JPS6340111Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, the guide rod that was installed opposite to the conveyance surface of the conveyance chain pivoted only at its base, so the tip side that guides the grain culm can easily move up and down, and the guide rod can move upward from the conveyance chain. Otherwise, there was a drawback that the conveying posture of the grain culm was disturbed due to the grain culm being deviated downward.

In order to eliminate these drawbacks, increasing the contact area of the pivot, inserting a bushing, or attaching a separate vertical movement regulating member would complicate the configuration and increase costs. Therefore, it was not possible to obtain sufficient regulatory effects.

The present invention aims to provide a grain culm guide device for a combine harvester that can reliably prevent the vertical movement of the guide rod while having a simple structure and can be obtained at low cost. In a combine harvester equipped with at least a pair of raking wheels and a conveyance chain extending rearward from one raking wheel, the upper surface of the other raking wheel is covered with a box-shaped guide case, and the raking of the guide case is A long hole is provided in the front peripheral wall near the passage, and the front part of the guide rod along the conveyance surface of the conveyance chain is bent laterally and inserted into the guide case through the long hole. It is characterized in that it is equipped with an elastic device that pivots the section to a vertical support shaft and presses the guide rod against the conveyance chain.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on a machine base having a traveling device, and in front of the threshing device, a reaping section 5 consisting of a cutting blade 2, a cutting body 3, 3, a grain culm lifting frame 4, 4, etc. is mounted so as to be tiltable up and down. Above the cutting blade 2, it is supported by arms 7, 7 erected on the side frames 6, 6 of the cutting frame, support tubes 8, 8, and a floating shaft rotatably installed inside them. A pair of left and right scraping wheels 9, 9 are provided which engage with each other, and one of the scraping wheels 9
The conveyor chain 11 is wound around a sprocket 10 that is integrated with the shaft of
It is driven by the sprocket 15 of No. 4.

Reference numeral 16 denotes a box-shaped guide case that covers the upper surface of the other scraping wheel 9, and a guide flange 1 is provided at the lower edge of the box-shaped guide case.
7, and a long hole 19 is provided extending from the center of the front part of the peripheral wall to the middle part of the part facing the scraping passage 18.

The guide rod 20, which has the guide portion 20a on the distal end side along the conveyance surface of the conveyance chain 11, is curved outward so that the front portion of the guide rod 20 is sequentially retracted from the scraping passage 18. The base portion 20b on the outer side of the portion is connected from the long hole 19 to the guide case 16.
The guide case 16 is inserted into the guide case 16, and further bent toward the rear on the outside side of the guide case 16. Said guide rod 20
The mounting bracket 21 protruding from the bent portion on the outside has a hole in the vertical direction, and the support shaft 22 hanging down from the top plate of the guide case 16 is inserted into the hole of the mounting bracket 21 as shown in FIG. By fixing the guide rod 2
0 is rotatably supported.

Further, the rear end of the rearwardly bent portion of the guide rod 20 is pulled toward the scraping passage 18 by the bullet 23, so that the guide portion 20a of the guide rod 20 is aligned with the conveying surface of the conveying chain 11. The third
As shown in the figure, it is fitted between the upper and lower chain plates.

In the above-mentioned device, the grain culm pulled up by the lifting claws of the grain culm lifting frames 4, 4 is cut by the cutting blade 2, and when the stock base is raked by the left and right raking wheels 9, the guide rod 20 separates the stock base of the grain culm from the raking ring 9 on that side, and removes it from the raking ring 9 on the other side.
It merges with the grain culm that has been raked in, and cooperates with the conveyance chain 11 to pinch and convey it to the rear, and the ear side is
It is transported later by a pair of left and right conveyor belts 24 with lugs.

The guide rod 20 swings back and forth between the position shown by the solid line and the position shown by the chain line in FIG.
Since the guide part 20 is supported at two places by
a moves forward and backward while maintaining a constant height relationship with respect to the conveyance chain 11 without moving up and down.

In addition, the grain stalks held and conveyed by the conveyance chain 11 and the guide rod 20 are handled by the grain clamping conveyance body 2 which is tilted up and down centering on the rear part by the handling depth adjustment lever 25.
6 and the panicle side clamping conveyance body 27 to convey it rearward. The stock base of the grain culm transported in this way is transferred to the feed chain 1a of the threshing device 1 and the pruning rail 1b.
The ears are then inserted into the feed port and threshed.

Since the present invention is configured as described above, the guide rod is simply held in two places by the pivot portion and the long hole, and the amount of grain culm scraped by the scraping wheel varies, and the guide rod is The guide rod does not move up and down with respect to the conveyance chain even if it is displaced far away from or near the conveyance chain, and the raked grain culms can be smoothly and reliably conveyed in a predetermined conveyance posture. It can be delivered to the conveyance device without stagnation.

In addition, since the support means for the guide rod has an extremely simple structure of a pivot and a long hole, it can be obtained at a low cost while ensuring accurate operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side view with the rear part of the combine harvester omitted, Figure 2 is a perspective view of the main parts, Figure 3 is a sectional view of the same, and Figure 4 is a cross-sectional view of the same.
The figure is a perspective view of the guide case. 2... Cutting blade, 9... Scraping wheel, 11... Conveyance chain, 16... Guide case, 19... Long hole, 20
... Guide rod, 22 ... Support shaft, 23 ... Bullet machine.

Claims (1)

[Scope of utility model registration request] In a combine harvester that is provided with at least a pair of raking wheels above the cutting blades and a conveyance chain extending rearward from one raking wheel, the upper surface of the other raking wheel is covered with a box-shaped guide case, and the guide A long hole is provided in the front circumferential wall of the case near the scraping passage, and the front part of the guide rod along the conveying surface of the conveying chain is bent laterally and inserted into the guide case through the long hole, A grain culm guide device for a combine harvester, characterized in that the inserted portion is pivotally connected to a vertical support shaft, and an elastic device is attached for pressing a guide rod against a conveying chain.