic body 43 is embedded in the ground. Due to the rotation of the weeding brush 30 (in the direction of arrow D), the distal end portion 48 rotates in a direction to float above the ground (in the direction of arrow E).

With this, the root portion of the grass 23 is scooped together with the soil near the tip portion 48, and the grass 23 is removed. By the rotation of the weeding brush 30, the distal ends 48 of the adjacent linear elastic bodies 43 are sequentially buried in the ground, and then float up from the ground. By repeating this, the grass 23 within the passing range of the weeding brush 30 is being weeded. In particular, in the present embodiment, the tip portion 48 is inclined toward the vertically long space 52 (see FIG. 4), and the tip portion 48 can be buried in the soil with the tip portion 48 in the horizontal direction, so that the scraping effect can be enhanced. it can. On the other hand, even if the inclined tip 48 is not provided, the scraping effect may be obtained by adjusting the inclination of the weeding brush 3, and the inclined tip 48 has an arbitrary configuration.

FIG. 9 is an enlarged view of a main part of FIG. 7 viewed from the direction of arrow A. For convenience of illustration, FIG. 9 shows the weeding brush 20 on the back side in a simplified manner, and the illustration of the weeding brushes 20 and 30 outside the gap 51 is omitted. The seedlings 22 in this figure correspond to the seedlings L2 and L3 shown in FIG. Looking at the shoot L2, a plurality of linear elastic bodies 43 of the weeding brush 30 overlap the seedling 22. Since the weeding brush 30 advances from the state of FIG. 9 while rotating (the back side of the paper), the grass 23 in the inter-stump 50 (see FIG. 7) is being weeded in the shoot L2. More specifically, in the shoot L2, the tip of the elastic body 43 of the weeding brush 30 rotates in a direction to lift the grass 23 together with the soil (arrow G1), and the grass 23 is being weeded. The same applies to the adjacent weeding brush 20 (not shown) (arrow G2), and the same applies to the shoot L3 (arrows G3, G4).

In FIG. 9, in the streak 51 between the shoot L2 and the shoot L3, the weeding brushes 20 are arranged at the center, and the weeding brushes 30 are arranged on both left and right sides. In addition, as shown in FIG. 2, there is also a space in which the weeding brush 30 is arranged in the center portion and the weeding brushes 20 are arranged on both left and right sides. Further, since the weeding brushes 20 at the center and the weeding brushes 30 at the left and right sides are arranged so as to be shifted in front and rear as shown in FIG. 2, the linear elastic bodies 43 do not interfere with each other. That is, the linear elastic bodies 43 are uniformly arranged in the strips 51 and rotate, so that the weeding brushes 20 and 30 rotate and move forward to generate buoyancy due to the resistance of the soil and thus weeding. The grass 23 of the streak 51 is being weeded while maintaining an appropriate angle in the depth direction of the soil between the brush 20 and the weeding brush 30.

On the other hand, the weeding machine 1 cannot always go straight along the shoots L1 to L5 (see FIG. 2), and the running of the weeding machine 1 may swing right and left. In this case, the positional relationship between the shoots L2 and L3 and the weeding brushes 20 and 30 shown in FIG. 9 also changes. FIG. 10 shows a state in which the traveling of the weeder 1 is shifted to the left (arrow F) from the state of FIG.

Even in the state of FIG. 10, the seedlings 22 of the shoot L2 and the weeding brush 30 overlap, and the seedlings 22 of the shoot L3 and the weeding brush 20 overlap each other. Grass 23) is being weeded. Also, in FIG. 10, similarly to FIG. 9, linear elastic bodies 43 are uniformly arranged in the spaces 51, and the grasses in the spaces 51 are rotated with the rotation and forward movement of the weeding brushes 20 and 30. 23 are being weeded.

Here, in FIG. 10, in the shoot L <b> 2, the seedling 22 and the central part of the weeding brush 30 overlap each other. In this positional relationship, the rotation of the weeding brush 30 causes the linear elastic body 43 to constantly cross the seedling 22, and there is a concern that the seedling 22 may be damaged. However, since the linear elastic body 43 of the weeding brush 30 is elongated in addition to being linear and elastic, it is easy to bend. For this reason, when the linear elastic body 43 that easily bends crosses the seedling 22 that bends more easily than the elasticity, the seedling temporarily bends, but is specially damaged after the weeding brush 30 passes. Restore to the original state without doing anything.

Therefore, even if the seedlings 22 and the central part of the weeding brush 30 overlap, the weeds 50 (see FIG. 7) can be weeded without damaging the seedlings 22. That is, by using the weeding brushes 20 and 30 according to the present embodiment, weeding can be performed without fear of damaging the seedlings 22 even if the positional relationship between the seedlings 22 and the weeding brushes 20 and 30 deviates from the initial reference. become. Therefore, if the front wheel 5 and the rear wheel 6 (see FIG. 1) are running in the strip 51 (see FIG. 1), even if the running of the weeder 1 swings right and left, the weeding machine 1 does not cause any problem. Weeding can be performed.

Further, as described above, the weeding brushes 20 and 30 are configured such that the space surrounded by the plurality of elastic bodies 43 is a vertically long space 52 (see FIGS. 3 and 4), and a plurality of elongated linear elastic bodies from the base 49. 43 is configured to extend in the direction of the rotation center axis of the weeding brush 20, so that the interval between the adjacent linear elastic bodies 43 can be kept wide from the root to the tip, so that the grass is entangled. It becomes difficult.

As described above, in FIG. 1, the link mechanism 11 is driven by the expansion and contraction of the rod 17 provided in the hydraulic mechanism 16 to move the weeding attachment 3 up and down, and the weeding brushes 20 and 30 are moved up and down integrally therewith. FIG. 11 is a side view of the weeding machine 1 showing a state where the weeding attachment 3 is raised (in the direction of the arrow H). In this state, it is possible to move the weeding machine 1 without weeding, and replacement of the weeding brushes 20 and 30 and various maintenances become easy.

FIG. 12 is an enlarged view of a main part showing a swing mechanism of the weeding brush 20. Although this drawing illustrates the vicinity of the weeding brush 20, the same applies to the vicinity of the weeding brush 30. The rotating shaft 32 is fixed to the mounting tube 44, and the rotating shaft 32 is in the connection tube 31 that does not rotate. Similarly, the rotating shaft 34 is in the connection cylinder 33 that does not rotate. The rotating shaft 34 and the rotating shaft 32 are connected by a universal joint 35, and the rotation of the rotating shaft 34 is transmitted to the inclined rotating shaft 32, and the weeding brush 20 rotates.

The connecting cylinder 31 is supported by a support 36, and the support 36 is supported by a support 37 with bolts (not shown) fastened to bolt holes 38. The bolt hole on the support 36 side is larger than the diameter of the bolt, and a bolt 39 is attached to the support 37. The bolt axis and the starting point of the universal joint 35 are collinear. According to this configuration, the support 36 and the weeding brush 20 integrated therewith can swing about the bolt hole 38, and the swing range is regulated by the bolt 39. Therefore, when the weeding machine 1 moves forward, the weeding brush 20 swings according to the buoyancy caused by the resistance of the soil (arrow J). That is, since the weeding brush 20 swings according to the state of the soil, the weeding effect is enhanced.

Although the embodiments of the present invention have been described above, these are merely examples and may be appropriately modified. For example, in the embodiment, the weeding brushes are arranged in two rows before and after the weeding brushes 20 and 30, but may be one row or three rows.

DESCRIPTION OF SYMBOLS 1 Weeding machine 2 Running body 3 Weeding machine attachment 10

Airframe

20, 30 Weeding brush 43 Linear elastic body 48 Tip part 49 Substrate 50 Between stocks 51 Strip 52 52 Vertical space

Claims

A weeding brush for weeding attached to a traveling aircraft moving a paddy field,
The weeding brush is for weeding by rotation,
A plurality of linear elastic bodies,
A base for fixing the linear elastic body,
The plurality of linear elastic bodies are elongated in the direction of the rotation center line of the rotation, and are arranged so as to surround a vertically long space, and form a cage-shaped structure having an open end. Characteristic weeding brush.
The weeding brush according to claim 1, wherein tips of the plurality of linear elastic bodies are inclined toward the vertically long space.
2. The weeding brush according to claim 1, wherein one linear elastic body is bent to form two linear elastic bodies.
A weeding attachment provided with the weeding brush according to any one of claims 1 to 3, wherein the weeding attachment is configured to be replaceable with the traveling body.
It is a weeding machine provided with the weeding brush according to any one of claims 1 to 3, wherein the weeding brush is rotatably mounted on the traveling body.