Sealing system for an axial harvester feeder module

Abstract

The present invention relates to the creation of a grain feeder module (32, 32a or 32b), whereby the said module is constructed using concave segments (1, 2 and 3), which form a cylinder (8) and can be assembled and disassembled, guaranteeing serviceability and the said assembly allows the product to be sealed, by means of specific seals (9, 10, 11 and 21), so that impurities resulting from harvesting do not accumulate inside the cylinder.

Description

[0001] SEALING SYSTEM FOR AXIAL HARVESTER FEEDER MODULE TECHNICAL FIELD

[0002]

[0001] The following descriptive report for the invention refers to the creation of a grain feeder module, where said module is constructed from concave segments forming the cylinder, capable of being assembled and disassembled ensuring serviceability, and said assembly allows for watertightness of the product, through specific seals, so that impurities resulting from the harvest do not accumulate inside the cylinder, as currently happens.

[0003] STATE OF THE TECHNIQUE

[0004]

[0002] Axial rotor harvesters are machines in which the flow of threshed material follows the threshing cylinder (axial), which is mounted longitudinally on the machine body. Since feeding occurs from the front, the mechanisms are driven from the rear. The feeding system of axial harvesters, from the cutting platform, passes through the feeder, which has a system of chains and crossbars. The transverse feed module consists of a series of blades on the outside for feeding the main rotor.

[0005]

[0003] It is important to note that the function of the feeder module in a grain harvester is to convey material from the chain conveyor, which is composed of chains and crossbars, to the beginning of the industrial system, the rotor (preventing the formation of a dead triangle in this region). The feeder module consists of bars or teeth that surround the cylinder and its main function is to ensure a more homogeneous feed to the rotor, as well as to prevent threshing in this area to prevent damage to the grains, which arrive in this way in homogeneous layers. From the rotor entrance, the threshing process begins in the first part of the rotor. At this stage, the threshed grains already pass to the cleaning system through the concaves. The already threshed material that has not yet detached from the straw in the threshing area continues to the separation region of the rotor.Next, it enters the separation area, where it is separated and passes through grates to the cleaning system, along with straw and chaff. The feeder module is an important component for grain harvesting, as it influences the quality of the harvested grain, machine performance, and fuel consumption.

[0006]

[0004] In any axial machine manufacturer, one or more axial rotors perform the threshing operation in the front part (approximately 1 / 3), and in the remainder, grain and straw separation is carried out. The cleaning system consists of air blower and sieve systems, where the blower originates from a shaft with blades driven by a mechanical or hydraulic system that rotate around this shaft. This movement generates an air displacement, where the geometry of the structure directs the air to blow on the sieve system so that the fine straw that falls with the grain from the threshing system is blown away, avoiding falling with the clean grain on the sieves.

[0007]

[0005] The John Deere feeder module (cylinder), mounted on axial machines, is equipped with a series of radially arranged straight blades, that is, mounted transversely, the original arrangement or in the rice arrangement. These two models, in terms of constructive form and serviceability, are interchangeable, that is, the producer can exchange the standard blade systems for rice blades according to the machine model (for example, John Deere S400, S600, S700) and vice versa, as they are composed of 5 concave covers that are welded to form the feeder module, which can have straight blades radially or transversely, mounted on flanges and shaft.

[0008] TECHNIQUE PROBLEMS

[0009]

[0006] During use of the grain harvester, the feeder module, composed of welded concave segments, presents a problem with the accumulation of impurities inside it, due to the openings in its construction. These impurities gain access to the interior of the cylinder through the openings and clearances from the covers and through the sides of the cylinder. This can be seen in Figures 01 and 02, which correspond to the state of the art.

[0010]

[0007] These impurities generate vibrations in the harvester cabin due to imbalance caused by this non-uniform solid mass and, if not cleaned correctly, it is prone to fire, as this dry mass is close to the heat-generating bearings during harvesting.

[0011] PROPOSED SOLUTION

[0012]

[0008] Thus, due to the considerations pertinent to the problems of the technique previously pointed out, it is one of the objectives of the present invention to develop a feeder module that does not present the current problems of allowing the entry of impurities into it.

[0013]

[0009] The proposed feeder module is constructed from concavely curved plates to form a cylinder. In this construction system, these concave plates are joined together by screws, allowing for easy assembly and disassembly of the cylinder, unlike welded assembly, which does not allow for disassembly, as in the case of BR202021011209-9.

[0014]

[0010] To ensure that impurities do not enter the joint region of each of the concave plates, sealing methods were developed. Three preferred sealing methods are exemplified, which can be used independently or independently. These seals were developed to enable the construction of a sealed cylinder that is only bolted together, without the need for welding between the parts or even the need to use a tube as an axis in its structural part.

[0015] DESCRIPTION

[0016]

[0011] The characterization of the present invention is made by means of representative drawings of the sealing system for the feeder module applied to axial harvesters, in such a way that the product can be fully reproduced using an appropriate technique, allowing full characterization of the functionality of the object claimed.

[0017]

[0012] Based on the figures drawn up that express the best or preferred way of producing the product now envisioned, the descriptive part of the report is based on detailed and consecutive numbering, which clarifies aspects that may be implied by the representation adopted, in order to clearly determine the protection now intended.

[0018]

[0013] These figures are merely illustrative and may present variations, as long as they do not deviate from what was initially requested.

[0014] In this case, it is necessary:

[0019] - FIGURE 01 shows an exploded perspective of the feeder module belonging to the state of the art (John Deere - S680 Combine);

[0020] - FIGURE 02 shows an assembled perspective of the John Deere - S680 Combine feeder module for the rice system;

[0021] - FIGURE 03 shows the cylinder composed of three curved plates joined together by fasteners, for example, screws;

[0022] - FIGURE 04 shows three sealing possibilities (A, B and

[0023] C) of the curved plates forming the cylinder;

[0024] - FIGURE 05 shows the cylinder structure in its front view and without the curved plates;

[0025] - FIGURE 06 shows the assembly of the side seals of the cylinder structure, through a drawer mechanism;

[0026] - FIGURE 07 shows four moments of the assembly of the curved plates that form the cylinder component of the proposed feeder module;

[0027] - FIGURE 08 shows the cylinder assembled from the curved plates, containing the metal inserts that make up the P11107417-5 system;

[0028] - FIGURE 09 shows the cylinder assembled from the curved plates, containing the metal inserts for rice; - FIGURE 10 shows the cylinder assembled from the curved plates, containing the hybrid metal inserts, as per P11107417-5 and knife-type blades in the central part; and

[0029] - FIGURE 11 shows details of the blade and razor attachments.

[0030]

[0015] The proposed invention employs three curved metal sheets (1, 2 and 3) which, when joined by the joining lines (4, 5 and 6), using fasteners, for example, screws (7), form a hollow cylinder (8).

[0031]

[0016] The joining lines (4, 5 and 6) present closing elements that can preferably be a sealing by joining with an O' Ring channel (9), a 45° chamfer sealing by means of a band (10) and an overlapping joint in stamped sheet metal (11), so as to form the hollow cylinder (8) perfectly watertight on the side surface.

[0032]

[0017] The cylinder (8) formed by curved metal sheets (1, 2 and 3) has an internal structure configured by external flanges (12 and 13), internal flanges (14, 15 and 16) and the shaft (17), with both ends closed by circular covers (18 and 19).

[0033]

[0018] The circular covers (18 and 19) have openings (20) through which drawers (21) slide, forming a two-part sealing system, where said drawers (21) employ a set of strips (22 and 23) providing watertight closure of the cylinder (8) at its ends, with reversibility for maintenance and cleaning.

[0019] It is important to note that the power supply module (32a) is completely dismountable by removing the drawers (21), covers (18 and 19) and curved metal plates (1, 2 and 3).

[0034]

[0020] The curved metal sheets (1, 2 and 3) are shaped to receive a set of knives (24) that are fixed to the side surface of the cylinder (8) by means of fasteners such as screws and nuts (25 and 26). Another option is for the cylinder (8) to receive a set of blades (27), also fixed by means of screws and nuts (28 and 29) in metal inserts (30) welded to the side surface of said cylinder (8). Also, another option is the combination of the knives (24) with the blades (27), forming the hybrid system.

[0035]

[0021] With this construction it is possible to assemble the fully sealed beater module, eliminating the need for a tube (schedule or mechanical) whether with or without a seam.

[0036]

[0022] Some axial machines have a feed cylinder or input cylinder and a rear cylinder or output cylinder, which, after leaving the threshing system, passes through this cylinder before reaching the straw chopper / spreader. This cylinder has the same problem as the front cylinder already mentioned, and the proposal of this patent is to act on both the feed and output cylinders. However, both the feed and output cylinders have the same flange and shaft system (fig. 03), changing only the plates (1, 2, and 3). By removing these plates (1, 2, and 3), the situation shown in figure 03 arises, where there is the structure of the beater module, the external flanges (12 and 13), the internal flanges (14, 15, and 16), and the shaft (17). The tube (31) made up of plates and embedded inserts will be attached with screws to this original machine structure, forming the beater module or feeding module (32, 32a or 32b).

[0037]

[0023] At the ends of the tube (31), a two-part sealing system was developed, which has a drawer system (21) and screw fastening, in order to eliminate the entry of impurities through the ends, enabling lateral sealing without the use of welds with the concave parts. In this way, it is possible to assemble the new sealed system without the need to disassemble the machine shaft. This seal is composed of a non-flammable and / or flame-retardant material.

[0038]

[0024] After assembling the side seals (18 and 21), the concave plates and embedded inserts will be assembled. This system allows the removal of the original covers and installation of the sealing system without the need to disassemble the feeder (putter) from the machine.

[0039]

[0025] As regards the output or rear cylinder, it may be composed of concave plates (1, 2 and 3) and embedded inserts (30) for a hybrid system, which has knives (24) and knife-type blades (27) in the central part, avoiding overloading the machine's original chopping system.

[0040]

[0026] The features that highlight the proposed invention are the feeder modules with a sealing system to eliminate the accumulation of dirt in the center of the cylinders, avoiding imbalance generated over time of use of the harvester; the improvement in serviceability, ensuring the replacement of the module without the need to remove the nozzle, and safety, where the accumulation of dry matter inside the cylinders, if not cleaned, can generate the beginning of a fire and for the subsequent or output modules, a hybrid system with knife-type blades, helping to chop straw and avoid overloading the machine's original chopper.

Claims

CLAIMS: 1 - SEALING SYSTEM, which comprises the use of three curved metal sheets (1, 2 and 3) to form a cylinder, where said cylinder is characterized by: a) - said curved metal sheets (1, 2 and 3) being joined by the joining lines (4, 5 and 6), through fasteners, such as screws (7), in order to form the hollow cylinder (8); b) - said joining lines (4, 5 and 6) have closing elements that can be, preferably, sealing by union with O' Ring channel (9), 45° chamfer sealing Q by means of a band (10) and an overlapping joint in stamped sheet metal (1 1), so as to form the hollow cylinder (8) watertight on the lateral surface; and c) - have circular covers (18 and 19) equipped with drawers (21) forming a two-part sealing system, closing the cylinder (8) at its ends. 2- SEALING SYSTEM, in accordance with claim 1 and characterized in that said cylinder (8) formed by curved metal sheets (1, 2 and 3) has an internal structure configured by external flanges (12 and 13), by internal flanges (14, 15 and 16) and by the shaft (17), with both ends closed by means of circular covers (18 and 19). 3- SEALING SYSTEM, in accordance with claims 1 and 2, and characterized in that said circular covers (18 and 19) have openings (20) through which drawers (21) slide, forming a two-part sealing system, where said drawers (21) employ a set of friezes (22 and 23) providing watertight closure. of the cylinder (8) by its ends. 4- SEALING SYSTEM, in accordance with claims 1, 2 and 3, and characterized in that said curved metal sheets (1, 2 and 3) are shaped to receive: a) - a set of knives (24) that are fixed to the side surface of the cylinder (8) by means of fasteners such as screws and nuts (25 and 26), forming the feeding module (32a); b) - a set of blades (27), also fixed by means of screws and nuts (28 and 29) in metal inserts (30) welded to the side surface of said cylinder (8) forming the feeding module (32); and c) - have a combination of the knives (24) with the blades (27), forming the hybrid system (32b). 5- SEALING SYSTEM, in accordance with any of the previous claims and characterized in that said power module (32a) is completely dismountable, by removing the drawers (21), covers (18 and 19) and curved metal sheets (1, 2 and 3).

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