RU28800U1 - Manual frame hoe - Google Patents

Description

MANUAL FRAME HOUSING

The utility model relates to agricultural machinery, in particular to hand tools, and can be used for weeding and loosening the earth.

For manual weeding of small land plots, traditional motpi (choppers) are used, in which, when working, a plate pointed from the edge with a blow is immersed in the soil. Plane cutters are used in which plates of various shapes pointed from the edge with the help of a long handle move their plane parallel to the surface of the earth, cutting off the roots of plants. Used frame motp and, in which the cutting part is made in the form of a thin metal tape, mounted between the supports. Using a long handle, the cutting tape moves back and forth across the ground or underground, shaving off plants or cutting roots and loosening the soil. Depending on the type of soil and vegetation, one of these types of hoes is chosen for work.

The proposed utility model relates to frame hoes. The closest to the claimed device is a manual motor according to the patent of the Russian Federation No. 2038711, publ. 07/09/95 (prototype), made in the form of a rectangular frame, the upper part of which is connected to the handle, and the blade in the form of the lower and side parts of the frame has a sharpening along the outer contour on both sides. The upper part of the frame is made in the form of a U-shaped bracket, at the opposite ends of which there are two cylindrical pins protruding inward. The rest of the frame is made in the form of a U-shaped blade with holes at the ends and mounted on the pins of the upper base. The ends of the blade have bevels. The blade is made of bimetal to ensure self-sharpening.

Its advantages include light weight and dimensions, simplicity of design, ease of working with it, and high quality soil treatment.

The main disadvantage of the hoe is the need to use powerful and high-precision equipment for its mass production. This does not give the opportunity to raise motivation in small enterprises and determines the high cost of the product.

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The aim of the invention is to simplify the manufacturing technology of a hoe while maintaining the essential technical advantages of the known device.

This goal is achieved by the fact that in a manual hoe made in the form of a rectangular frame, the upper part of which is connected to the handle, and the lower and sides are made in the form of a sharpened blade on both sides, the rectangular frame is made of folding and consists of two parts, the first of which represents the upper base in the form of a rectangular plate, the middle portion of which is rotated at an angle to the edge planes of the plate, plates are attached to the ends of the plate, forming gaps between the plane of the base and the plates , and the second part is completely in the form of a U-shaped blade, the end sections of which are bent at right angles and placed in slots at the ends of the base.

The implementation of manual motpi in the form of a collapsible design simplifies the technology of manufacturing motpi and makes it easy to replace a worn blade.

The handle is made of two identical half-cylinders, welded from opposite sides to the curved middle part of the base. This design is easy to manufacture, provides the necessary angle between the axis of the handle and the plane of the horizontal part of the blade. The longitudinal section of the handle provides the convenience of inserting the hoe handle, and the half-cylinders are pulled together by a tightening ring.

The use of bending the ends of the blade instead of punching the holes and trimming the bevels, as in the prototype, eliminates the use of presses and their wearing precise equipment. Bending with the same performance can be done with a hand tool.

The attachment of the plates at the ends of the base for the formation of cracks can be done), for example, by welding. This avoids the use of powerful hydraulic presses and their precise wearing equipment for bending the ends of thick plates and punching precise holes in them. No need to use

YG D / - wire for pins. The entire product is made of sheet metal. In this way, cheaper manufacturing of the proposed engine is achieved and in comparison with the prototype.

The use of slots instead of a round hole limits the swing angle of the blade, which makes the work of the proposed motpa when moving away from oneself less convenient. But the experience of operating the framework motives shows that the work is usually carried out by the movement “to oneself, because it tires less. 11 tires. In this case, the claimed product is not inferior to the prototype and surpasses the model with a rigidly fixed blade.

To satisfy the need for periodic sharpening, the blade is made of hardened steel. At the same time, in the sharpened part of the blade, one plane is sharpened, the non-sharpened plane of the blade is framed, facing the ground or up and on it in the zone adjacent to it; to it to the edge of the edge, a pattern is formed of narrow zones of increased hardness located along 1 phive lines. It can be complete; worn with hardening with help; with a laser beam.

The curved motion of the beam, for example, along a cycloid or sinusoid, provides a speed of the beam close to the raviomeric, and, therefore, a constant depth of the hardened zone. In the place of a strong decrease in the speed of the beam, for example, during rectilinear movement at the moment of changing direction to the opposite, deep hardening is formed, which leads to the formation of rattles1; otherwise, and the blade breaks when it is bent.

The drawing shows the proposed mot.

The manual frame moto consists of an upper base 1 in the form of a rectangular plate with a curved section 2, on which a handle 3 with a tightening ring 4 is fixed. The blade 5 is available; its sharpened side 6 and a pattern of narrow hardened zones of curvilinear shape 7 on the non-sharpened side blades, has bent ends 8 inserted into w; spruce between base 1 and plates 9.

Work with motpa is as follows.

With the help of a long handle inserted into the hoe’s handle, the worker drives the tool blade along the soil surface or at some depth below the surface, cutting off the stems or roots of plants and loosening the soil.

Blades were made and tested from steel 65G with a thickness of 1.5 mm with the side to be tacked up and up and down to the ground with a pattern of narrow hardened zones in the form of a sinusoid on the unstable side. Tests confirmed the effect of self-sharpening of the blade and better cutting properties when the non-stable side of the blade is turned “to the ground, as shown in the drawing.

Claims (4)

1. A manual frame hoe, including a working body in the form of a rectangular frame, the base of which is connected to the handle, and the blade in the form of the lower and side parts of the frame of hardened steel has a sharpening along the external contour on both sides, characterized in that the base is made in the form of a rectangular plates, the middle portion of which is rotated at an angle to the edge planes of the plate, plates are attached to the ends of the plate, forming gaps between the plane of the base and the plates, and the ends of the side parts of the frame are bent at right angles and placed in slots at the ends of the base. 2. The manual hoe according to claim 1, characterized in that the handle consists of two halves attached from different sides to the curved middle part of the base, and has a tightening ring. 3. A hoe according to claims 1 and 2, characterized in that one plane is sharpened in the sharpened part of the blade, while the non-sharpened plane of the blade faces the ground or up. 4. A hoe according to claims 1 to 3, characterized in that a pattern of narrow zones of increased hardness located along curved lines is formed on an unstable blade plane in an area adjacent to the edge tip.