BR-112021019159-B1 - SUGAR CANE HARVESTER WITH IMPROVED BASE CUTTER GEARBOX ASSEMBLY

Abstract

SUGAR CANE HARVESTER WITH IMPROVED BASE CUTTER GEARBOX ASSEMBLY. The present invention relates to a sugar cane harvester and, more particularly, to a sugar cane harvester with an improved base cutter gearbox assembly. An improved base cutter gearbox assembly comprises a base cutter gearbox configuration that is represented as a base cutter unit. As represented, the input interface is a grooved connector, configured to receive the output shaft of the hydraulic motor. The input interface is configured so that the rotational power received at the interface by a hydraulic motor causes the pinion gear (2) to rotate. The pinion gear (2), in turn, rotates the main gear (1) and the intermediate timing gear (3). The intermediate timing gear (3) then rotates the main gear (4). The gears used in the base cutter gearbox employ an ideal helix angle designed to support and relieve the load on each tooth and create a smooth transition of forces from one tooth to the next. The result (...).

Inventors

• KAUSHIK ANILBHAI DAMANI

Assignees

• Tirth Agro Technology Pvt. Ltd

Dates

Publication Date

20260310

Application Date

20200317

Priority Date

20190329

Claims (2)

1. 1. Sugarcane harvester with improved base cutter gearbox assembly comprising a pair of rotary base cutters (7a, 7b), a helical gearbox assembly connected to the base cutter (7a, 7b), said pair of rotary base cutters (7a, 7b) having protruding blades (8a, 8b); said gearbox assembly comprising a main gear (1) and (4) having a plurality of serrations on the outer periphery thereof; a pinion gear (2) having a plurality of serrations on the outer periphery thereof and meshing with the serration of the main gear (1); an intermediate timing gear (3) accommodating a grooved connector having a plurality of serrations on the outer periphery and meshing with the serration of the pinion gear (2) and the main gear (4); characterized in that said base cutters (7a, 7b) are operatively connected to the main gear (1, 4) via vertical shafts (6a, 6b), respectively wherein a hydraulic motor (5) is connected to the pinion gear (2) by means of a grooved connector (2), the pinion gear (2) is configured to rotate the main gear (1) and the main gear (4) by means of the intermediate timing gear (3).
2. 2. Working method of sugarcane harvester with improved base cutter gearbox assembly characterized in that it comprises the following steps: a) receiving rotational power from the hydraulic motor (5) to the grooved connector via the output shaft; b) rotating the pinion gear (2) via the grooved connector; c) rotating the main gear (1) and the intermediate timing gear (3) via the pinion gear (2); d) rotating the main gear (4) via the intermediate timing gear (3); e) rotating the pair of rotating base cutters (7a, 7b) via the vertical shaft (6a, 6b) via the main gear (1, 4), respectively.

Description

FIELD OF INVENTION [0001] The present invention relates to a sugarcane harvester and, more particularly, relates to a sugarcane harvester with an improved base cutter gearbox assembly. BACKGROUND OF THE INVENTION [0002] There are several types of sugarcane harvesters in the field that harvest growing sugarcane stalks by cutting the cane at its base and then transferring the cut sugarcane to a collecting vehicle, such as a cane cart or cane wagon. The sugarcane harvester may include different types of harvesting devices. The harvesting devices for a sugarcane harvester may include assemblies for cutting, chopping, separating, transporting, collecting, and processing sugarcane plants. Generally, harvesting devices include a crop divider assembly, a detachable roller assembly, a base cutter assembly, feed rollers, cutting drums, and so on. [0003] For dynamic crop harvesting, a combine harvester can move along a field with the harvesting devices mentioned above, where the harvesting devices perform the collection and processing of material from rows of crop plants. Base cutters are constructed to minimize the amount of soil fed into the combine harvester with the crop. The base cutter gearbox of the prior art in sugarcane harvesters had sprocket gears whose surfaces have rolling contact, but the teeth are cut straight on one face; one or two teeth are always in contact with another gear. This incomplete face engagement means that sprocket gears are noisier and vibrate more than helical gears. [0004] Furthermore, the basic cutterbox of prior art with sprocket gears has a much shorter service life than helical gears. After about three years, they are usually replaced. And frequent replacement requires more capital and increases maintenance costs, downtime and waste disposal. [0005] Furthermore, in prior techniques, the base cutter gearbox of prior techniques causes a lot of noise and vibration, and this means low precision and limited service life. Rotating machines that are noisy and vibrate can have a number of quality problems: improperly balanced rotating components; coupling components with excessive tolerances; and components that are not rigid enough, flexing under load and leading to misalignment. [0006] Furthermore, the disadvantage of the base cutter gearbox of the previous techniques is that the second quality indicator gets excessively hot. This equates to low efficiency and wasted energy. Heat generation in rotating machines can also have many causes, including inefficient design, misalignment, incorrect adjustments, and seal lag. Low-quality gear reducers are the main contributors to excessive energy consumption. These gearboxes get extremely hot. [0007] Consequently, there is a desperate need to invent a sugarcane harvester with an improved base cutter gear set to avoid noise and vibration. Misalignment, excessive energy consumption, incorrect adjustments, seal lag and overheating. OBJECTIVE OF THE INVENTION [0008] The main objective of the present invention is to overcome the problem associated with the base cutter gearbox assembly of the sugarcane harvester, by providing an improved base cutter gear assembly for proper harvesting in the fields. [0009] Another objective of the present invention is to provide an improved base cutter gearbox assembly to support and relieve the load on each tooth and create a smooth transition of forces from one tooth to the next, less vibration, wear and noise, and longer service life. [0010] An additional objective of the present invention is to provide an improved base cutter gearbox assembly to enable the achievement of a high-efficiency gear mesh. [0011] Yet another objective of the present invention is to provide an improved base cutter gearbox assembly to increase efficiency and provide an efficient design to counteract misalignments, incorrect adjustments, seal lag and overheating. [0012] Yet another objective of the present invention is to provide an optimized base cutter gearbox. SUMMARY OF THE INVENTION [0013] The present invention relates to a sugarcane harvester and, more particularly, relates to a sugarcane harvester with an improved base cutter helical gearbox assembly. An improved base cutter helical gearbox assembly has a configuration that is represented as a base cutter unit. As represented, the input interface is a grooved connector, configured to receive the output shaft of the hydraulic motor. The input interface is configured so that the rotational power received at the interface by a hydraulic motor causes the pinion gear to rotate. The pinion gear rotates around the main gear and the intermediate timing gear. The intermediate timing gear then rotates the main gear. Said gears used in the base cutter gearbox use an ideal helix angle designed to support and relieve the load on each tooth and create a smooth transition of forces from one tooth to the next, therefore less vibration, wear and noise and longer service life. BRIEF DESCRIPTION OF THE