Method and apparatus for the vibratory tamping of railway tracks

Details Method and apparatus for the vibratory tamping of railway tracks Method and apparatus for the vibratory tamping of railway tracks

1976-03-31

1978-09-05

Hoffman, Drayton E.

Railways

Track layers

Tamper

104 10, E01B 2716

Patent

active

041111290

ABSTRACT:
The present invention relates to a method of an apparatus for tamping the ballast of a railroad track in which a vibration imparting tamping means is inserted into the ballast adjacent a tie to be tamped and the vibration of the tamping means is increased in frequency until it imparts a vibratory excitation to the ballast of between 55 and 75 Hz producing a resultant force directed at an angle towards the underside of the tie to be tamped, whereby to consolidate the ballast beneath and adjacent the tie during the excitation period and thereafter reducing the vibration to below 55 Hz. and withdrawing the tamping head from the ballast.

REFERENCES:
patent: 3012516 (1961-12-01), Alleman
patent: 3177813 (1965-04-01), Stewart
patent: 3387567 (1968-06-01), Reynolds
patent: 3608496 (1971-09-01), Schenkir et al.
patent: 3621786 (1971-11-01), Joy
patent: 3735708 (1973-05-01), Plasser et al.
patent: 3797397 (1974-03-01), Eisenmann et al.
patent: 3807311 (1974-04-01), Plasser et al.
patent: 4010692 (1977-03-01), Goel

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