Powder metallurgy gears include: bevel gear, dual-gear, gear box gears, planetary gears, ring gear, rack, sector gears, bevel gears, spur gears, sun gear, helical gear, gear shaft, flat gears, spur gears, double layer gear, synchronous pulley, helical gear, sprocket, ratchet, multi-gears, micro-gear, small modulus gear, special gear, differential bevel gear, reducer gears, variable speed gear motor, all kinds of precision gears.

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Ratchet wheel stop is used to stop the converse motion, and it was decided by the pressure the gear bears.

棘輪停止器用來防止逆轉(zhuǎn)欧美日韩精品综合在线一区二区，根據(jù)所受的彎矩和壓力国模自拍日韩在线播放网站，對(duì)其進(jìn)行了設(shè)計(jì)。

The main body mechanism includes casing, screwed cover plate, upper lifting hook, non-return gear set and chain wheel set inside the casing, and cable clamping board assembly to avoid outer separation of the chain. The ratchet spanner mechanism has ratchet handle assembly fitted to the gear shaft, and the ratchet handle component of the mechanism is patched with gear shaft.

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A new-type bike features that its pedal crank has an arc rack bar acting on the ratchet gear in single direction and in turn driving the drive chain wheel, a reset unit composed of crank mechanism is used to make left and right pedal cranks be pedaled alternatively, and its front movable saddle plate is connected via connecting rod to pedal crank for making rider comfortable. Its advantages are high drive performance and efficiency and saving labour.

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