Automatic oscillating support arm for grain harvester auger

Abstract

The present invention is made up of two symmetrical and parallel side plates (5) that comprise internal bearings (7) incorporating a shaft (8) from which extends a rocker that acts as the support arm (9) of the auger (10), imparting oscillating motion, transverse limiters (12) that regulate vertical displacement (Y) also being provided, while horizontal displacement (X) is delimited by stud bolts (18) that move a T-shaped bar (20) connected to the internal bearings (7).

Description

[0001] Automatic oscillating support arm for grain harvester auger.

[0002] INTRODUCTION

[0003]

[0001] This Patent Application relates to a novel “AUTOMATIC OSCILLATING SUPPORT ARM FOR GRAIN HARVESTER AUGER”, from which an oscillating “hawk” projects from the harvester platform, supported by roller bearings that allows the auger to oscillate according to the equipment's operating needs, as well as allowing, by means of horizontal and vertical displacement limiters, the application of said auger in various harvester models.

[0004] FIELD OF APPLICATION

[0005]

[0002] The invention is applied in the agricultural industry, more specifically for supporting the auger, parallel to the cutting bar, of grain harvesters.

[0006] CONVINCING

[0007]

[0003] It is known to those skilled in the art that the cutting platforms of grain harvesters comprise a tubular auger that occupies its entire front part, provided with helical sections which, when rotating, together with the auger, move the harvested plant mass through the cutter bar towards the center of the aforementioned platform, which then goes to the feeder channel normally located in the central rear part of the cutting platform, into the interior of the machines.

[0008]

[0004] In the field, there is a difference in the volume of harvested mass compared to the mass displaced as a function of the harvester's speed. In practice, the volume of harvested mass increases in the central direction of the auger.

[0009]

[0005] Thus, the greatest effort and mechanical demand on the auger occurs in the central region, where, obviously, the largest volume of harvested mass circulates. Therefore, if the auger support is static, there is excessive mechanical stress on the assembly, which can lead to malfunction or even breakage.

[0010]

[0006] It is also noteworthy that current supports and augers are specific to harvesters from certain manufacturers, making interchangeability between equipment impossible.

[0007] In this context, new technologies that can reduce the mechanical stress on the center of the augers and enable product interchangeability are welcome in this segment.

[0011] STATE OF THE ART

[0012]

[0008] The current state of the art includes patent documents concerning supports and augers for grain harvesters, such as BR 202015006489-1 U2 entitled “IMPROVEMENT OF THE AUGER SYSTEM IN A HARVESTER” - comprising an auger installed on the harvester platform that features a pair of smaller diameter tubes joined in the central portion and supported on a central tower with bearings fixed to the platform chassis, allowing the auger to maintain alignment during operation. The smaller diameter tubes are supported by bearings at the ends of the platform, providing the auger with four support points to eliminate the possibility of warping.

[0013]

[0009] In the prior art document above, the auger support is static, i.e., with zero travel, not following the volume of mass harvested during the combine operation, which increases and decreases, overloading when the stress on the support itself and on the combine's central tower increases. Furthermore, there is no feature that allows limiting the horizontal or vertical displacement of the reel, which prevents its use in different manufacturers and models of the equipment.

[0014] OBJECTIVES OF THE INVENTION

[0015]

[0010] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger capable of mechanically following, solely by the action of gravity, the variation in the volume of harvested mass throughout the harvester's operation.

[0016]

[0011] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger capable of mitigating the stresses on the harvester platform and on the arm itself.

[0017]

[0012] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger with horizontal and vertical displacement limiters, which allows the auger to be used in different manufacturers and models of harvesters.

[0013] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger of great constructive simplicity.

[0018]

[0014] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger that increases the service life of the auger, retractable fingers, arm and anchoring parts.

[0019]

[0015] The objective of the present invention is to propose an automatic oscillating support arm for a grain harvester auger with an excellent cost-benefit ratio.

[0020] GENERAL DESCRIPTION OF THE INVENTION

[0021]

[0016] The “AUTOMATIC OSCILLATING SUPPORT ARM FOR GRAIN HARVESTER AUGER” - consisting of a rocker arm, also known as a “hawk”, with the front end supported on roller bearings positioned on side plates and the distal end connected to the auger, which allows it to be adjusted mechanically and automatically according to the operating needs of the harvester. The side plates contain horizontal and vertical displacement limiters for the rocker arm, which allows the auger to be used in different manufacturers and models of harvesters.

[0022] DESCRIPTION OF THE FIGURES

[0023]

[0017] The invention is explained below with reference to the accompanying drawings, which are represented in an illustrative and non-limiting manner:

[0024] Fig. 1: Perspective view of the automatic oscillating support arm for a grain harvester auger;

[0025] Fig. 2: Inverted perspective view of the automatic oscillating support arm for a grain harvester auger;

[0026] Fig. 3: Exploded perspective view of the automatic oscillating support arm for a grain harvester auger;

[0027] Fig. 4: Perspective view of the chassis of the automatic oscillating support arm for a grain harvester auger;

[0028] Fig. 5: Perspective detail of the bearing of the automatic oscillating support arm for a grain harvester auger;

[0029] Fig. 6: Perspective detail of the vertical adjustment of the automatic oscillating support arm for a grain harvester auger;

[0030] Fig. 7: Perspective detail of the horizontal adjustment of the automatic oscillating support arm for a grain harvester auger;

[0031] Fig. 8: Side view in section of the automatic oscillating support arm for a grain harvester auger, in the lowered vertical position and retracted horizontally;

[0032] Fig. 9: Side view in section of the automatic oscillating support arm for a grain harvester auger, in intermediate vertical and horizontal positions;

[0033] Fig. 10: Side view in section of the automatic oscillating support arm for a grain harvester auger, in the raised vertical position and extended horizontally;

[0034] Fig. 11: Perspective view of the automatic oscillating support arm for a grain harvester auger, illustrating its use on any auger;

[0035] DETAILED DESCRIPTION OF THE INVENTION

[0036]

[0018] The “AUTOMATIC OSCILLATING SUPPORT ARM FOR GRAIN HARVESTER AUGER”, object of this Invention Patent application, formed by two symmetrical and parallel side plates (5) that house internal bearings (7) that integrate a shaft (8) from which a rocker arm projects, representing the support arm (9) of the auger (10) providing the oscillating movement, in addition to having transverse limiters (12) that regulate the vertical displacement (Y), with the horizontal displacement (X) delimited by stud bolts (18) that move a “T” shaped plate (20) connected to the internal bearings (7).

[0037]

[0019] More specifically, the invention relates to an “AUTOMATIC OSCILLATING SUPPORT ARM FOR GRAIN HARVESTER AUGER”, mounted on the structure (1) of the cutting platform of a grain harvester (not shown) by means of “L” shaped bars (2) duly fixed by screws (3) and nuts (4) that embrace symmetrical and parallel side plates (5), with front “V” shaped recesses (6), compatible for seating on the structure (1) of the aforementioned cutting platform, wherein at the midpoint of said symmetrical and parallel side plates (5) there are internal roller bearings (7), which receive a shaft (8) from which projects a rocker arm, also known as a “hawk”, which represents the support arm (9) of the auger (10) that is connected to its distal end (11) attributing the oscillating movement mechanically, without without the aid of pneumatic and / or hydraulic resources, that is, only with the action of gravity and the counterforce coming from the ground.The vertical displacement (Y) of the support arm (9) is achieved through overlapping transverse limiters (12) with a central slot (13) compatible with the thickness (14) of the support arm (9) itself, whose axes (15) bolted with nuts (4) run along the upper oblong (16) and lower oblong (17) existing in the rear section of the support arm (9). In this way, it is possible to delimit the stroke / displacement of the arm (9) and, therefore, the volume of the harvested mass by adjusting the distance between the bolted axes (15) of the oblongs (16, 17), as well as allowing the use of the auger (10) in harvesters of different specifications and manufacturers. To adjust the upper transverse limiter (12), simply position it at the desired height and apply torque to the axes (15) bolted with nuts (4).The adjustment of the lower transverse limiter (12) is done by means of stud bolts (18) attached to a base (19) which, when the nuts (4) are actuated, moves the lower transverse limiter (12) with it. On the other hand, the horizontal displacement (X) of the support arm (9) is also done by means of stud bolts (18) which, actuated by the nuts (4), move a T-shaped plate (20), connected to the internal bearings (7), which run along upper (21) and lower (22) oblongs, displacing the entire support arm (9) of the spiral (10) in this direction.

Claims

CLAIM 1) “AUTOMATIC OSCILLATING SUPPORT ARM FOR GRAIN HARVESTER AUGER”, mounted on the structure (1) of the cutting platform of a grain harvester (not shown) by means of “L” shaped bars (2) duly fixed by screws (3) and nuts (4) that embrace symmetrical and parallel side plates (5), with front “V” recesses (6), compatible for seating on the structure (1) of the aforementioned cutting platform, characterized by at the midpoint of the symmetrical and parallel side plates (5) there are internal roller bearings (7), which receive a shaft (8) from which a rocker arm projects that represents the support arm (9) of the auger (10) attributing the oscillating movement mechanically;The vertical displacement (Y) of the support arm (9) is achieved through overlapping transverse limiters (12) with a central slot (13) compatible with the thickness (14) of the support arm (9), whose axes (15), bolted with nuts (4), run along the upper oblong (16) and lower oblong (17) existing in the rear section of the support arm (9); the horizontal displacement (X) of the support arm (9) is also achieved by means of stud bolts (18) which, actuated by the nuts (4), move a “T” shaped plate (20), connected to the internal bearings (7), which run along the upper (21) and lower (22) oblongs, displacing the entire support arm (9) of the spiral (10) in this direction.

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