Vibration control for mowing machine

Details Vibration control for mowing machine Vibration control for mowing machine

1980-04-25

1981-10-20

Peters, Jimmy C.

Cutlery

Cutting tools

With blade moving means

56 127, A01D 3500

Patent

active

042952727

ABSTRACT:
In a mowing machine having an engine for driving a rotary blade via a centrifugal clutch, a shaft and a reduction gear assembly, the outer diameter of the shaft is selected such that the torsional natural vibration frequency of the rotational system extending from the engine to the rotary blade is less than one third of a rotational frequency above which the centrifugal clutch starts transmitting the engine output torque to the shaft. As a result, the torsional natural vibration frequency of the rotational system does not equal the rotational frequency or the half or one third of the rotational frequency of the engine so that undesirable resonance phenomenon will not occur.

REFERENCES:
patent: 3219129 (1965-11-01), Yamada
patent: 3346955 (1967-10-01), Beneke
patent: 4006528 (1977-02-01), Katsuya
patent: 4122601 (1978-10-01), Katsuya
patent: 4179805 (1979-12-01), Yamada
patent: 4236310 (1980-12-01), Muller

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