RU189490U1 - Working body of a manual cultivator - Google Patents

Abstract

The utility model relates to the field of agriculture, namely to the working bodies of manual cultivators, equipped with tines and used for tillage by the bottomless method with simultaneous removal of weeds. The device comprises a rod base (1) and peripheral teeth (2) and central teeth (3) fixed at the end of the base (1). The peripheral teeth (2) diverge in the direction transverse relative to the axis of the base (1), then they pass around the axis to form a spatial rotational body oriented longitudinally to the axis of the base (1). Moreover, the peripheral teeth (2) are twisted in a spiral in one direction. The central teeth (3) are located coaxially inside the body of rotation formed by the peripheral teeth (2). In this case, the ends of the central teeth (3) protrude with respect to the ends of the peripheral teeth (2) in the direction longitudinal with respect to the axis of the base (1). The technical result is an increase in the productivity of soil loosening when working on viscous and wet soils. 7 hp f-ly, 3 ill.

Description

Technical field

The utility model relates to the field of agriculture, namely to the working bodies of manual cultivators with teeth, used for tillage by the bottomless method (loosening without turning the layer of earth) with simultaneous removal of weeds.

The level of technology

The prior art widely known design of the working body of the cultivator, including a rod base and a number of curved teeth, fixed at the end of the base, diverging in a direction transverse to the axis of the base and then passing around it to form a cylindrical spiral (see, for example, RF patent RU2153787, 10.08 .2000).

When using a cultivator with the described working body that has helical teeth, on light soils with low humidity problems with loosening practically do not arise. However, when moving to heavier and more viscous soils with higher moisture, soil gets stuck in the teeth, which makes work much more difficult. This phenomenon is explained by the fact that the spiral teeth work like a corkscrew, and when they are inserted into viscous moist soil around the circumference, there is no complete lateral damage, since the inner part of the reservoir remains intact. Therefore, it is necessary to constantly expend additional efforts by removing the clod of earth from the reservoir and shaking it off with a sharp movement. As a result, the loosening performance of the tool is significantly reduced as it stops working properly.

The closest analogue of the claimed utility model is the working body of the cultivator, disclosed in the RF patent for useful model RU151534, 04/10/2015. The known device includes a rod base, on the end of which the L-shaped peripheral teeth are fixed and the straight central teeth located coaxially peripheral. Peripheral teeth diverge in a direction transverse relative to the axis of the base and then pass around this axis to form a spatial body of rotation in the form of a cylinder oriented longitudinally to the base axis. The length of the central teeth in the axial direction corresponds to the length of the peripheral teeth.

This closest analogue partially solves the problem described above through the use of central teeth, which extend the ability of the tool to work on viscous and wet soils.

However, the length of the central teeth in this design does not allow them to provide tool alignment and soil loosening to the entire height of the working body. In addition, the L-shaped shape of the peripheral teeth does not provide a sufficiently effective introduction of the tool into the soil. All this reduces the usability, ergonomics and productive work of the tool.

Disclosure of the essence of the utility model

The task of the utility model, which determines the technical problem, is to eliminate the shortcomings of the analogs and develop a working body for a manual cultivator for more efficient use in viscous and moist soils.

The technical result of the utility model is to increase the productivity of loosening the soil when working on viscous and wet soils.

This technical result is achieved in the claimed utility model due to the fact that the working body of the manual cultivator contains a rod base and peripheral teeth fixed at the end of the base and central teeth. Peripheral teeth diverge in a direction transverse relative to the axis of the base and then pass around this axis to form a spatial body of rotation oriented longitudinally to the axis of the base. The central teeth are located coaxially within the spatial body of rotation formed by the peripheral teeth. In this case, the peripheral teeth are twisted in a spiral in one direction, and the ends of the central teeth protrude with respect to the ends of the peripheral teeth in the direction longitudinal with respect to the axis of the base.

In addition, to achieve a technical result, private options for implementing a utility model are provided, according to which:

- the central teeth can be made straight and symmetrically inclined relative to the axis of the base;

- the central teeth can be inclined relative to the axis of the base at an angle of 1-30 °;

- the working body may contain at least three peripheral teeth and at least two central teeth;

- central and peripheral teeth can be made pointed;

- the base can be made in the form of a tubular element;

- the base may be a transition sleeve for attachment to the body of a manual cultivator;

- the base may be a manual cultivator body.

Unlike the closest analogue in the claimed working body, the central teeth have a greater length along the axis of the base than the peripheral teeth. This allows the use of central teeth to center the tool and loosen the soil to its full height, even under working conditions in viscous and wet soils.
The use of helical peripheral teeth facilitates the introduction of the tool into the soil. Thus, all the described features of the utility model are aimed at achieving the specified technical result.

The above particular forms of implementation of the utility model are also aimed at improving the productivity of soil loosening with a cultivator. However, they are not the only possible embodiments of the design. Moreover, this technical result can be achieved without the use of these additional features.

Brief Description of the Drawings

The utility model is illustrated by drawings, where:

The figure 1 shows a front view of the working body of the cultivator;

The figure 2 shows a side view of the working body of the cultivator;

The figure 3 shows the bottom view of the working body of the cultivator.

Implementation of the utility model

The stated working body of the cultivator contains a rod base (1), mounted on the end of the base (1) peripheral (external) teeth (2) and central (internal) teeth (3).

Peripheral teeth (2) diverge from the base in a direction transverse to the axis of the base (1) and then pass around it to form a spatial body of rotation in the form of a cylinder or bell. At the same time, the peripheral teeth (2) are twisted around the axis of the base into a spatial multiple spiral cylindrical helix oriented longitudinally to the axis of the base. The working body preferably contains at least three peripheral teeth (2), evenly distributed (symmetrically) around the base (1)

The central teeth (3) are located coaxially inside the body of rotation formed by the peripheral teeth (2). In this case, the ends of the central teeth (3) protrude with respect to the ends of the peripheral teeth in the longitudinal direction relative to the axis of the base (1).

The central teeth (3) are preferably straight and inclined with respect to the axis of the base (1), in particular 1-30 °. Moreover, these teeth (3) are inclined to the axis symmetrically. This allows the best alignment of the tool when loosening, and the specified angle of inclination is the most optimal from the point of view of destruction of the central part of the soil volume to be captured. However, it is possible to perform the central teeth (3) with a slight bend, other angle of inclination or without it.

The working body preferably contains at least two central teeth (3), distributed evenly (symmetrically) around the base (1)

Peripheral (2) and central (3) teeth, preferably, are pointed at the ends, which provides improved loosening of the soil due to its piercing.

The base (1) can be made in the form of a tubular element, round, square, rectangular or other section. The base, preferably, is a transition sleeve for attachment to the body of a manual cultivator. In another embodiment of the utility model, the base (1) may be directly the body of a manual cultivator. The base (1) and teeth (2,3) can be made of a metallic material, in particular steel. In this case, the teeth (2,3) can be connected to the end of the base by welding, soldering or in any other way.

The work of a manual cultivator is carried out cyclically and includes three phases:

- initial position,

- rotation with penetration into the soil (downward movement)

- continuation of rotation with raising up.

In the first phase, the working body is set to its original position vertically by the teeth down onto the treatment area. The central teeth partly enter the soil, while the peripheral teeth only touch its surface.

In the second phase, the working body is rotated using the tool handle. Peripheral helical teeth pierce the soil, partially destroy it and ensure the depth of the tool. In this case, the peripheral helical teeth work as a cylindrical multiple-use corkscrew, separating the processed part of the soil from the total mass of the reservoir. With their ends, the central teeth are ahead of the peripheral teeth, ensure the alignment of the working body and, when rotated relative to the axis of the base, destroy the formed bond of soil particles inside the treated cylinder in the soil, along the entire height.

In the third phase, the working body continues to rotate in the same direction and changes the vertical motion vector, moving upwards. In this case, the role of the central teeth becomes more passive, while the peripheral ones continue their activity, finally destroy the cylinder walls, hook and remove the roots of weeds to the surface, passing through the thickness of the soil, and return to their original position.

Claims (8)

1. The working body of the manual cultivator, containing a stem base (1) and fixed at the end of the base (1) peripheral teeth (2) and central teeth (3), with the peripheral teeth (2) diverging in the transverse direction relative to the axis of the base (1) and then they pass around this axis with the formation of a spatial rotation body oriented longitudinally to the base axis (1), and the central teeth (3) are located coaxially inside the spatial rotation body formed by peripheral teeth (2), characterized in that the peripheral teeth ci (2) are twisted spirally in one direction, the ends of the central teeth (3) protrude towards the peripheral ends of the teeth (2) in the longitudinal axis relative to the base (1) direction. 2. The working body according to claim 1, characterized in that the central teeth (3) are made straight and are symmetrically inclined relative to the axis of the base (1). 3. The working body according to claim 2, characterized in that the central teeth (3) are inclined relative to the axis of the base at an angle of 1-30 °. 4. The working body according to claim 1, characterized in that it contains at least three peripheral teeth (2) and at least two central teeth (3). 5. The working body according to claim 1, characterized in that the central (3) and peripheral (2) teeth are made pointed. 6. The working body according to claim 1, characterized in that the base (1) is made in the form of a tubular element. 7. The working body according to claim 6, characterized in that the base (1) is a transition sleeve for attachment to the body of a manual cultivator. 8. The working body according to claim 6, characterized in that the base (1) is a body of a manual cultivator.

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