JP3523776B2 - Agricultural ground scraper device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraper device for ground wheels for agricultural work. Agricultural work here means transplanting vegetables and the like, plowing work in fields, work to suppress topsoil in fields, etc.
The term "ground wheel" refers to a wheel (tire, roller, etc.) that comes into contact with the ground and rotates or is forcibly driven by being slightly immersed in the ground.

[0002]

2. Description of the Related Art A ground rolling roller for farming that rolls on the ground, for example, when a leveling roller (height detecting roller) in a vegetable transplanter is rolled on a field (ridge), the rolling surface of the leveling roller is The soil adheres. For this reason, as shown in FIG. 18, the scraper tool (in the vicinity of the rolling surface (B1) of the roller (B) which is rotatably supported by the bifurcated wheel support tool (A). C) is provided so that the soil attached to the rolling surface (B1) can be stripped off by the scraper tool (C).

[0003]

The conventional scraper tool (C) is formed of a plate-shaped body and has its edge (C1).
By bringing the rolling surface (B1) close to the rolling surface (B1)
Had peeled off the soil. However, since the scraper tool (C) is a plate-shaped body, the peeled soil may stay on the plate-shaped body, and when the stopped soil (D) remains as it is, it grows like snow dharma, The roller (B) could not roll anymore, and the leveling function and the detection function could not be maintained.

In particular, when the field is clayey or soft soil, there is a large tendency to form the snow dharma shape.
Furthermore, in the work form, there are cases where it is desired to continue the work even if the work starts at fine weather and there is rainfall, snowfall, etc.
At this time, the growth of the snow dharma-like adhered soil was large.

Further, for example, when the planting work is carried out for two days, the soil adhered to the roller (B) remains solidified in the work on the first day, and the work on the second day is a fine weather work. However, there was a significant possibility that the snow would immediately grow like snow dharma. Further, the conventional scraper tool (C) rarely scrapes the soil adhered to the both side surfaces (B2) of the roller, and when the soil adheres and solidifies on this side surface, the roller (B) cannot roll and the field field. When the roller (B) is a leveling roller, the leveling function is no longer present and a depression is formed in the field, which is rather harmful.

Therefore, in the present invention, by adopting a thin metal rod material (a solid material or a pipe material may be used) as the scraper tool, the peeled soil is dropped onto the ground after being peeled off without being retained on the scraper tool. The purpose of this is to ensure that the growth of snow dharma-like soil can be prevented. Another object of the present invention is to ensure that the soil can be peeled off not only on the rolling surface of the ground wheel (roller, tire) but also on the left and right side surfaces thereof.

[0007]

The present invention takes the following technical means in order to achieve the above-mentioned object in a scraper device for peeling off soil adhered to an anti-ground wheel for agricultural work rolling on the ground. That is, the present invention according to claim 1 is directed to a first scrape portion which is close to a rolling surface of the ground wheel body and extends transversely in the axial direction, and a first scrape portion which is close to both side surfaces of the ground wheel body and has a ring body diameter. It is characterized in that a substantially U-shaped scraper tool having left and right second scrape portions extending in the direction is constituted by a thin metal rod.

By adopting such a construction, the soil (including the mixture of grass, straws and the like, which is the same hereinafter) adhered to the rolling surface in the first scrape portion is applied to both side surfaces in the second scrape portion. Since the adhered soil is peeled off and both parts are made of thin metal rods, the soil is not stopped and is prevented from falling quickly into a so-called snow dharma shape.

Further, when the agricultural work is sandy land (including silty material), gravel, fine stones, etc. are prevented from being caught in the first and second scrape portions. Although it is possible to use a thin resin string or the like as the scraper tool, since it is cut early, it is advantageous to use a thin metal rod material in terms of durability and wearability to the wheel body. The thin metal rod may be a solid material, a pipe material, a circular cross section, an elliptical shape, or a square shape (including a strip plate), and preferably a piano wire having a circular cross section, a PC steel wire, or a hard steel. It is recommended that lines, etc., have a small area for soil retention and have good soil slippage and durability.

According to the present invention of claim 2,
In addition to the above-mentioned claim 1, the first scraper portion of the scraper tool is located on the rear side in the rolling direction of the ground wheel and on a plane that horizontally crosses the rolling center or below the plane. It is characterized by that. By adopting such a configuration, the soil separated in the first scraper portion will not be reattached to the rolling surface of the wheel body, will be dropped directly on the ground, and will not rotate the soil. It was.

Further, in the present invention according to claim 3,
In addition to the above-described claim 1 or 2, the first scrape portion that is close to the rolling surface of the ground wheel and the second scrape portion that is close to both side surfaces of the ground wheel have the first clearance to the wheel body. The scrape portion is small and the second scrape portion is large. By adopting such a configuration, even if the ground ring is slightly immersed in the ground (ridges, fields) and rolls (whether rotation or forced drive is possible), the scraping action on the rolling surface and both side surfaces is reliable. Moreover, it becomes possible to surely drop the soil or the like quickly from the clearance of the second scrape portion.

According to the present invention of claim 4,
In addition to the above-mentioned configurations of claims 1 to 3, the ground wheel is rotatably provided on a bifurcated wheel support, and one end of the left and right scrape parts is a wheel body. It is characterized in that one end of the support tool and the other end of the support tool are attached to the ground side surface of the ring support tool with their positions displaced in the radial direction.

By adopting such a structure, the scraper tool is subjected to a load (external force) due to the scraping action.
Is not twisted or disengaged even when
Due to the elastic restoring force of the scraper tool
・ 2 The scraped part can be reliably returned and the attached soil can be wiped off by the elastic restoring force. Further, in the invention according to claim 5, in addition to the configurations of claims 1 to 4 described above, the first scraping portion of the scraper tool gradually performs a scraping action on the rolling surface of the ground wheel. It is characterized in that it is arranged diagonally as much as possible.

By adopting such a construction, the peeling action does not act at once on the entire rolling surface of the first scrape portion, but gradually acts, so that the load due to the peeling action is reduced. The separated soil can be gradually discharged to one side. In addition, in the above-mentioned claims 1 to 5, the ground wheel is a front wheel of a vegetable transplanter, a front gauge wheel or a rear gauge wheel of a rotary cultivator, a wheat stepping roller, a smooth surface roller of a topsoil pressure roller, a gauge wheel such as a subsoiler. However, the most advantageous ones are the leveling roller (detection roller) and soil cover roller of the vegetable transplanter, and the spray pad is a piano wire having a wire diameter of 2.0 to 3.5 mm. After a number of experiments, it has proved to be advantageous.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a ground roller 1 exemplified by a leveling roller 1A of a vegetable transplanter, and FIG. 2 also shows a ground roller 1 exemplified by a soil-covering roller (squeezing roller) 1B.
Shows the ridges (ground) formed in the field.
Is what rolls around.

The ground roller 1 represented by the leveling roller 1A is shown in FIG.
And as shown in FIGS. 3 to 7, the circular side plates 3 are fitted in the openings on both sides of the cylindrical body 2 made of metal or hard resin, and the centers of the left and right circular side plates 3 (center of the ring body). On axle 4
Is rotatably supported on both ends of the axle 4 via bearings 5, and both sides of the axle 4 are provided with two shaft support members 6.
It is also attached to the shaped portion 6A.

The outer peripheral surface of the cylindrical body 2 is formed as a smooth rolling surface 2A, and by moving in the direction of the arrow F in FIG. 3, the ground wheel body 1 has its rolling surface 2A on the ground (GL). It makes contact (including a slight immersion) and rolls around the axle 4 as indicated by arrow R. A first scrape portion 7A that extends in the vicinity of the rolling surface 2A of the ground wheel body 1 and extends in the axial direction, and a second left and right that extends in the radial direction of the wheel body in close proximity to both side surfaces 3A of the ground body 1 A substantially U-shaped (including a gutter-shaped) sprayer tool 7 having a scraped portion 7B has a wire diameter of 2.0 to 3.
It is composed of thin metal rods such as 5 mm piano wire, PC steel wire, and hard steel wire.

Although the metal rod is advantageous in that it has a circular cross section in terms of manufacturing, it may have a rectangular cross section, a strip shape, an ellipse or the like, and a solid bar or a hollow bar (pipe). Alternatively, the outer surface may be subjected to antirust treatment such as coating with a resin film such as Teflon. In the embodiment shown in FIGS. 3 and 4, the first scrape portion 7A
The clearance t1 between the rolling surface 2A and the rolling surface 2A is about 1 mm to 2 mm, and the clearance t2 between the left and right second scrape portions 7B and the side surface 3A is about 2 to 3 mm. Since t1 <t2, the soil attached to the rolling surface 2A is peeled off at the first scrape portion 7A, and sand, fine stones, etc. are prevented from being bitten into the gap t1, and the gap t2 is larger than t1. By increasing the size, the soil separated in the second scrape portion 7B is prevented from immediately falling and growing.

Further, as shown in FIG. 4, the end portions of the left and right second scrape portions 7B are radially inwardly extended in parallel with the second scrape portion 7B via a step portion 7C extending outward in the horizontal direction. A hook portion 7D having a U-shaped end is attached to the forked portion 6A by a fastener 8 shown by a bolt. In this case, when the engaging groove 6B is formed in the bifurcated portion 6A and the step portion 7C is engaged in the engaging groove 6B to scrape the soil attached to the ground wheel body 1 rolling in the arrow R direction. The locking groove 6B prevents the scraper tool 7 from rotating due to the resistance (load).

When the hook portion 7D is detachably attached to the forked portion 6A through the step portion 7C by the fastener 8, a large clearance t3 is formed at the rolling center of the ground wheel body 1 (the axle 4 portion). By forming it, even if soil or the like enters the rolling center portion, it is prevented from staying at the clearance t3, and also in the rolling center portion, the soil or the like grows like snow dharma. It is preventing it.

Further, in the embodiment of FIGS. 3 and 4, the first and second scraping portions 7A and 7B of the scraping tool 7 are planes on the rear side in the rolling direction of the ground wheel body 1 and horizontally across the rolling center. Is located on the plane XX, and in particular, the first scrape portion 7A is located on the plane XX,
As shown in FIG. 3 (2), when the peeled soil moves like arrow G and falls, it is prevented from reattaching to the rolling surface 2A located below the first scrape portion 7A. ,
By arranging the first scrape portion 7A below the plane XX as shown in FIG. 5, it is advantageous in that the reattachment of the separated soil can be prevented more reliably.

Further, the first scrape portion 7A (the same applies to the second scrape portion 7B) is brought close to the rolling contact surface 2A at the clearance t1 and is made of a thin metal rod, so that the structure shown in FIG. As shown in the figure, the stationary soil D passing through the gap t1 and trying to adhere to and grow on the first scraped portion 7A has a small amount and easily falls like arrow E, which prevents snow dharma-like growth. On the other hand, in the conventional example, as shown in FIG. 3 (3), since the stationary soil D was a plate-shaped scraper tool C, the amount of the stationary soil D increased and the snow Dharma-like adhered shape was formed. This is prevented by the present invention.

The scraper tool 7 is shown in FIGS.
As shown in Fig. 6, it is advantageous to have it on the rear side in the rolling direction because it has a scraping action immediately after leaving the ground GL and the soil is less likely to be carried around. The tool 7 may be provided on the front side in the rolling direction and below the plane XX. Further, as shown in FIG. 7, two scraper tools 7 may be provided below the plane XX on the rear side in the rolling direction so as to perform a so-called two-step scraping operation.
It is preferable to use one scraper tool 7 as shown in FIGS. 3 (1) and 5, because the soil adhesion opportunity of two steps is received rather than the step of scraping.

5 to 7, only the mounting position of the scraper tool 7 and the like are different from those in FIGS. 3 and 4, and the other configurations are the same as the above-described configurations and operations, and therefore common parts are common. It is indicated by a symbol. 2 and 8 to 1
3 shows an embodiment provided with the sprayer tool 7 having the above-described structure and operation for the ground wheel body 1 exemplified by the soil covering roller (compressing roller) 1B of the vegetable transplanter.

The soil-covering roller 1B is, as shown in FIG.
The soil on both the left and right sides of the seedling H planted in the ridges GL is pressed to prevent the seedling H from collapsing and to improve the survival property. For this purpose, the rolling surface 11 of the wheel body 10 made of metal, hard resin, or the like is in the shape of a mounting circle inclined to one side in the axle direction, and is freely rollable on the axle 12 via the bearing 13. Supported by.

Further, the opening of the large-diameter portion of the ring 10 is closed by a disc 14 having a recess 14A in the center thereof, and the disc 14 has a fastener 15 whose outer periphery is indicated by a bolt.
It is attached to the side surface of the wheel body 10. The axle 12 is tilted as shown in FIG. 11 and is mounted on the transplanter via the bracket 16, and the rolling surface 11 presses the soil on both sides of the seedling H to cover (compress) the soil. There is.

The first scraper portion 7A of the scraper tool 7 made of a thin metal rod material (piano wire, hard steel wire, etc.) having a wire diameter of about 2.0 to 3.5 mm is 1 to 3 mm on the rolling surface 11.
The second scraper portion 7B has a clearance t2 of about 2 to 5 mm on both sides of the wheel body 10 and is extended in the radial direction. The end portions of the axle 12 are detachably attached to the bracket 16 by the hook portions 7D at both ends thereof.

The scraper tool 7 is a hook 7D on the free end side which is an inner side when the pair of right and left soil-covering rollers 1B are mounted.
Is fastened to the end face of the axle 12 by a fastener 8 shown by a bolt, while the outer free end hook 7D is provided.
As shown in FIG. 10, the hook has an elongated hook shape in the front-rear direction, and is fastened to the bracket (ring body support) 16 by fasteners 8 indicated by bolts at the front and rear two positions. As the parts are shifted in phase in the radial direction as shown in FIG. 10, even if an external load acts on the scraper tool 7, the scraper tool 7 is prevented from being accidentally detached.

Further, by forming the outer hook portion 7D in the shape of a long hook in the front-rear direction and engaging it with the two (or more than two) fasteners 8, the first scraper portion 7A has a clearance. The adjustment of t1 is possible, and such adjustment can be performed from the outside, which facilitates the adjustment work. Further, although the hook portion 7D, which is long in the front-rear direction, is provided on the outer side to facilitate the adjustment work described above, the curved portion 7DI of the hook portion 7D is set to the working direction (forward direction) F as shown in FIG. This not only prevents grass, straw, soil, etc. from getting entangled in the hook portion 7D, but also prevents the above entanglement by further positioning the outer engaging portion above the inner engaging portion. -ing

The inner hook portion 7D is the disk 14
It can be engaged with the fastener 8 through the hole 14B formed in the center of the disc, and as shown in FIG. 8, the extending portion 7E of the inner second scrape portion 7B has a cross-sectional shape of the disc 14. By bending it along the shape, it is possible not only to prevent entanglement of grass, straw, and the like with respect to the stretched portion 7E, but also to scrape soil or the like that tends to adhere to the outer surface of the disk 14.

Further, the first scraping portion 7A is arranged obliquely so as to gradually scrape the rolling surface 11, whereby the scraping force (scraping load) is once applied to the first scraping portion 7A. Since it does not act on the gradual action, it not only prevents the accidental detachment of the engaging portions (the left and right hook portions 7D) together with the elastic deformation of the first scrape portion 7A, but also removes the peeled soil in the axial direction. It has an advantage in removing soil.

When the soil peeled off by the first scrape portion 7A is discharged in the axial direction, it is desirable to discharge the soil outward in the axial direction (on the side without the seedling H). Further, disposing the first scrape portion 7A obliquely with respect to the rolling surface can also be adopted for the leveling roller 1A shown in FIGS. 1 and 3 to 7. Furthermore, when the first scraping portion 7A is arranged obliquely with respect to the rolling surface, the clearance t1 with the rolling surface is on the scrape leading side (the portion to be scraped first).
It is desirable to decrease the clearance t1 and gradually increase the clearance t1 toward the rear side of the scrape.

14 to 17 exemplify an agricultural working machine to which a rolling wheel having the scraper tool having the above-described structure is applied. 14 and 15 show an example applied to a riding-type vegetable transplanting machine 20. The transplanting machine 20 has a two-axle four-wheel type traveling vehicle 22 having a driving and manipulating device 21 and a transplanting device 23 by a link mounting body 24. It is mounted so that it can be raised and lowered freely.

The transplanting device 23 is provided with a seedling placing table 25, a planting claw 26 for taking out the seedling on the seedling placing table 25 and planting it in the ridge GL. Two
6 has soil cover rollers 1B on the rear left and right,
A and 1B are provided with the scraper tool having the above-described configuration and action. FIG. 16 is an example applied to a walk-behind vegetable transplanter, in which left and right guide wheels (front wheels) 28 are provided in front of the left and right drive wheels 27, the vehicle height is adjustable, and between the left and right drive wheels 27. A detection roller 1A for height control (which may be horizontal control) that rolls on the ridge GL is biased to the ridge GL by a spring 29, and behind this is a take-out tool 31 on the front of the seedling placing table 30.
And feed it to the planting claw 32 that moves up and down.
The seedlings are transplanted on the ridges GL at predetermined intervals, and both sides of the seedlings are crushed by the left and right soil-covering rollers 1B provided behind the planting claws 32. It is equipped with a scraper tool that acts.

In both the riding type and the walking type, when the ridge GF is ground by the roller 1A prior to the planting claw, the soil to be attached and grown on the rolling surface and both side surfaces of the roller 1A is scraper tool. As mentioned above, the seedlings are surely peeled off and do not become snow dharma-like, so the seedlings are planted in a correct posture under a predetermined depth, and the left and right soil-covering rollers 1B are set on both sides of the seedlings to collapse the seedlings Because it improves the vitality
At this time, the scraper tool operates as described above.

Since the front wheel 28 shown in FIG. 16 is usually a rib tire (a tire having a tread surface as a rib), the scraper tool 7 having the above-described structure and action can be adopted at this time. FIG. 17 shows a case where the front gauge wheel 34 or the rear gauge wheel 35 of the rotary cultivator 33 mounted on the rear side of the tractor adopts the scraper tool 7 having the configuration and operation shown in FIGS. 1 and 3 to 7. .

Note that the application example of the present invention is not limited to the agricultural working machine shown in FIGS. 14 to 17, and is also applied to, for example, a wheat trampling roller, a smoothing roller as a soil soil compactor, a gauge wheel such as a subsoiler, and the like. It is possible, and the roller (ground wheel) may be forcibly driven (rotated), or when the rolling surface of the rolling wheel has an hourglass shape (concave roller), this rolling It may have a first scrape portion so as to be adjacent to the surface in parallel.

[0038]

As described above in detail, according to the present invention, it is possible to reliably prevent the soil and the like from adhering and growing in the snow dharma shape on the ground ring during agricultural work.

[Brief description of drawings]

FIG. 1 is a perspective view in which the present invention is applied to a leveling roller of a vegetable transplanter.

FIG. 2 is a perspective view in which the present invention is applied to a soil cover roller of a vegetable transplanter.

3 (1) is a side view of FIG. 1, (2) is an action diagram,
(3) is an operation diagram of a conventional example.

4 is a cross-sectional view of FIG.

FIG. 5 is a side view showing another first modification of FIG. 3 (1).

FIG. 6 is a side view showing another second modification of FIG. 3 (1).

FIG. 7 is a side view showing another third modified example of FIG. 3 (1).

8 is a cross-sectional view of FIG.

9 is a cross-sectional view of FIG.

FIG. 10 is a side view of FIG.

11 is a mounting view of the soil cover roller of FIG. 2. FIG.

FIG. 12 is a cross-sectional view showing another example of FIG.

13 is a cross-sectional view of FIG.

FIG. 14 is an overall side view of a riding-type vegetable transplanting machine to which the present invention has been applied.

FIG. 15 is a side view of the main part of FIG.

FIG. 16 is an overall side view of a walk-behind vegetable transplanter to which the present invention has been applied.

FIG. 17 is a side view of a rotary cultivator to which the present invention has been applied.

FIG. 18 is a perspective view of a conventional example.

[Explanation of symbols]

1 rolling wheel 2A rolling surface 3 both sides 6 wheel support 7 scraper tools 7A 1st scraped part 7B 2nd scraped part

─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Kenta Takechi 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Plant (56) Reference JP-A-7-303406 (JP, A) 186611 (JP, U) Actual development 57-100841 (JP, U) Actual development 1-107602 (JP, U) Actual development 60-149911 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01C 11/00-11/02 303 A01C 13/00 A01B 29/00-29/06

Claims (6)

(57) [Claims] 1. A scraper device for removing soil attached to a ground wheel for agricultural work rolling on the ground, comprising: a first scrape portion that is adjacent to a rolling surface of the ground wheel and extends transversely in an axial direction. , A substantially U-shaped scraper tool having left and right second scrape portions that are adjacent to both side surfaces of the ground wheel body and extend in the wheel radial direction, and is configured by a thin metal rod member. The end of the second scraping part of the above is engaged with the wheel support by shifting the position in the radial direction of the wheel against ground, respectively. 2. The first scraper portion of the scraper tool is located on the rear side in the rolling direction of the ground wheel and on a plane that horizontally traverses the rolling center or below the plane. The scraper device for a ground wheel body for agricultural work according to claim 1. 3. The first scrape portion, which is close to the rolling surface of the ground wheel, and the second scrape portion, which is close to both side surfaces of the ground wheel, have a small gap between the wheel body and a second scrape portion. The scraper device for an agricultural ground wheel according to claim 1 or 2, wherein the scrape portion is enlarged. 4. The ground wheel is rotatably mounted on a bifurcated wheel support, and the ends of the left and right second scrape parts are attached to one side of the wheel support. The scraper device for an agricultural ground wheel according to any one of claims 1 to 3, wherein the other end is attached to the other side surface of the wheel support. 5. The first scrape portion of the scraper tool comprises:
5. It is arranged obliquely so as to gradually scrape the rolling surface of the ground wheel body.
A scraper device for an anti-ground wheel for agricultural work according to any one of 1. 6. The ground roller is a grounding roller or a soil covering roller of a vegetable transplanter, and the scraper tool has a wire diameter of 2.0 to 3.
The scraper device for an anti-ground wheel for agricultural work according to any one of claims 1 to 5, wherein the scraper device is composed of a piano wire of 5 mm.