ES2244285A1 - Circular harvester for e.g. grass has circular protrusion having two sections arranged over motor pulley and two guidance pulleys - Google Patents

Abstract

A circular protrusion is formed between a motor pulley and two guidance pulleys about which is tightened a steel band having teeth that may have any appropriate configuration. The protrusion is protected by a circular tube and is arranged between a frame and a pin. The protrusion has two sections that are arranged over the pulleys.The circular reaper, designed for reaping long grasses, cereals and other similar plants, includes a circular saw (1) which runs between a driving pulley (5) on one end and another two pulleys (6) and (7) on the opposite end, as guide and tension pulleys for the circular saw (1), this consisting of a band of very flexible steel with the corresponding serrations (2), which can have any appropriate configuration. The reaper also includes a frame (4) corresponding to a fixed comb, between the teeth (3) of which runs longitudinally the circular saw (1), which at the same time is protected by a tube (10) determining the two longitudinal sections of the circular saw (1) since the end sections are the ones positioned on the pulleys (5), (6) and (7).

Description

Circular mower.

Object of the invention

The present invention relates to a mower circular, intended to mow certain types of plants such as they can be tall grasses or fodder, alfalfa, cereals, etc., without discard its use in the harvest of other foreign plants.

The object of the invention is to provide a circular mower that is intended to be dragged into its operation by a vehicle, be it a tractor, a combine, etc, and perform a circular motion of its corresponding saw, from a driving pulley, in combination with the blades of a fixed and rectilinear comb.

Background of the invention

The mowers used for cutting herbs, cereals and other types of plants, usually present as fundamental elements, a fixed and transverse bar provided with a plurality of triangular or trapezoidal blades, and by on top of it a second mobile bar equipped with a movement alternative, with other blades analogous to those previously referred, so that each blade fixed with its corresponding mobile blade determines a kind of scissors suitable for cutting the grass.

That is, conventional mowers have a fixed knife comb and other mobile comb, also knife complementary so that the swinging movement to the side and another of the latter with respect to the previous one carries the sectioning of herbs or plants that, in vertical arrangement, are placed between the teeth of the two combs and therefore between the blades located at the bottom of those teeth.

Although circular saws are known for the iron or wood cutting in workshops and sawmills, the applicant does not currently know grass mowers and other plants that are based on the concept of what a saw is circular.

Description of the invention

The machine that is recommended is based on The cutting system comprises two fundamental elements, a comb fixed with their corresponding blades and trajectory rectilinear, and a saw materialized by a very steel band flexible, closed on itself, with one of its serrated edges, of such that said saw in its assembly on a pair of pulleys, one drive and one guide, and optionally another tensioner, performs the cutting of the grass in combination with the fixed comb, which acts as a sufridera, getting a clean mowing at high speeds without requiring positioning the grass before carrying out the Cut as with the classic rotary mowers.

Through the referred cutting system, once the herb or plant in question has been sectioned, it is not necessary separate the cut grass, preventing the release of small stones, splinters, earth or any other object that is found on the ground, at the time of mowing, as with rotary mowers, which is an important risk to anyone near the mower working.

As it was said, by the circular mower of the invention avoids those problems and inconveniences, as well as the sometimes sectioning the herbs in several cuts, as with the rotary mowers, with the consequent waste of those small portions that are sectioned, which is solved with the circular mower of the invention where the fixed comb spikes what they do is remove the cut grass keeping the cutting area

For the rest, as is conventional, the whole of the fixed comb, belonging to a frame, is equipped with some skates that are those that rest on the ground during drag of the mower by any motor vehicle, which prevents deterioration of the spikes and of course the passing circular saw on these spikes, in its path as endless belt, so the wear is concentrated on the skates. The spikes of the fixed comb and the circular cutting sieve, parts or components these, can be Easily substituted and replaced.

Finally, it should be noted that, optionally, the Comb can be endowed with a reciprocating movement, or on average moon, instead of being fixed, without affecting the essence of the invention.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as an integral part of said description, a set of drawings where with character Illustrative and not limiting, the following has been represented:

Figure 1.- Shows a plan view schematic of the circular mower made in accordance with the object of the invention.

Figure 2.- Shows a corresponding detail to section A-B of the previous figure.

Figure 3.- Shows a perspective view of What is the circular saw as a mower cutter object of the invention.

Figure 4.- Shows one of the possible and multiple applications of the mower, in this case linked to in the back of a tractor vehicle used as an element drive and drag of the mower itself.

Figure 5.- Shows, finally, a perspective of the movement of the spikes corresponding to the comb permanent.

Preferred Embodiment of the Invention

In view of the figures outlined, you can Observe how the circular mower of the invention comprises a circular saw (1) with its corresponding teeth (2), which can have multiple types of profiles, so that said saw circular (1) must be complemented with a fixed barbed comb (3) which is part of a rectilinear frame (4). At the end of said frame (4) is mounted a pulley (5) as a driving element for the circular saw (1), and at the opposite end a pulley of guided (6) and another tension pulley (7), complementing this with a slide (9) through which the displacement of that pulley (7) and therefore tension in greater or the circular saw (1) is smaller, since it runs between the drive pulley (5) and the two commented pulleys (6) and (7), passing a section of that through the spikes (3) of the corresponding comb to the frame (4), and the other section running through the inside of a tube (10) as a protective element thereof.

On the frame (4) are also arranged about skates (11) for support and sliding along the ground for protection of the frame itself (4), the spikes (3) being mounted on the frame (4) and related to elements (12) that provide movement to these spikes (3) with respect to the frame. Specifically those elements (12) are plates articulated by their extremes, allowing you to take full advantage of the performance of own spikes (3), cutting the grass and backing down with barely interrupt.

According to these characteristics, when the drive pulley (5) rotates, from a transmission of an element such as a tractor vehicle (13), as represented in figure 4, the rotation of the circular saw (1) and therefore the displacement of the teeth (2) of that saw (1) with respect to the spikes (3) of the fixed comb, making said spikes (3) the function of positioning herbs or plants to be cleanly cut by the teeth (2) of the circular saw (1), whereby such spikes or fixed comb act as a runner on the which supports the grass or plant, while the circular saw (1) Perform sectioning.

The mower can make a clean cut to high speeds, since you don't need to position the grass before make the cut, as with rotary mowers conventional, not requiring any means that have to separate the grass, which is also necessary in mowers rotary in which, once the grass is cut, it is required to set aside this one for its passage between the corresponding cutting discs, which It involves considerable effort.

In addition, under the features and design of the aforementioned circular mower, the replacement of the parts that are may wear or deteriorate, such as skates (11), spikes (3) and the circular saw itself (1), can be done easily, simple and very fast, and can also cite the advantage which means not throwing stones or other small objects of the soil, which does occur with rotary mowers, occurring in these sometimes the stones deteriorate the blades, with what the cut is not very clean, which does not happen with the mower of the invention, since the cut is clean in the absence of throwing or hitting with stones or objects located on the ground.

Finally, say that the circular cutting saw (1) as one of the fundamental elements of the mower of the invention, is constituted by a serrated band of steel very flexible, in order to run between the drive pulley (5) and the guide pulleys (6) and tensioner (7).

Claims (5)

1. Circular mower, which is intended for mowing tall grass, alfalfa, cereals and other similar, is characterized in that it comprises a circular and flexible saw (1) and a fixed comb with spikes (3), a comb that is part of a frame (4) at whose ends a driving pulley (5) and two extreme pulleys (6) and (7) are mounted between which the circular saw itself (1) runs, so that the axial displacement of this, in combination With the spikes (3), make the cut of the grass without orienting it or removing it after cutting. 2. Circular mower, according to claim 1, characterized in that the teeth (2) of the circular saw (1) can have different configurations. 3. Circular mower, according to claim 1, characterized in that the circular saw (1) has a section that runs between the spikes (3) of the comb corresponding to the fixed frame (4), while another section runs in a protected manner through the interior of a tube (10). 4. Circular mower, according to claim 1, characterized in that the pulleys (6) and (7) provided at one of the ends determine a guiding and tensioning means, respectively, for the circular saw itself (1), the pulley being tensioning (7) associated with a slide (9) to move it and achieve tensioning of the circular saw itself (1). 5. Circular mower, according to previous claims, characterized in that in its operation it is driven by means of a driving machine capable of constituting the means of driving it.