редуктор flender H2-HV-3-D Helical gear reducer H2

Flender/Flender Gear Units/Helical gear reducer H2

8 /). The threshing drum mounted with large number of wireloops at its periphery and at regular intervals shatters grain by impact and combingactions. Most grains from paddy are detached when the tiller ends of crop bundle is heldover the rotating cylinder along the motion direction. One man can thresh about 1.5.0q/day but additional labor is required to separate grain from chaff and other debris. Toincrease the capacity, farmers engage four to six laborers for threshing over 1.5- to 2.4-mlong threshing cylinder made locally and operated by 3.7-kW diesel engine through at belt. An additional two- to four men are engaged for the supply of crop bundles near the thresher and grain separation. This method in contrast with manual threshing,therefore, saves time and energy, and at the same time reduces human drudgery to largeextent. 9 Datta 3.3 Power Threshing The prime functions of threshing units are to detach sound grain kernels and kernels from husk or pod; separate them from broken stalks, leftovers, and chaffs; convey and deliverthe sound and unbroken grains or seeds, free from foreign materials, to delivery outlet and bag the grains. Because operations such as detachment, separation, conveying, and elevating of grains or kernels are done simultaneously and in sequence, prime-moverwith capacity in the 3.5- to 3.0-kW range is necessary, depending on the crop parameters,type, and size of threshing cylinder and feed rate. Power-driven threshers are very similarto the threshing units used in combine harvester. The large-sized threshers are mostlythrow-in type (Fig. and are provided with belt conveyor as self-feeder to the threshing cylinder on which the workmen, uniformly and evenly, place the crop material. Throw-in types are conventionally axial-ow threshers that not only detach cereal and pulse grainor seeds by impact and combing actions, but also break the leftover straw during their owaxially against the louvers provided on the inner surface of the cyl