Vibratory mechanism
AssigneeRayGo, Inc.
InventorRaymond J. Stanton
Life of this patent
Estimating the term…
Abstract
A road compacting drum is equipped with a dual amplitude, rotational, vibratory mechanism. A shaft rotatably mounted on the drum supports eccentric weights. Casings secured to the shaft adjacent the weights have chambers accommodating fluent mass. The fluent mass comprise metal members, as steel balls, shot or liquid metal, that move to a first location in the chamber upon rotation of the shaft in one direction to increase the amplitude of the vibration of the shaft and drum. The fluent mass flows to a second location in the chamber in response to rotation of the shaft in a direction opposite the one direction to generally balance the shaft to reduce the amplitude of vibration of the shaft and drum.
Claims25
A vibratory mechanism for vibrating a member comprising:
- a shaft, means for rotatably mounting the shaft on the member, means for selectively rotating the shaft in opposite circumferential directions, weight means eccentrically mounted with respect to said shaft for rotating therewith to vibrate said shaft when rotationally driven, and means mounted on the shaft having a fluent mass which upon shaft rotation in one direction moves to a first location adjacent the weight means to augment the eccentric distribution of said weight means thereby producing high amplitude vibration of the member and upon rotation of the shaft in the opposite direction said fluent mass moves from the first location to a secod location spaced from the weight means which tends to balance the eccentricity of the weight means to produce low amplitude vibration of the member.
A drum and vibratory mechanism for a road compacting machine comprising:
- a generally cylindrical shell having opposite ends, end walls secured to opposite end portions of the shell, a shaft located within said shell between said end walls, means rotatably mounting the shaft on said end walls, drive means operable to selectively rotate the shaft in opposite directions, weight means secured to said shaft, said weight means having an eccentric first mass whereby upon rotation of said shaft said first mass causes the shaft to vibrate, means mounted on the shaft having a fluent second mass which upon rotation of the shaft in one direction moves the fluent second mass to a first location adjacent the weight means to augment the eccentric distribution of the first mass thereby producing high amplitude vibration of the shaft and shell and upon rotation in the opposite direction said fluent second mass moves from the first location to a second location generally diametrically spaced from the weight means to generally balance the shaft thereby producing low amplitude vibration of the shaft and shell.
Dependencies are inferred from the claim text.