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От
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Vadim
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К
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VLADIMIR
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Дата
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25.12.2001 14:28:15
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Рубрики
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WWII; Танки;
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Re: Вопрос по...
Приветствую
>Я тут на работе стал присматриваться к бульдозеру (Катерпиллер), и увидел вдруг, что у него гусница как у Шермана, а именно: ведущая (?) звездочка сверху.
Не всеx. Нек. модели D-4, D-7.. ( http://www.machinerytrader.com) делают в 2-x вариантаx: High Drive и обычное расположение ведущ. катка
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High Drive
Careful observers will note that for quite a few years now most Cat brand dozers have been of the High Drive variety in which the drive sprocket is located somewhat forward and above the track line creating a triangular shaped track. This simplifies the logistics of drive train design and improves ground clearance because final drive gears don't need to stick down to within a few inches of the ground, but compounds issues of track wear as the tracks have to bend 3 times for every revolution of the track instead of 2. To compensate for this problem Cat included the sealed and lubricated tracks which is quite a change from the traditional tracks that were just steel on steel linkages. Nevertheless, tracks cost serious money are represent a major operating expense item on any track machine.
http://www.vannattabros.com/dozer4.html
