JPS6343053B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bundled culm discharging device for a combine harvester that discharges bundled culms by dropping them with their roots facing down and standing them up on a field.

As such a bundled culm discharge device, a knotter (tying device) is provided at the threshing culm discharge position of the combine harvester, and the tip side of the bundled culm with its tip side tied is clamped at the bundled culm discharge position of the knotter. For example, a conveyor chain and a clamping rail are provided to transport the plant with the plant head free, and the plant is dropped from the end of the transport with the plant plant head down, and the bundled culms are erected on the field and released. This was proposed in Japanese Patent Application Laid-Open No. 54-35054. In this bundled culm discharging device, it is desirable that the base of the bundled culm, which is conveyed in a free position with the tip side clamped, has an approximately circular shape in order to stand in the field.
The stock side of the discarded culm bundle, which has been compressed by a knotter and tied near the tip, is often transported and released in a compressed state. If the plant is transported only with the plant head side free, the outer shape of the plant plant side will not change, and for this reason, there is a problem in that the bundled culms released from the end of the transport are difficult to stand on the field.

Therefore, in the present invention, the tip side of the bundled culm is held between a conveyor chain and a clamping rail, and the stem side is freed, and the bundled culm is conveyed.A rotational force is applied to the tip side during the conveyance process, so that the stem side is shaped into a substantially circular shape. To provide a combined culm discharging device for a combine harvester, which enables the bundled culm discharging device for a combine harvester to reliably stand on the field the bundled culm which is spread out, released from the conveyance end of the conveyance chain, and falls down.

For this purpose, the present invention applies rotational force to the side of the pinning rail facing the conveyance chain by contacting with the tip side of the bundled culms being transported, and uses the centrifugal force to apply rotational force to the tip side of the bundled culms. It is characterized by being provided with a resistor whose sides widen into a circular shape.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes a combine harvester, and a knotter 2 is provided at the rear of the combine harvester 1 at a threshing and culm discharge position. The T-shaped protrusion 3 of this knotter 2 is provided near the tip of the threshing culm, and the culm is tied at this position. An endless conveyor chain 4 is provided on one side and extends diagonally backward and diagonally upward. 2 from the support body of this conveyance chain 4.
A gripping rail 6 is supported via a book support pipe 5 so as to face the conveying surface of the conveying chain 4 in a substantially horizontal direction. The starting end of the clamping rail 6 is slightly shifted rearward from the transport starting end of the transport chain 4.

An auxiliary conveyance chain 7 is disposed in an endless manner below the starting end of the conveyor chain 4, at a predetermined distance from the conveying chain 4, and extending below the starting end of the strapping rail 6. The auxiliary conveyance chain 7 has conveyance claws 7a protruding from its outer periphery at predetermined intervals, and has a sprocket wheel supported coaxially with the rotating shaft 4b of the sprocket wheel 4a of the conveyance chain 4, as shown in FIG. 7b and a sprocket wheel 7c supporting this sprocket wheel 7b at a predetermined distance apart,
It is adapted to rotate in synchronization with the conveyance chain 4 in the same direction. The conveyance end portions of the conveyance chain 4 and the clamping rails 6 are turned and bent in the traveling direction of the machine body to be opened, and a discharge guide plate 8 is provided on the front side thereof.

On the other hand, a chevron-shaped protrusion 6a is provided on the conveying surface near the starting end of the clamping rail 6 and protrudes to face the conveying chain 4. This protrusion 6a provides resistance to the bundled culm which is conveyed with the tip side held between the conveyance chain 4 and the pinching rail 6, and rotates the bundled culm in the horizontal direction by the frictional resistance caused by the feeding action of the conveyance chain 4. It works by using centrifugal force to spread the hanging stock side into a circular shape.

In the bundled culm discharge device configured in this way,
The waste culm threshed by the combine harvester 1 is scraped into the knotter 2 in an almost horizontal and horizontal position, compressed and bundled at the T-shaped protrusion 3 and discharged. The sides are held between a conveyance chain and a clamping rail 6 and conveyed. The base side of the bundled culm, which is conveyed with the tip side held in this way, hangs down by its own weight, engages with the conveyance claw 7a of the auxiliary conveyance chain 7, and receives a feeding action. By the feeding action of the auxiliary conveyance chain 7, the posture of the bundled culm, which has been conveyed with the tip side leading and the stock side a little behind, is corrected to a substantially vertical posture.

Further, when the bundled culm comes to the position of the protrusion 6a of the clamping rail 6, it comes into contact with the outer circumferential surface of the protrusion 6a, and a horizontal rotational force is applied to the bundled culm around the clamping position, causing the bundled culm to rotate. Due to this rotation, the stem side of the bundled culm, which is still discharged in a flat shape from the knotter 2, spreads out into a circular shape at the end due to the centrifugal force caused by the rotation of the tip side. The bundled culms that fall and are released through the culm are securely erected in the field with the plant base facing down, providing good ventilation and promoting natural drying.

As explained above, according to the bundled culm discharging device of the combine harvester of the present invention, the conveyor chain and the clamping rail, which clamp the tip side of the bundled culm and convey it while leaving the stock side free, are opposed to the conveyor chain. A resistor is installed on the conveying surface of the clamping rail that contacts the tip side of the bundled culm and applies rotational force to it, so that the tip side of the bundled culm contacts the resistor and rotates during transportation. As a result, the bundled culms that are spread out into a large circular shape due to the centrifugal force and are released from the end of transport and fall cannot be reliably placed on the field with the stock side spread out. This improves air permeability and promotes the drying effect.

In the above example, the resistor provided on the clamping rail was formed by a chevron-shaped projection, but it is not limited to such a projection. It may be of any other shape as long as it can be expanded into a shape, and
The number of installations is not limited to one, but may be increased as appropriate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a rear view of the entire device, FIG. 2 is a side view of the same, and FIG. 3 is a partial sectional view of the drive section of the conveyance chain and the auxiliary conveyance chain.
FIG. 4 is a partial plan view of the main part. DESCRIPTION OF SYMBOLS 1... Combine harvester, 2... Knotter, 3... T-shaped protrusion, 4... Conveyance chain, 6... Pinch rail, 6a... Protrusion, 7... Auxiliary conveyance chain, 8... Discharge guide plate.

Claims (1)

[Claims] 1. A knotter is installed at the threshing culm discharge position of the combine, and a conveyor chain and a clamping rail are installed at the bundled culm discharge position of this knotter, which holds the tip side of the bundled culm while leaving the stock side free. In the bundled culm discharging device, the bundled culm discharge device is configured to drop the culm from the end of the conveyance with the plant head down, and discharge the bundled culm standing upright on the field. A bundled culm for a combine harvester, characterized in that it is provided with a resistor that contacts the tip side of the bundled culm to apply rotational force thereto, and uses the centrifugal force to spread the stock side of the bundled culm in a circular shape. Ejection device.