JPS6111563B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a sugar cane harvester.

The sugar cane harvester cuts the sugar cane stalks at a height close to the ground, and sends the stalks, thick end first, backwards and upwards onto a conveyor to the cutting machine. The cutting machine cuts the incoming stems into billet sizes, and the cut stems are sent to an elevator, where they are placed in a box that is indexed to a tractor.

Sugar cane is usually roasted before harvesting to remove much of the leaves, etc. from it, and must be harvested as soon as possible. If the sugarcane is not harvested immediately, the quality of the sugarcane will be very poor. However, unexpected rainfall or other causes often delay the harvest, which is a loss for farmers. Even when sugar cane is harvested immediately after roasting, its sugar content is usually lower than when it is harvested. Harvesting machines produced to date have generally not been satisfactory in removing much of the leaves, etc. attached to unburned sugar cane.

The harvester of the present invention has effective means for removing most of the leaves etc. from the sugar cane and is therefore suitable for harvesting unburnt sugar cane.

In other words, the harvesting machine of the present invention replaces the conventional relatively simple in-machine conveyor, and while the sugar cane stalks are fed inside the machine with the thick end first, several unnecessary parts such as leaves attached to the stalks are removed. It is equipped with an efficient power conveyor that uses roller blades to repeatedly strike the sugar cane to separate it from the stalks, and immediately remove the separated unnecessary parts to the lower part of the conveyor.The conveyor is located above the sugar cane stalks being fed. a series of upper feed rollers positioned on the underside and a lower series of lower feed rollers positioned parallel to each other across the harvester, with the upper and lower feed rollers oriented in opposite directions. The rollers are configured to rotate to feed the sugar cane rearward between the rollers, and one roller is installed directly below the adjacent lower feed rollers.
cleaning rollers are provided to be rotatable at the same speed and in opposite directions relative to the lower feed roller, and at least the lower feed roller and the cleaning roller have longitudinal blades extending radially at equal angular intervals on their circumferential surfaces. , saw teeth are formed on the outer edge of each blade, and the cleaning roller and the adjacent lower feed roller are in a state in which the blades mesh with each other during rotation, thus preventing the stem from moving between the upper and lower feed rollers. It is characterized in that the separated leaves are discharged downward by a cleaning roller.

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the harvester of the present invention has front wheels 10 and rear wheels 11. This harvester also has a cutter (not shown) for cutting the tip of the sugar cane stalk, which is attached to a rod 12 that extends diagonally upward from the front part and is vertically adjustable. When the harvester moves forward, it is equipped with a pair of intake arms 13 that pass on both sides of the row of sugar cane, and a rotary lifter 14 that picks up the cut down sugar cane. The sugar cane stalks are aligned in the horizontal direction and are cut down near the ground by two base cutters 15 that rotate in opposite directions.

A roller 16 is provided above the rear part of the base cutter 15 and is movable up and down to a certain extent. The sugar cane stalks are fed into the rear of the harvester, thick end first.

Cut down sugar cane stalks are base cutters 1
5 to the cutter assembly 17. This cutter assembly 17 cuts sugar cane to the same length and is of a suitable known type.

The upper feed roller 1 transports the sugar cane stalks from the base cutter 15 to the cutter assembly 17.
8. A conveyor cleaning system consisting of a lower feed roller 19 and a cleaning roller 20. These rollers 18, 19, 20
are all the same, each has a pair of discs 21 attached to both ends of a drum 22 (the drum 22 has a smaller diameter than the disc 21), and from the drum 22 a plurality of blades 23 are mounted at equiangular intervals. are formed radially. These blades 23 have saw teeth on their outer edges and are fixed to the disk 21 at both ends. Each roller 18, 19, 20 also has a shaft 24 in its center.

The shafts 24 of the upper and lower feed rollers 18, 19 are rotatably received in bearings (not shown) mounted on the frame of the harvester.
The upper feed roller 18 is a chain transmission (not shown)
Because the upper feed rollers 18 are driven by
9 so that both feed rollers 18, 19 are able to feed the sugarcane rearwardly between them.

The cleaning roller 20 is provided between three of the four lower feed rollers 19, excluding the first one, as shown in FIG. The axes of the mutually parallel shafts 24 of the lower feed rollers 19 lie in a plane that slopes upwardly from front to rear. Further, the mutually parallel shafts 24 of the cleaning roller 20 lie in a plane that is parallel to and located below the above-mentioned plane that includes the axis of the shaft 24 of the lower feed roller 19. The discs 21 at both ends of each of the lower feed roller 19 and the cleaning roller 20 are closely adjacent, and the blades 23 of the lower feed roller 19 mesh with the blades 23 of the cleaning roller 20. The cleaning roller 20 rotates at the same speed as the lower feed roller 19, but in the opposite direction of rotation.

A small lift roller 25 is provided between the first lower feed roller 19 (leftmost in FIG. 1) and the second roller 19 to lift the thicker end of the sugar cane stalk. This roller 2
5 has an axis within the above-mentioned plane that includes the axis of the cleaning roller 20, but the direction of rotation is the same as that of the lower feed roller 19.

The sugar cane stalks cut down by the base cutter 15 are sent between an upper feed roller 18 and a lower feed roller 19. If a stalk of sugarcane falls with its thick end down between the first and second lower feed rollers 19, it is lifted into its correct position within the conveyor system by lift rollers 25. Leaves and the like adhering to the sugar cane are caught by a cleaning roller 20 that rotates in the opposite direction to the lower feed roller 19 and are dropped to the ground. Also, lower feed roller 1
The counter-rotation of the cleaning roller 9 and the cleaning roller 20 generates a strong downward wind, which helps to clean the sugar cane (i.e., remove leaves, etc.). Even though the cleaning roller 20 rotates in the opposite direction to the lower feed roller 19, it is located below between the lower feed rollers 19 and does not directly touch the conveyed stalks, so it does not interfere with the feeding of sugar cane. .

The harvester of the present invention is also very effective in removing stones and suckers from the thicker ends of sugar cane stalks.
Lower feed roller 19 and cleaning roller 2
Due to the engagement of the blades 23 of 0, the rollers 1
Since the rollers 9 and 20 are kept clean, leaves and the like do not adhere to the rollers 19 and 20.

The cleaning device used in the present invention cleans the sugar cane by removing most of the leaves, etc., before the sugar cane is cut into short pieces in the cutting assembly 17 and lifted up by an elevator (not shown).
Significantly reduces the load on other cleaning components normally attached to the lifting and evacuation system.

[Brief explanation of the drawing]

FIG. 1 is a partial vertical sectional view of the sugar cane harvester of the present invention, and FIG. 2 is a perspective view of one of the plurality of rollers constituting the conveyor cleaning system of the harvester of FIG. . 18... Upper feed roller, 19... Lower feed roller, 20... Cleaning roller, 25
...Lift roller.

Claims (1)

[Scope of Claims] 1. A sugar cane harvesting machine equipped with a power conveyor for feeding sugar cane stalks on a frame with the thick end first, the conveyor being a series of conveyors located above the sugar cane stalks to be fed. an upper feed roller and a series of lower feed rollers located below, the rollers being arranged parallel to each other across the harvester, the upper feed rollers and the lower feed rollers rotating in opposite directions to each other. and one cleaning roller is provided directly under each of the adjacent lower feed rollers so as to be able to rotate in the opposite direction at the same speed as the lower feed roller, At least the lower feed roller and the cleaning roller have longitudinal blades extending radially at equal angular intervals on their circumferential surfaces, and saw teeth are formed on the outer edge of each blade,
The blades of the cleaning roller and the lower feed roller adjacent to it are engaged with each other during rotation, and leaves separated from the stems that move between the upper and lower feed rollers are discharged downward by the cleaning roller. A sugar cane harvesting machine characterized by: 2. The sugar cane harvester according to claim 1, wherein the upper feed roller and the lower feed roller rotate at the same speed. 3. Among the lower feed rollers, the conveyor has a small-diameter lift roller that is rotated in the same direction as the lower feed roller, instead of the cleaning roller, between the frontmost roller and the next roller. The sugar cane harvesting machine according to claim 1, wherein the lift roller guides the thick end of the sugar cane fed to the conveyor first onto the next lower feed roller. 4. A patent claim characterized in that the shafts of the upper feed roller, the lower feed roller, and the cleaning roller are each arranged so that the rear axis is located higher than the front axis, and the conveyor conveys the sugar cane stalks diagonally upward. The sugar cane harvesting machine according to item 1. 5. A patent characterized in that the upper feed roller has longitudinal flat blades extending radially at equal angular intervals on its circumferential surface, and saw teeth are formed on the outer edge of each blade. Claim 2
The sugar cane harvester described in section. 6. The upper feed roller, lower feed roller, and cleaning roller each have a disk at both ends that is smaller in diameter than the circle drawn by the outer edge of the blade,
6. The sugar cane harvesting machine according to claim 5, wherein the discs of the lower feed roller and the cleaning roller that are adjacent to each other have outer peripheral edges of the discs very close to each other.