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Ketten- und Ritzelverschleiß: Unterschied zwischen den Versionen

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Due to the slope of the tooth surface, chain tension is pulling the rollers outward, parallel to the tooth surface, as well as forward. Each roller can roll outward on the tooth surface, though with some internal friction. The roller which is about to disengage from the sprocket is held down by the link behind it, and so forth. Force which cannot be taken up by each roller is passed to the next roller, and so on, back around the sprocket -- in tension from each link pin to the previous one. The sum of all the forces which sprocket teeth apply to the rollers must be in the opposite direction from the chain pull, and in line with the chain.
Wegen der Neigung der Zahnfläche zieht die Kettenspannung die kettenrollen sowohl nach Außen entlang der Zahnoberfläche als auch noch vorne. Jede Rolle kann für sich auf der Zahnoberfläche nach Außen rollen, wobei der interne Reibungswiderstand arbeitet. Eine Rolle, die kurz davor ist, sich von einem Zahn zu lösen, wird vom dahinter liegenden Kettenglied unten gehalten und so weiter. Kräfte, die von einer Rolle nicht mehr aufgenommen werden könne, werden an die dahinter liegende Rolle weitergegeben und so weiter einmal um das Ritzel herum. So läuft die Zugkraft von Kettenniet zu Kettenniet "rückwärts". Die Summe der Kräfte, die die Ritzelzähne auf die Rollen ausübt wirkt rückwärstgerichtet entgegen der Richtung der Kettenspannung entlang der Kette.
 
 


For the force on a new sprocket to be in line with the chain, the first few rollers (fewer with a smaller sprocket) must take most of the load. As mentioned, the first roller pushes the sprocket downward. A few rollers behind the first one, depending on tooth form and sprocket size, may also push the sprocket downward. At some point depending on the tooth form, the changing angle around the sprocket allows rollers to begin pushing upward to cancel the downward push from the first few rollers. Farther back yet, a roller or rollers may be completely disengaged from the backs of the teeth, possibly resting in the valleys between teeth. These rollers can only push inward radially. There is no chain tension at this location beyond what is matched by tension from the return run and/or due to friction. And farther back yet, rollers approaching the return run of chain may be engaging the opposite faces of the teeth, depending on the width of the teeth, tension of the return run and chain wear.
For the force on a new sprocket to be in line with the chain, the first few rollers (fewer with a smaller sprocket) must take most of the load. As mentioned, the first roller pushes the sprocket downward. A few rollers behind the first one, depending on tooth form and sprocket size, may also push the sprocket downward. At some point depending on the tooth form, the changing angle around the sprocket allows rollers to begin pushing upward to cancel the downward push from the first few rollers. Farther back yet, a roller or rollers may be completely disengaged from the backs of the teeth, possibly resting in the valleys between teeth. These rollers can only push inward radially. There is no chain tension at this location beyond what is matched by tension from the return run and/or due to friction. And farther back yet, rollers approaching the return run of chain may be engaging the opposite faces of the teeth, depending on the width of the teeth, tension of the return run and chain wear.
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