JPS587248B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a waste straw transport mechanism in a combine harvester that takes over waste straw carried out from a threshing device.

In such a combine harvester, there is a desire to release waste straw to the center of the width of the machine during split harvesting, and to release it as close to the already cut field side as possible during reciprocating ridge work.

In other words, for example, when cutting two stem culms by reciprocating mowing and discharging them to the center of the width of the machine, when reaping one stem culm in the final process, the left and right crawler traveling devices generally cut the stump. It is arranged so that it straddles the two stem culms so that it does not run over the top of the stems, so when harvesting the last one, the crawler running device on the inside of the machine removes the culms that were released during the previous cutting process. The vehicle will be driven on top of the waste straw that has been removed.

When collecting the discharged waste straw, it stops when you step on it, so in the previous process, there are cases where you want to release the waste straw as close to the mown field as possible.

As a means to satisfy this demand,
As shown in Publication No. 27, a method of changing the relative position of the waste straw conveying device with respect to the machine body may be considered, but this would change the relative posture of the threshing section feed chain and the waste straw transfer device, and the removal of straw receiving There was a problem where the inheritance status was changed, resulting in unstable inheritance.

The present invention solves such problems and changes the waste straw discharge position to a desired position by making the waste straw transfer state almost constant and stable transfer regardless of the posture of the waste straw conveying device. The present invention aims to provide a waste straw conveying mechanism in a combine harvester that can be used in a combine harvester.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

FIG. 1 shows a plan view of a combine harvester, in which a reaping pretreatment device 1, a threshing device 2, and a dropper 3 are provided in order from the front of the machine toward the rear.

A feed chain 4 is provided on one side of the threshing device 2 to support and convey the grain culm near the stock end from the front to the rear, and the side of the machine body on the side of the feed chain 4 is used as uncut land. It is configured to perform round mowing.

In addition, as shown in FIG. 2, a vertical shaft 6 which is driven and rotated by an appropriate drive mechanism with the point near the waste straw outlet 5 of the threshing device 2 and the point on the tip side of the waste straw as the rotation axis X is connected. A frame 7 which is V-shaped in plan view is attached, and a waste straw conveying device 8 having a partially arcuate shape centered on the rotation axis X is held on this V-shaped frame 7.

The waste straw conveying device 8 includes a chain 9 with protrusions and a clamping rod 1.
0, and a sprocket 12 is configured to be drivable via a transmission shaft 11 installed within the V-shaped frame r.

A front waste straw dropper 3 is attached to an end of the waste straw conveying device 8.

The operation will be explained using the above configuration.

The straw removal conveying device 8 is moved around the rotation axis X to change the position of the removal straw dropper 3 to a desired position, thereby changing the removal position of straw removal.

In this case, the starting end portion 8 of the waste straw conveying device 8 is overlapped with the waste straw conveying path portion 4a on the terminal end side of the feed chain 4 and the conveying path 8a of the waste straw conveying device 8 in a certain range.
The relative position of b and the feed chain waste straw carrying-out path portion 4a is changed, but the waste straw conveying device 8 rotates around the rotation axis X near the tip of the waste straw. The inherited state of the feed chain 4 and the waste straw conveying device 8 is such that the tip portion is placed on the waste straw outlet 5,
Since there is no need to change the posture of the straw removing straw, which rotates around the tip, the inheritance condition can be kept approximately constant, and stable inheritance can be achieved.

The sprocket 12 and idler wheel 13 of the chain 8 with protrusions of the straw removal conveying device 8 are held almost horizontally, and the chain 9 with protrusions is wound horizontally, so that the working path side thereof is rotated. It may be curved around the axis X.

In this case, it is preferable to provide a cover to cover the non-working path of the chain 9 with protrusions.

In summary, the waste straw conveying mechanism in the combine harvester according to the present invention includes a partially arc-shaped waste straw conveying device 8 with the tip side as the center located outside the waste straw outlet of the threshing device 2, and the waste straw conveying device 8 is provided with The starting end of the path 8a is overlapped in the conveyance direction with the waste straw conveyance path portion 4a on the terminal end side of the feed chain 4, and at this overlap point, it is possible to take over and convey the waste straw on the stock side, and also to transfer the waste straw. The entire forward conveyance path of the device 8 can be changed and adjusted along a constant arcuate path with the center of curvature at the tip side, thereby making it possible to change and adjust the end position of the feed by the waste straw conveying device 8. shall be.

That is, since the removed straw conveying device 8 that changes its attitude with respect to the feed chain 4 is formed in a partial arc shape with the center on the tip side of the removed straw, regardless of the attitude change of the removed straw conveying device 8, , the straw removal posture does not change.

Therefore, the transfer state can be kept approximately constant, and the end position of the waste straw conveyance can be adjusted in a stable transfer state.

[Brief explanation of drawings]

The drawings show an embodiment of the waste straw conveying mechanism in a combine harvester according to the present invention, FIG. 1 is a plan view of the combine, FIG. 2 is an enlarged plan view of the main parts, and FIG. 3 is a plan view showing the operating state. It is. 2... Threshing device, 4... Feed chain, 4a... Carrying out path portion, 8... Discarded straw conveying device, 8a... Conveying path.

Claims (1)

[Claims] 1. A partially arc-shaped waste straw conveying device 8 centered on the tip side of the waste straw is arranged outside the waste straw outlet of the threshing device 2, and the starting end of the conveyance path 8a by this waste straw conveying device 8K is connected to a feed chain. 4 is overlapped in the conveyance direction with the waste straw conveyance path portion 4a on the terminal end side of the waste straw, so that the transfer of the waste straw stock side can be carried out at this overlapping location, and the entire forwarding path of the waste straw conveying device 8 is connected to the A waste straw installed in a combine harvester, characterized in that the position can be changed and adjusted along a constant arcuate path with the tip side as the center of curvature, thereby making it possible to change and adjust the end position of the feed by the waste straw conveying device 8. Straw transport mechanism.