BR-202024018100-U2 - CONSTRUCTIONAL ARRANGEMENT APPLIED IN A TOBACCO LEAF HARVESTER WITH MECHANICAL TRACTION TRANSMISSION

Abstract

This utility model patent application pertains to the agricultural machinery segment, more specifically to specialized harvesting equipment. Notably, it describes a tobacco leaf harvester with mechanical drive transmissions, manufactured in Brazil, ensuring easy maintenance and operation. The machine features robust metal tracks, and its construction reduces fluid consumption, such as oils, minimizing the risk of leaks. The tires are sized to provide better traction on uneven terrain. The bucket is designed to prevent tipping, and the equipment configuration allows for speed variations, adapting to the operator's needs.

Inventors

• PAULO RENÉ FALEIRO DOS SANTOS

Assignees

• MJF - INDUSTRIA DE MAQUINAS LTDA - ME

Dates

Publication Date

20260317

Application Date

20240903

Claims (2)

1. 1) "CONSTRUCTIVE ARRANGEMENT APPLIED IN A TOBACCO LEAF HARVESTER WITH MECHANICAL TRACTION TRANSMISSION" conceives a tobacco leaf harvester (1) with mechanical traction transmission; characterized by containing a mechanical traction transmission (2) by chain (3) and toothed wheel (4), as well as a rectangular storage box (5) storing the harvested leaves, integrated with double rotor (7) fans (6); having at the front of the box (5), a secondary conveyor (8) guiding the leaves to the box (5), while the press conveyor (9) takes the leaves to the storage area, the primary conveyor (10) transports the next stage, and the defoliating conveyor (11) directs them to the primary conveyor (10); having a roller defoliator (12) driven by independent hydraulic motors (14), rotating the propellers (13) penetrating between the leaves.
2. 2) "GRID TYPE DEFOLIER", according to claim 1; characterized by containing a grid defoliator (15), performing an up and down movement, removing the leaves from the stem and letting them fall onto the smaller conveyor belt.

Description

TECHNICAL FIELD [001] This utility model patent application pertains to the agricultural machinery segment, more specifically to specialized harvesting equipment. Notably, a tobacco leaf harvester with mechanical drive transmissions, manufactured in Brazil, was designed, ensuring easy maintenance and operation. The machine features robust metal tracks, and its construction reduces fluid consumption, such as oils, minimizing the risk of leaks. The tires were sized to provide better traction on uneven terrain. The bucket was designed to prevent tipping, and the equipment configuration allows for speed variations, adapting to the operator's needs. HISTORY OF THE TECHNIQUE [002] The manual process of tobacco harvesting is extremely laborious, requiring a significant amount of manpower to cut, transport, and process the leaves. The mechanization of agriculture began to gain momentum in the early 20th century, with the development of machines for various crops such as wheat, corn, and cotton. However, tobacco harvesting remained manual for longer due to the fragility of the leaves and the need for special care during the harvesting process. [003] Starting in the 1950s, experiments began to create machines that could harvest tobacco efficiently. The first harvesters were experimental and rudimentary models, which often caused damage to the leaves. [004] The introduction of tobacco harvesters allowed producers to reduce labor costs, which was one of the main challenges in large-scale production. With machines capable of operating faster and more efficiently, it was possible to expand planting areas and increase production without a proportional increase in harvesting costs. [005] Mechanization has brought more uniformity to the harvesting process, helping to maintain the quality of the leaves and, consequently, of the final product. Thus, combine harvesters emerged as part of the broad movement of agricultural mechanization, driven by the need for greater efficiency, cost reduction and increased production in a globally competitive industry. State of the Art Analysis [006] Research conducted in specialized databases revealed documents relating to tobacco harvesters, such as document no. PI 1004364-0, which deals with a "TOBACCO LEAF HARVESTER," as described in the report and as shown in the attached illustrations. It is characterized by the automation of equipment used for the mechanized harvesting of tobacco leaves directly in the field, composed of mobility and transport aspects already known in the state of the art, as self-propelled agricultural equipment, but presenting as an innovation the defoliating devices specifically built for the efficient and agile harvesting of tobacco leaves. [007] Document No. BR 202019010149-6, which deals with an "IMPROVEMENT INTRODUCED IN A TOBACCO HARVESTER", the present Utility Model patent application, is essentially characterized by equipment whose function is to assist in the tobacco harvesting stage; it is composed of: main body (1), responsible for securing the other parts of the equipment; seats (2), with the function of accommodating the driver; baskets (3), with the function of storing the newly harvested tobacco; tires (4), 14-inch rim wheels, which are in contact with the ground; hydraulic motors (5), with the function of providing individual traction for each tire (4); tank (6), with the function of supplying fuel for its operation; cover (7), with the function of protecting the driver from sun and rain; hydraulic lever (8.1), with the function of moving the seat up or down; hydraulic lever (8.2), with the function of moving the rear part of the equipment; hydraulic lever (8.3), with the function of moving the front part of the equipment; hydraulic lever (8.4), with the function of moving the seats to the left or right; hydraulic lever (8.5), with the function of moving the baskets to the left or right and engine (9), diesel, with a linear speed of up to 18 m/min. [008] Document No. BR 102020025746-3, which deals with a "TOBACCO HARVESTER", also suitable for harvesting and collecting plants with similar characteristics, comprising supports (1) for coupling to the elevated tractor arranged on a fixed chassis (2) to which is articulatedly coupled, from its lateral ends, a mobile chassis (6) by means of corresponding upper arms (3) and lower arms (4) of respective articulated parallelograms in which corresponding hydraulic cylinders (5) are arranged. On the sides of the front part of the mobile chassis (6) are attached respective cutting bars (8) where the circular saws (8.4) for cutting the stem and circular saws (8.5) for forming notches in the stems are mounted, and mechanisms (8.2) for fixing and transporting the stems. Said parallelograms with hydraulic cylinders (5) define an ascending and descending mechanism regulating the working height of the cutter bars (8) on the ground. In said upper arms (3) is disposed a guide (3.1) limiting the displacement of the rod of