JPH0686402U - Earthen claw - Google Patents

Abstract

(57) [Summary] [Objective] The present invention aims to provide an earth shaving nail which is effective for removing a locally existing lump of soil such as vinyl retaining soil for vinyl cultivation. [Structure] In a pawl that is attached to a tilling device and rotates around a rotation center to perform plowing, a mounting base and a blade are connected by an arc to form a slender blade shape having a predetermined width in a plane perpendicular to the rotation center. Then, the blade body is formed to bend at an obtuse angle close to a right angle to the width direction at an arbitrary position of the portion connected by the circular arc, and the back portion and the blade portion of the portion are curved so as to substantially follow the radius of rotation. It was done.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pawl attached to a rotor of a cultivating device for cultivating, and more specifically to a soil digging nail suitable for removing soil covering in vinyl cultivation.

[0002]

[Prior art]

 Generally, a claw that is attached to the rotor of a cultivator and rotates around its rotation center to cultivate the soil connects the mounting base that is attached to the rotor and the blade that cuts into the soil with an arc, etc. A bent, so-called "knife" shape is used. The claws are attached to the rotor in a plurality of rows radially and symmetrically around the circumference, and are suitable for widespread farming by operating the tiller.

[0003]

[Problems to be solved by the device]

 However, in agricultural lands where vinyl (covering material) is often used as a heating device suitable for forcing and suppression cultivation, it is necessary to drive the plowing nails into the soil together with the vinyl without removing the vinyl. However, due to the cutting resistance of vinyl, the plowing device consumes a large amount of horsepower and causes vibration. Therefore, these vinyls would cause the above-mentioned problems unless they are removed gradually after harvesting.However, since these vinyls are usually held at the hem with the soil clods of the field, they are retained. After removing the clod, the vinyl will be removed. Since the work of removing the soil on the hem is local, at present, there is only the method that the worker can do it manually, using a hoe, etc., and there is a problem that it is extremely hard work.

In order to solve such a problem, the present invention is an earthen claw which can be easily attached to an ordinary tilling device or the like to remove local soil mass such as soil covering of the hem without heavy labor. Is intended to provide.

[0005]

[Means for Solving the Problems] The present invention relates to a pawl that is attached to a tilling device and rotates around a rotation center to perform plowing, and connects a mounting base and a blade with an arc to form a flat surface perpendicular to the rotation center. The blade body is formed into a shape having a predetermined width inside, and the blade body is formed at an arbitrary position of the portion connected by the arc so as to be bent at an obtuse angle close to a right angle with respect to the width direction. Is curved so as to substantially follow the radius of gyration.

[0006]

[Action]

 When the shaving claws are attached to the rotor of the cultivator so that they fit vertically and horizontally at the vinyl hem, and the cultivator is operated, the claws rotate with the rotation of the rotor. At the time of this rotation, the blade of the claw is curved so that it follows the radius of rotation, so it does not scratch or entangle the vinyl, tangentially dig into the soil at the hem, and scrape off only the soil mass. Scoop up and skip to the outside to remove.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. First, the configuration will be described with reference to FIGS.

In FIG. 1, an earth shaving claw (also simply referred to as a claw) 1 is formed as shown by a solid line. In the figure, the chain double-dashed line indicates the state before bending, that is, the developed state. The claw 1 is made of a steel plate having a plate thickness of several millimeters, and has a vertically rectangular mounting base 2 and a blade body 3 having a shape similar to a fuselage blade bent largely downward in the horizontal direction, with an inner arc 4 and an outer arc. Connected with 5. The claw 1 is formed so that the width of the mounting base 2 is B ₁ and the width of the tip of the blade 3 is B _{2 from this} width. The mounting base 2 is provided with a hole 7 for mounting on a holder (not shown) on the shaft 6 of the rotor, and is provided with hardness measurement points 8 and marks 9 and 10 as appropriate.

The blade body 3 is formed such that the side bent to the convex portion is a sharp blade portion 11 having a width of several mm (see FIG. 4), and the side bent to the concave portion is the back portion 12 having the plate thickness of the steel plate. To be done. The blade 3 is an obtuse angle α (for example, 94 °, see FIG. 2) which is close to a right angle with respect to the reference surface (lower surface) 2a of the mounting base 2 along a line (a polygonal line) A that connects appropriate points of the circular arc 4 and the circular arc 5. ). However, before this bending, it is better to form the blade body 3 in a curved shape so that the tip 13 thereof causes an offset S in the bending direction (see FIG. 3). Thus, as shown by the solid line in FIG. 1, the back portion 12 and the blade portion 11 of the bent blade body are curved and formed in a shape substantially along the radius of rotation R about the rotation center O. The thus-formed nail 1 is entirely tempered to have an appropriate hardness. If the claw 1 is a left claw, the right claw is formed symmetrically with this.

Next, the operation of the claw having the above structure will be described with reference to FIGS.

As shown in the view of the field in FIG. 5 from above, two rows of vinyl 14 have their bottoms 14 a covered with clods 16, and a case of removing the clods 16 will be described. As shown in FIG. 6 which is a cross section of the vertical line VI-VI in FIG. 5, the left pawl 1 and the right pawl 1'are attached to the shaft 6 of the rotor of the tiller (not shown) via the holder 17. The mounting relationship is such that the bent portion of the claw 1 is substantially aligned with the rising portion of the hem portion 14a of the vinyl 14 in the left-right direction and the vertical direction, and a plurality of these are radially arranged. In FIG. 6, 15 indicates a ridge after harvest, and 18 indicates a soil reference plane. When the cultivator is operated in this manner, as shown in FIG. 7, the rotor shaft 6 advances in the direction of arrow X and rotates in the direction of arrow Z. As a result, the nail 1 also moves in the same manner, and the blade body 3 cuts into the soil covering the vinyl hem 14a, that is, the soil mass 16 in which a large amount of the soil mass 16 has gathered. At this time, since the blade body 3 is formed in a shape along the radius of gyration, digging or shaving into the clod 16 is performed in the tangential direction, damaging the vinyl 15 or winding it. There is no such thing. Then, the cut soil mass 16 is scooped up so as to ride on the blade body 3 as shown in FIG. 8, and the blade body 3 is bent at an obtuse angle. It will be blown outward along the upper surface. Therefore, the soil (clad mass) 16 of the skirt portion 14a is collected in the central portion and removed from the top of the skirt portion 14a, as shown by the arrow W'in FIG. As a result, the vinyl retaining soil locally present can be removed without manual labor using a hoe or the like, and the vinyl 14 can be freely removed or removed. Therefore, after that, it becomes possible to cultivate easily using a normal plowing claw and in a state without vibration.

In the above description, the earth shaving nail of the present invention is used for removing vinyl covering soil, but the present invention is not limited to this. For example, it is also used for earth shaving of locally hard topsoil. It is possible.

[0013]

[Effect of device]

 As described above, according to the present invention, the locally existing clods such as the vinyl skirt restraining soil can be easily scraped off and removed without heavy labor and removed.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention showing a projection view and a development view (two-dot chain line) on a plane perpendicular to a rotation center.

FIG. 2 is a view on arrow II in FIG. 1 (a view as seen from the direction of the broken line A).

FIG. 3 is a view showing a developed view (two-dot chain line) of FIG. 1 along arrow III (two-dot chain line) and an offset curved state (solid line).

FIG. 4 is a view on arrow IV of (two-dot chain line) in FIG. 1.

FIG. 5 is a top view of a field grown by vinyl cultivation.

FIG. 6 is a view showing a sectional view taken along the line VI-VI in FIG. 5 with a mounting usage diagram of the earth shaving claw of the present invention added.

FIG. 7 is a view on arrow VII of FIG.

FIG. 8 is a view on arrow VIII in FIG.

[Explanation of symbols]

1 Scraping Claw (Claw) 2 Mounting Base 3 Blade 4 Arc (Inside) 5 Arc (Outside) 6 Rotor Shaft 11 Blade 12 Back 13 Back 14 Tip 14 Vinyl 14a Vinyl Hem 15 Clod 16 Clod 17 Holder 18 Soil Reference Surface A polygonal line B ₁ , B ₂ width S offset R turning radius O turning center

Claims (1)

[Scope of utility model registration request] 1. A claw which is attached to a cultivator and rotates around a rotation center to cultivate, and is formed into a shape having a predetermined width in a plane perpendicular to the rotation center by connecting an attachment base and a blade with an arc. Then, the blade body is formed to bend at an obtuse angle close to a right angle to the width direction at an arbitrary position of the portion connected by the circular arc, and the back portion and the blade portion of the portion are curved so as to substantially follow the radius of rotation. The earth shaving nail that is characterized.