Arrangement applied to the movable roller arm with housings for bushing interchange.

Description

1 / 5 Arrangement applied to the movable roller arm with housings for bushing interchange. INTRODUCTION

[001] This utility model patent application relates to a “DISPOSITION APPLIED TO A MOVABLE ROLLER ARM WITH HOUSINGS FOR BUSHING INTERCHANGE” – a device applied to a movable roller arm with housings for changing bushings, more specifically a solution that allows the replacement of only the ends of the roller arm with their respective housings and bushings, with the aim of reducing wear and extending the component's service life. FIELD OF APPLICATION

[002] The innovation applies to the agro-industrial segment, more specifically to the floating rollers of sugarcane harvesters. CONVINCING

[003] Technicians are aware that in sugarcane harvesters, the roller system plays a crucial role in the efficiency of the harvesting process. The movable, upper rollers work together with the lower rollers to ensure the correct direction and feeding of the sugarcane to the chopping system, directly impacting the quality of the raw material and the productivity of the harvest.

[004] The movable roller arm plays a fundamental role in transporting the vegetable to the chopping system. The constant movement between the ends of the arm and the pins fixed to the chassis, made of materials treated for greater durability, causes premature wear on the arm tube, usually made of untreated carbon steel. The pins support the ends of the arm, which has a round tube machined at both ends that receive these two pins, keeping it supported.

[005] Premature wear requires complete arm replacement, even if other parts are still in good working condition, resulting in unnecessary costs and waste, as well as increased maintenance time and reduced harvesting process efficiency. Petition 870250003758, dated 16 / 01 / 2025, page 5 / 41 2 / 5

[006] On the market, there are several models of arms, which may differ depending on their position on the harvester, but they all have the same mechanism and working procedure.

[007] The arm is attached to the roller by two side plates: one responsible for fixing the arm to the hydraulic motor and the other fixed by a bearing with rollers, allowing the roller to be free and able to rotate, performing the cane transport process.

[008] In this context, new technologies that minimize wear on the moving roller arm and extend its service life are welcome in the segment in question. STATE OF THE ART

[009] The current state of the art includes some patent documents dealing with sugarcane harvesters, feeder rollers and related systems, such as document BR 102015010814 B1 entitled “CRUSHER DRUM MODULE FOR A SUGARCANE HARVESTER, AND SUGARCANE HARVESTER” - equipped with a chassis and a feeding mechanism. According to one aspect of the invention, the module may include a module frame, distinct from the chassis. The module frame may include first and second drum holes on each side of the module, the first drum holes and the second drum holes supporting, respectively, first and second crusher drums for parallel rotation.A plurality of mounting devices can be affixed to the module frame or chassis, wherein, when the plurality of mounting devices is in an engaged state, the module frame is fastened to the chassis by the mounting devices, whereby the crushing drums are aligned to receive sugarcane from the feeding mechanism.

[010] In the document above, despite claiming a shredding module, it is demonstrated that a sugarcane harvester cuts the plants from the ground, and then directs the cut stalks or stems through several feed rollers to the shredding drum assembly.

[011] Document BR 102016025547-3 A2 entitled “CHOPPING MODULE” characterized by comprising: a parallelepiped box-shaped body, with three Petition 870250003758, dated 16 / 01 / 2025, p. 6 / 41 The 3 / 5 open sides: the first side provides an inlet for the plants to be chopped, the second side provides an outlet for the chopped plants, and the third side provides an outlet for the waste. At the end of the fixed tube, there are internal rotating bushings for the ends of the end pins, whose opposite ends have fixing plates next to the corresponding sides.

[012] In the document above, a chopper module equipped with floating and static conveyor rollers is claimed, which uses a configuration typical of this type of component in sugarcane harvesters. However, the bushings are inserted directly into the fixed tube and secured to the pin by means of a rotating fitting, which requires the replacement of the entire tube at the end of the bushing's service life, in addition to increasing maintenance complexity and, therefore, machine downtime. INNOVATION OBJECTIVES

[013] The present innovation proposes an arrangement applied to the movable roller arm with housings for interchangeable bushings, in which the housings allow easy removal and replacement of wear bushings.

[014] The present innovation proposes an arrangement applied to the movable roller arm with housings for more sustainable interchangeability, since changing the bushings is more economical than replacing the entire arm.

[015] The present innovation proposes an arrangement applied to the movable roller arm with housings for interchangeability, in which the ease of changing the bushings reduces the harvester's downtime.

[016] The present innovation proposes an arrangement applied to the movable roller arm with housings for interchangeability, in which the proper functioning of the movable roller arm ensures efficiency in feeding the cane.

[017] The present innovation proposes an arrangement applied to the movable roller arm with housings for interchangeability, in which the fixing of the bushings in the housings ensures greater firmness and stability to the arm.

[018] The present innovation proposes an arrangement applied to a movable roller arm with housings for interchangeability, in which the housing and bushing system offers Petition 870250003758, dated 16 / 01 / 2025, page 7 / 41 4 / 5 a simple and effective solution to the problem of wear and tear, with easy implementation and maintenance.

[019] The present innovation proposes an arrangement applied to the movable roller arm with housings for interchangeability offering an optimal cost-benefit ratio. GENERAL DESCRIPTION OF THE MODEL

[020] The “ARRANGEMENT APPLIED TO THE MOBILE ROLLER ARM WITH HOUSINGS FOR BUSHING INTERCHANGE” aims to solve the problem of wear on the mobile roller arm by including wear bushings at the ends of the arm tube. The bushings, preferably made of high wear-resistant material, protect the arm tube, extending its service life and reducing the need for replacements. The solution consists of two housings, one at each end of the arm tube, designed to accommodate the wear bushings. The housings are dimensioned so as not to interfere with the pin dimensions and not require any alteration to the harvester or its transport system. The bushings are pressed into the housings, ensuring secure fixation and eliminating the need for field assembly. When a bushing wears out, it can be easily removed and replaced with a new one in a simple and quick process. DESCRIPTION OF THE DRAWINGS

[021] The model will be described in detail below, and for better understanding, reference will be made to the attached drawings, in which the following figures are represented. Figure 1: Perspective view of the arrangement applied to the movable roller arm with housings for interchangeability; Figure 2: Exploded perspective view of the arrangement applied to the movable roller arm with housings for interchangeability; Figure 3: Cutaway view of the arrangement applied to the movable roller arm with housings for interchangeability; Figure 4: Perspective view of the arrangement applied to the movable roller arm with housings for interchangeability, showing its use. DETAILED DESCRIPTION OF THE INVENTION Petition 870250003758, dated 16 / 01 / 2025, page 8 / 41 5 / 5

[022] The “ARRANGEMENT APPLIED TO MOBILE ROLLER ARM WITH HOUSINGS FOR BUSHING INTERCHANGE”, the subject of this utility model patent application, has housings (10) at the ends of the fixed tube (6) to accommodate wear bushings (11), protecting the arm (7) from friction and extending its service life. The housings (10) maintain the alignment and length of the arm (7). The bushings (11) are pressed into the housings (10), eliminating the need for field assembly, and are heat-treated for greater hardness and resistance, increasing the service life of the equipment.

[023] More specifically, the claimed innovation relates to an “ARRANGEMENT APPLIED TO A MOVABLE ROLLER ARM WITH HOUSINGS FOR BUSHING INTERCHANGE” formed by two side plates (1) with irregular rounded contour including curves and cutouts, crucial for receiving components, with a central hole (2) for inserting the hydraulic motor (A) responsible for rotating the movable feeder rollers (3) and at the distal end, the same central hole (2) used for the bearing (B), in addition to a semicircular cutout (4) underlain by pairs of parallel reinforcements (5) for supporting the fixed tube (6) of the movable roller arm (7). The ends of the fixed tube (6) are inserted into pins (8) that connect to the sides (9) of the combine harvester structure.The innovation lies in the inclusion of two tubular housings (10) at the ends of the fixed tube (6), which are designed to accommodate wear bushings (11). These bushings protect the fixed arm (6) from friction with the pins (8) and extend its service life. The housings (10) are fixed while maintaining the original alignment and length of the movable roller arm (7), without requiring any modifications to the machine. In turn, the wear bushings (11) are pressed into the housings (10), ensuring firm fixation and eliminating the need for field assembly. Furthermore, they undergo heat treatment to increase their hardness and resistance, extending their service life and contributing to the efficiency of the equipment.

[024] The solution in question is innovative and efficient for securing moving rollers in sugarcane harvesters, combining optimized construction, ease of maintenance and greater durability, resulting in increased productivity and resource savings. Petition 870250003758, dated 16 / 01 / 2025, p. 9 / 41

Claims

1 / 1 CLAIM 1) “ARRANGEMENT APPLIED TO MOBILE ROLLER ARM WITH HOUSINGS FOR BUSHING INTERCHANGE”, consisting of two side plates (1) with irregular rounded contour including curves and cutouts, crucial for receiving components, with a central hole (2) for inserting the hydraulic motor (A) responsible for rotating the mobile feeder rollers (3) and at the distal end, the same central hole (2) used for the bearing (B), in addition to a semicircular cutout (4) underpinned by pairs of parallel reinforcements (5) for supporting the fixed tube (6) of the mobile roller arm (7); the ends of the fixed tube (6) are inserted into pins (8) that connect to the sides (9) of the combine harvester structure, characterized by the inclusion of two housings (10), of tubular sections, at the ends of the fixed tube (6), to accommodate wear bushings (11); the wear bushings (11) are pressed into the housings (10) and are subjected to heat treatment. Petition 870250003758, dated 16 / 01 / 2025, p. 10 / 41

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