Railways – Track layers – Distributers
Patent
1988-05-20
1990-01-09
Cherry, Johnny D.
Railways
Track layers
Distributers
104 9, 104 12, E01B 2910
Patent
active
048920401
ABSTRACT:
In a mobile machine for tamping ballast under ties of a railroad track, which comprises a machine frame, spaced undercarriages supporting the machine frame for mobility on the railroad track in an operating direction, and a ballast tamping assembly mounted on the machine frame and comprising a vertically adjustable tamping tool carrier, a drive for vertically adjusting the tamping tool carrier, pairs of vibratory and reciprocatory tamping tools immersible in the ballast upon vertical adjustment of the tamping tool carrier, and drives for vibrating and reciprocating the tamping tools: a first device associated with the ballast tamping assembly for gripping and transversely positioning a respective one of the ties, the first device including a drive for vertically adjusting the device, and a second device operable independently of the first device for transversely displacing a respective one of the ties, the second device including a drive for vertically and transversely adjusting the second device.
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patent: 4476786 (1984-10-01), Theurer
patent: 4534295 (1985-08-01), Theurer
Cherry Johnny D.
Franz Plasser Bahnbaumaschinen-Industrie GmbH
Kelman Kurt
Pape Joseph D.
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