Harvest head having a device to remove grains from the plants to be harvested and a device to transfer the grains to a feeder and to a discharge tube

Abstract

A harvest head having a device to remove grains from plants to be harvested and a device to transfer harvested grains to a feeder and to a discharge tube. The harvest head having a support structure; a threshing comb; a first conveyor belt; a second conveyor belt, the threshing comb transfers the grains into the first and the second conveyor belts. The first and the second conveyor belts are convergent. A transverse conveyor belt is located between the first conveyor belt and the second conveyor belt. A reinforcement arranged on the back and the front cover and projecting out of the harvest head. The first and the second convergent conveyor belts carry the grain to the transverse conveyor belt, the transverse conveyor belt introduce the grains into a feeder that ends in a discharge tube. The convergent conveyor belts and the transverse conveyor belt are bands made of composite resins.

Claims

1. A harvest head having a device to remove grains from plants to be harvested and a device to transfer harvested grains to a feeder and to a discharge tube, the harvest head comprising: a support structure having a base, a back wall, a back cover, a front cover, and lateral fingers; a threshing comb mounted on an axis on which the threshing comb rotates, pulling the grains off a stem; a first conveyor belt; a second conveyor belt, the threshing comb transfers the grains into the first and the second conveyor belts, the first and the second conveyor belts are convergent; a transverse conveyor belt, the transverse conveyor belt is located between the first conveyor belt and the send conveyor belt, the transverse conveyor belt is arranged transversely to the first conveyor belt and to the second conveyor belt; a reinforcement arranged on the back and the front cover and projecting out of the harvest head; wherein the first and the second convergent conveyor belts carry the grain to the transverse conveyor belt, the transverse conveyor belt introduces the grains into a feeder that ends in a discharge tube; wherein the transverse conveyor belt has a plurality of projections arranged perpendicular to the advance direction thereof; and wherein the convergent conveyor belts and the transverse conveyor belt are bands made of composite resin, wherein the base, the back wall, the back cover, the front cover, the lateral fingers, and the feeder are made of composite resin.

2. The harvest head in accordance with claim 1, wherein the reinforcement is made of composite resin.

3. The harvest head according to claim 1, the convergent conveyor belts, the transverse conveyor belt, the base, the back wall, the back cover, the front cover, the lateral fingers, and the feeder are made of carbon fiber.

Description

FIGURES

(1) In what follows, various schematic figures are accompanied that allow a better understanding of the matter that is revealed. The accompanying figures have been schematized in variable scales where:

(2) FIG. 1 schematizes a partial perspective view of the head that is disclosed.

(3) FIG. 2 schematizes a partial perspective view of the head object of the present invention, in which the previous cover has been removed, allowing the two convergent conveyor belts to be observed, the conveyor belt transverse to them, the feeder, and the comb.

(4) FIG. 3 schematizes a side view, partial, in perspective and in section where the comb is observed as well as the axis on which it is mounted. The axis on which one of the two converging conveyor belts and the two covers rotates are also observed.

(5) FIG. 4 is a partial perspective side view of the inside of the head where the comb, the convergent conveyor belts, and the transverse conveyor belt are observed. This figure also shows one of the rollers between which the transverse conveyor belt moves, as well as one of the rollers between which one of the converging conveyor belts moves. And you can also see the back wall, as well as the back cover and the front cover.

REFERENCES

(6) In the figures described, the same characters represent equal or complementary parts.

(7) It is clarified that in the subsequent description, the reference numbers are put between hyphens the first time they are used and in parentheses in the subsequent opportunities. In this way it is easier to follow the development of the wording since any reference between hyphens designates a part not previously described.

(8) Thus, reference number -1- has been reserved to designate a base; reference number -2- to designate a back wall; reference number -3- to designate a back cover; reference number -4- to designate a front cover; reference number -5- to designate a point; reference number -6- to designate a comb; reference number -7- to designate an axis; reference number -8- to designate a grain; reference number -9- to designate a convergent conveyor belt; reference number -10- to designate a transverse conveyor belt; reference number -11- to designate a feeder; reference number -12- to designate a projection and reference number -13- to designate a reinforcement.

(9) The arrows indicate the direction of movement.

FUNCTIONING

(10) In order to obtain a harvest head of less weight to facilitate its assembly, decrease the weight that supports the front axle of the harvester, reduce fuel consumption, and soil compaction and that can be mounted on equipment such as tool carriers, an integrated structure is provided with a base -1-, a back wall -2-, a back cover -3-, a front cover -4- and two lateral fingers -5- that close the sides completing this structure.

(11) At the front there is a comb -6- mounted on an axis -7- on which it can rotate so that it removes the grains -8- from the stem, driving them so that they end up falling on the convergent conveyor belts -9-.

(12) Said grains (8) are thrown by the comb (6) bouncing off the underside of the back (3) and front (4) covers to fall on the convergent conveyor belts (9) that take them to a transverse conveyor belt -10- on which they fall.

(13) This transverse conveyor belt (10) is continued inside a feeder -11- that ends in a discharge tube.

(14) In a preferred embodiment, the convergent conveyor belts (9) carry the grain (8) to the transverse conveyor belt (10) that has a plurality of projections -12- arranged perpendicular to the direction of advance thereof. The grain (8) then remains between shoulders (12) and is carried upwards, passing from the feeder (11) to the discharge tube and from this to the box of a truck or to a silo.

(15) In order to reduce the weight of the head, as we have said, the endless screw has been replaced by conveyor belts.

(16) In order to give an idea of the incidence of weight on conventional heads and the one proposed here, it will suffice to state that a conventional head weighs between 3,500 and 3,900 kg against 730 kg for a head with similar features, as disclosed in the present documentation. Some 130 kg could be added to this value, corresponding to the weight of the hydraulic oil necessary for operation, even when this input is normally included in the machine.

(17) This reduction in weight allows the use of a lower power drive plant while increasing the working speed.

(18) The possibility of replacing the conventional harvester with a tool carrier decreases the compaction of the soils.

(19) On the other hand, the decrease in weight allows the transfer speed to be increased and, therefore, the harvest speed. The inventors know that the harvest speed of a harvester equipped with a conventional head is in the order of 4.5 km/h, while the same harvester equipped with the head proposed in the present documentation will reach a harvest speed that will be in the order of 12.5 km/h.

(20) In a preferred embodiment, the convergent conveyor belts (9) and the transverse conveyor belt (10) are belts formed in composites where their ends are joined by a pin. This allows for placement and replacement in a minimum of time.

(21) Also, in order to reduce the weight, various parts of the head are made of composites. Thus, in some of said composite resins, the base (1), the back wall (2), the back cover (3), the front cover (4), the points (5) and the feeder (11) are formed.

(22) Also, in some of said composite resins, the reinforcement -13- that is arranged on the back (3) and front (4) covers is projected into the head.

(23) In this way, a preferred way of carrying out the invention has been described and illustrated, admitting the same variants that are not limiting thereof.

(24) The claims follow below.

(25) In what follows, a scope is attached where the novel matter of the described invention is established; matter that is claimed as exclusive property.