Harvesters – Seed gatherers or strippers – Fixed comb
Patent
1998-04-22
1999-11-02
Shackelford, H.
Harvesters
Seed gatherers or strippers
Fixed comb
56220, 56364, A01D 4106
Patent
active
059747722
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to the agricultural machinery industry, specifically, to systems used for harvesting standing crops by combing.
PRIOR ART
In combing units, one of the places where harvested grain wastage occurs is the zone in which the heap goes down the working combing element and the combed mass is then moved by the working conveying elements. The proposed invention is aimed at solving the given problem.
In combing the plants by combing units provided with active working elements, the stalk break mainly occurs at the base of the ear, panicle or bean where the stalk has the minimum section, however, a certain portion of plants gets broken in the other weakened places of the stalk. The long, broken portions of stalks are simultaneously caught on several rows of the combing teeth and, as a rule, poorly go down the teeth of the working combing element, which results in the stalk winding on it. Besides, the stalks hang over the receiving-chamber rim and are dumped onto the field surface, which causes additional wastage.
The long, broken portions of stalks are simultaneously caught on several rows of combing teeth and, as a rule, poorly go down the working combing-element teeth, which results in the stalk winding on the working combing element. Besides, the stalks hang over the receiving-chamber rim and are dumped onto the field surface, which causes additional wastage. To prevent the stalk from winding, ensure stalk removal from the combing teeth and prevent the heap hanging over the receiving-chamber rim, use is made of the various removal devices.
Known in the present state of art is the unit for combing standing plant seeds (USSR Inventor's Certificate No. 1648275, IPC(5): AOID 41/08), comprising the combing drum with teeth, the fan located inside the drum, with the pipeline being installed behind them, and the rotary brushes for cleaning the teeth.
The disadvantages of such a combing unit are, first, the disturbance of the production process because of winding of the stalks on the brushes and, second, the complexity of the design of the combing drum accommodating the rotary fan with fixed guard; the drum, fan and brushes have different speeds and direction of rotation. Besides, the power intensity of pneumatic devices is higher than that of mechanical devices.
Known in the present state of art is the combing unit for harvesting agricultural standing plants (USSR Patent No. 1812926, IPC(5): AOID 41/08), comprising the combing drum closed from above and on the sides with the casing, with the trough located in close proximity of the teeth of the drum, in its rear section; the trough accommodates the auger for the lateral movement of the combed mass.
The disadvantage of such a unit is the fact that it is impossible to arrange in the optimum way the combing drum and collecting chamber for heap, formed by the side members, roof and trough with auger. To ensure heap collection and avoid wastage, it is necessary to provide certain relation between the auger diameter and distance from the upper rim to the trough bottom (the trough depth). To ensure a more efficient retrieval of the combed heap, it is necessary to arrange the rim of wall 9 (FIGS. 1 through 10 of the patent) as low as possible, but in this case, the auger is arranged in the very shallow trough, and since it rotates opposite to the combing drum, the heap is thrown over to the drum which dumps the heap onto the field surface. The attempts to deepen the trough on the account of its lowering below the combing drum result in the fact that the trough bends down the stalks of the combed plants and brings them from the operative zone of the combing-drum teeth, especially on the lodged plant stand.
The value of angle of inclination of the trough front rim is also not determined in this combing unit, though the value of this angle has a significant effect on collection and transportation of the heap. Besides, when the trough design provides for the rigid upper rim of the trough front wall, the combed plant stalks hang over th
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Chuksin Petr Ivanovich
Golanov Alexandr Timofeevich
Kuznetsov Mikhail Vasilevich
Losev Vasily Ivanovich
Molotkov Leonid Nikolaevich
Ingemar Bjurenvall
Shackelford H.
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