Torsional vibration isolating motor mounting arrangement and met

Details Torsional vibration isolating motor mounting arrangement and met Torsional vibration isolating motor mounting arrangement and met

1976-06-18

1978-02-28

Foss, J. Franklin

Supports

Pipe or cable

Extending through plate

310 91, 417363, F16F 1504, F16M 1104

Patent

active

040761975

ABSTRACT:
Motor mounting system is designed so that the torsional mode resonant or natural frequency is less than twice the frequency of the motor power supply divided by the square root of two (.sqroot.2). The illustrated mounting arrangements are "soft" with respect to torsional mode vibrations, and yet are "stiff" with respect to axial and tilting mode vibrations. In one arrangement, lugs are formed preferably from a tough and strong sheet or strip material with means which may be in the form of tuning apertures being provided for promoting flexure without objectably compromising lug strength for axial loading and with the tuning means preferably selected so that the cumulative effective spring constant of the mounting lugs will be less than the quantity (2.84.times.Ip.times.10.sup.5). Also illustrated are mounting band members and torsionally flexible arms that interfit one with another in a slotted interrelationship so as to assure motor support and minimize the degree of weld or other fastener strength that would otherwise have to be provided between the arms and motor.

REFERENCES:
patent: 2731193 (1956-01-01), Lall et al.
patent: 2976352 (1961-03-01), Atalla
patent: 2977043 (1961-03-01), Scheldorf
patent: 3059250 (1962-10-01), Mayer
patent: 3145910 (1964-08-01), Jolly
patent: 3317124 (1967-05-01), Morrill
patent: 3584469 (1971-06-01), Butts
patent: 3746894 (1973-07-01), Dochterman
patent: 3773285 (1973-11-01), Morrill
patent: 3790114 (1974-02-01), Italiano
patent: 3830595 (1974-08-01), Carpenter

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