Forage harvester
阅读：948发布：2021-08-22
专利汇可以提供Forage harvester专利检索，专利查询，专利分析的服务。并且A forage harvester having an upwardly and rearwardly inclined platform and a reel sweeping over the platform to move the crops from a cutter at the front edge of the platform to associated mechanism at the rear of the platform. The platform is provided with a plurality of apertures in the form of louvers or corrugations or apertured riffles which are arranged to prevent crops from falling through or plugging the apertures while permitting sand and dirt to sift through the platform.，下面是Forage harvester专利的具体信息内容。
1. A harvesting machine comprising an elongated inclined platform having a forward edge and having an upper crop supporting surface sloping upwardly and rearwardly therefrom to an upper terminal rear edge, cutting means at said forward edge for severing crops, said platform adapted to be positioned with said forward edge adjacent to the ground for severing the crops close to the ground and incidentally scooping dirt and the like onto the platform surface, means operating above the platform for raking through the aggregate of crops and dirt for conveying the same upwardly and rearwardly thereon, and means providing a plurality of individual perforations in the platform spaced apart transversely of the direction of movement of the machine and having inlets oriented upwardly of the platform for sifting the dirt out of the crops onto the ground attendant to the jiggling of the crops from vibrations of the machine and bouncing over the field and the agitation of the crops pursuant to said means raking therethrough.
2. The invention according to claim 1, wherein said raking means comprises a portion of its sweep in an upward and rearward direction in an area between the front and rear edges of the platform, and said perforations disposed at said portion of the sweep whereby the crops are pitched over said perforations and prevented from sliding down into the same.
3. The invention according to claim 1 wherein said means providing said perforations comprises a plurality of louvers sloping upwardly and rearwardly above the upper surface of said platform.
4. The invention according to claim 1 wherein said means providing perforations comprises at least one riffle having a vertical section with apertures therein.
5. The invention according to claim 1 wherein said means providing said perforations comprises a transversely corrugated rear section providing a plurality of channels elongated generally parallel with the flow of cut crops thereon, and a front section overlaying the forward end of the rear section and providing a dirt discharge region therebeneath and a crop transfer area from the cutting means to the rear section.
6. The invention according to claim 5 and said rear section having a generally flat rear portion and said channels shallowing out to said rear portion.
7. The invention according to claim 1 and said means providing perforations comprising a series of V-shaped depressed sections in the platform having their apices directed forwardly and providing upwardly directed peaks above the crop supporting surface of the platform.
8. An inclined dirt-sifting platform for a harvester movable in a forward direction and over which an aggregate of cut crops, dirt and the like are conveyed from a forward lower edge to an elevated rear edge, the improvement comprising means providing a series of individual passage means open toward said rear edge and having an exit beneath the platform whereby crops being conveyed on the platform are moved away from the passage means and dirt and the like are caused to gravitate beneath the crops and exit through the passage means, said passage means spaced apart transversely of the direction of travel of the harvester.
9. The invention according to claim 8 wherein said platform has a relatively smooth upper faced front section and a transversely corrugated rear section and said front section has a rear edge terminating in an area intermediate the front and rear edges of the platform and said rear section has a front edge portion underposed with respect to said rear edge of the front section.
10. The invention according to claim 8 and said platform having intermediate its front and rear edges a series of louvers raised from the plane of the platform and providing upwardly and reaRwardly sloping upper areas.
11. The invention according to claim 8 and said platform having at least one riffle comprising a generally vertical web segment, a diagonal segment extending upwardly and rearwardly from the lower edge of the web segment and said passage means located in said vertical web segment.
12. The invention according to claim 8 and said platform having a series of depressed segments shallowing out toward the rear edge of the platform and having forward edges defining the lower and side margin of the passage means.
13. The invention according to claim 8 and said platform having front and rear sections imbricately arranged and defining said passage means between adjacent portions thereof.
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