Variable speed chain wheel assembly

Abstract

The invention discloses a variable speed chain wheel assembly. The variable speed chain wheel assembly comprises a gearbox and an output shaft being mounted with vehicle wheels, and the output shaft is driven to rotate by the gearbox. The variable speed chain wheel assembly is characterized in that a first driving chain wheel and a second driving chain wheel sleeve and are fixed to a rotary shaftof the gearbox, a large chain wheel and a small chain wheel sleeve and are fixed to the output shaft through bearings, the large chain wheel is driven by the first driving chain wheel to rotate through a chain, and the small chain wheel is driven by the second driving chain wheel to rotate through a chain; a synchronous shafting mechanism performing shafting after prompting the small chain wheel or the large chain wheel to rotate synchronously is installed on the output shaft, the synchronous shafting mechanism is limited on the output shaft in a displacement mode, and the synchronous shaftingmechanism is located between the large chain wheel and the small chain wheel; and a clamping piece on the synchronous shafting mechanism is connected with the large chain wheel or the small chain wheel in a buckling mode, and the output shaft rotates under the rotating of large chain wheel or the small chain wheel. The load capacity is increased under the condition of not changing maximum vehiclespeed of a motorbike.

Description

technical field [0001] The invention relates to the technical field of a gear-shift speed-regulating mechanism applied to a motorcycle, in particular to a speed-change sprocket assembly. Background technique [0002] Most of the motorcycles (non-pedal motorcycles) on the market are transmission arrangements consisting of a speed change gearbox and a pair of sprocket wheels (final transmission). Because motorcycles rotate at a higher speed than automobiles and the speed range of maximum torque is relatively high, the starting torque of motorcycles is small, and the engine power of ordinary motorcycles is limited, and the transmission ratio is also limited, so manufacturers often use maximum torque (for loads) ) and the highest speed to choose a suitable point. Therefore, the maximum speed of motorcycles is often not too high in order to obtain as much torque as possible, and vice versa; and the utilization space of motorcycles is limited, so the gearbox cannot be made too la...

AI Technical Summary

Problems solved by technology

Therefore, the maximum speed of motorcycles is often not too high in order to obtain as much torque as possible, and vice versa; and the utilization space of motorcycles is limited, so the gearbox cannot be made too large, which means that the size of the transmission gear is limited, and the sprocket ratio It is fixed again, and the transmission ratio is limited

Therefore, it is not possible to increase the load capacity on a motorcycle without changing the top speed

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