JPH0135636Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a raking conveyor belt with protrusions that extends from above to the front side of both raking foils arranged in parallel above the cutting blade in a V-shape that opens in the front. The present invention relates to a drive device for the above-mentioned raking conveyance belt in the reaping section of a combine harvester in which a grain culm lifting device is provided in a backwardly inclined position above the cutting blade.

Conventionally, the two raking conveyor belts, which are opened in the front and extend in a V-shape, are driven by vertical shafts that are coaxial with the raking wheels that are arranged parallel to each other on the lower side. The power extracted from the bottom was used as the driving source. Therefore, the lower structure of the reaping section becomes complicated, and although it is preferable to always keep the conveyance speed ratio of the ear tip conveying belt and both raking conveyance belts constant, it tends to fluctuate, causing disturbances in the conveyed grain culm. be.

The present invention is proposed with the aim of eliminating the above-mentioned drawbacks of the conventional technology, simplifying the structure, and providing the device at low cost.

The following will be explained with reference to the embodiments shown in the drawings.
This combine has a threshing section 1 mounted on a traveling chassis, and a reaping section 2 installed in front of the threshing section 1. As the traveling chassis advances, the reaping section 2 reaps the vertical grain culms. The structure is such that grain culms are sequentially changed to a horizontal position and successively threshed in a threshing section 1.The reaping section 2 has grass cutting boards 3 arranged in parallel in front and two grain culm pulling devices 4 behind it. A cutting blade 6 is installed laterally across each grass dividing rod 5 extending to the rear of each grass dividing board 3, and a mowing blade 6 is installed on the upper side of the cutting blade 6. Both star-shaped scraping foils 7, 7a that mesh with each other are arranged side by side. Above both scraping wheels 7, 7a are pulleys 9, 9a on the same vertical shaft 8, 8a, respectively.
small pulleys 10, 1 which are fitted and pivoted diagonally forward on the front outside of both pulleys 9, 9a.
0a and the pulleys 9, 9a, respectively, are wound with scraping conveyance belts A, Aa, and both scraping conveyance belts A, Aa are covered with covers 11, 11a.
Aa and the covers 11 and 11a are formed in a V-shape that opens forward.

Reference numeral 12 denotes an ear tip conveying belt which is installed diagonally from above the rear part of the scraping conveyor belt A toward the grain culm supply port 13 of the threshing section 1, and supplies the grain culm ears to be leveled by the grain culm pulling device 4 to the grain culm. The husks are conveyed to the mouth 13, and 14 is the culm conveying belt from the rear side of the meshing part of both scraping wheels 7, 7a to the threshing section 1.
The feed chain 15 is installed obliquely toward the starting end, and the above-mentioned ear tip conveying belt 12 and this culm base conveying belt 1
In the process of conveying the vertical grain culm backwards, the vertical grain culms are successively turned into a horizontal state and fed to the threshing section 1 by the cooperation of the four parts.

Reference numeral 15 denotes a cover that covers the tip conveying band 12, and a starting edge 15a is formed to be inclined in the same direction as the working side of the cover 11.

16 is an endless band such as a chain, and is the above-mentioned ear tip conveying band 1.
The chain foil 18 is fitted onto the driven vertical shaft 17 installed at the starting end of the chain wheel 20, and the vertical shaft 8 is wrapped around the chain foil 20, which is fitted onto the extending portion 19 extending upward through a universal joint (not shown). It is transmitted from the tip conveying belt 12 to the scraping conveying belt A at a constant speed reduction ratio.

Note that 21 is a stay that supports the shaft portion of the extending portion 19, and 22 is a boot that covers the universal joint.

Therefore, the vertical shaft 8 is driven via its upwardly extending portion 19 from the starting end side of the ear tip conveying belt 12 while constantly maintaining a constant speed reduction ratio.
The scraping conveyor belt A rotates, and the vertical shaft 8a rotates due to the engagement of the scraping wheels 7 and 7a, and the scraping conveyor belt Aa rotates at the same speed as the machine moves forward. The culm side of the grain culm to be harvested by the cutting blade 6 is raked toward the center by both raking conveyor bands A and Aa, and both raking foils 7 and 7a are raked into the culm root conveying belt 14 between them. The ears are transferred from the grain culm pulling device 4 to the ear tip conveying belt 12, where they are smoothly brought to the center side along the starting edge 15a of the cover 15 that covers this ear tip conveying belt 12, and then conveyed to the rear. The threshing section 1 is brought into a horizontal state in cooperation with the culm conveying belt 14.
It supplies the

As described above, the present invention has a raking conveyor belt with protrusions extending from above to the front side of both raking foils arranged in parallel above the cutting blade in a V-shape opening in front, and furthermore, In the reaping section of a combine harvester in which a grain culm pulling device is installed upwardly in a rearward tilted position, the starting end of an ear tip conveying belt that inherits and conveys rearward the ears of grain culms that are arranged by the grain culm lifting device of the raking conveyor belt. Because it is configured to be driven directly from the cutting section through the endless band, compared to the conventional system in which the motive power led to the lower part of the cutting section is used as the drive source to rotate the raking conveyance band, the starting end side of the ear tip conveyance band is Because it is driven directly from the tip through the endless band, the drive system can be simplified and provided at low cost without complicating it.Moreover, even if the rotational speed of other drive parts changes due to the driver's operation, the tip conveying band and raking can be maintained. The reduction ratio with respect to the conveyance belt is always unchanged, and the harvested grain culms are raked in and conveyed smoothly and reliably.

[Brief explanation of the drawing]

The drawings are for illustrating the embodiment of the present invention, and FIG. 1 is a plan view showing the whole, and FIG. 2 is a perspective view of the main part. Explanation of symbols for main parts, 6... mowing blade, 7, 7a...
raking foil, A, Aa... raking conveyance belt, 4... grain culm pulling device, 2... reaping section, 12... ear tip conveyance belt, 16... endless belt.

Claims (1)

[Scope of utility model registration request] Both scraping wheels 7, 7 arranged in parallel above the cutting blade 6
A scraping conveyor belt A with protrusions from above a to the front side,
Aa is extended in a V-shape that opens forward, and the cutting blade 6 is
In the reaping section 2 of the combine, in which the grain culm pulling device 4 is provided in a backward-inclined position above, the raking conveyance belt A,
The combine is characterized in that it is driven directly via an endless band 16 from the starting end side of the ear tip conveying band 12 which inherits the ears of the grain culms that are aligned by the grain culm pulling device 4 and conveys them rearward. raking conveyor band drive device in the reaping section.