Variable vibratory mechanism
AssigneeCaterpillar Paving Products Inc.
InventorDean R. Potts
Life of this patent
Estimating the term…
Abstract
A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the first and second eccentric weights during operation via the inner shaft and outer shaft respectively. A phase control device is operatively connected to the second planetary gear set to index the second eccentric weight relative to the first eccentric weight.
Claims26
A vibratory mechanism comprising:
- a first eccentric weight being rotatably supported within a housing;
- a second eccentric weight being coaxially rotatable with said first eccentric weight;
- a inner shaft operatively connected to said first eccentric weight;
- an outer shaft being coaxially positioned about said inner shaft and operatively connected to said second eccentric weight;
- and
- a gearbox operatively connected to said inner shaft and said outer shaft, said gearbox being adapted to index said second eccentric weight relative to said first eccentric weight.
A work machine, comprising:
- a compacting drum supporting said work machine;
- a vibratory mechanism coaxially positioned within said compacting drum;
- said vibratory mechanism including;
- a first eccentric weight being rotatably supported within a housing;
- a second eccentric weight being coaxially rotatable with said first eccentric weight;
- an inner shaft operatively connected to said first eccentric weight;
- an outer shaft being coaxially positioned about said inner shaft and operatively connected to said second eccentric weight;
- and
- a gearbox operatively connected to said inner shaft and said outer shaft, said gearbox being adapted to index said second eccentric weight relative to said first eccentric weight.
A method for operating a vibratory mechanism of a work machine having a gearbox for adjusting a vibration amplitude, the gearbox includes an inner shaft connected with a first eccentric weight and an outer shaft, surrounding at least portion of the inner shaft, is connected with a second eccentric weight, said method comprising:
- operating the gearbox to change a phase difference between the first eccentric weight and the second eccentric weight to change the vibration amplitude.
Dependencies are inferred from the claim text.