Directional vibration control apparatus for compactor drum with single eccentric

A tunable vibration absorber, TVA, for a vibratory compactor machine comprising:

• a frame mounting structure that is configured to mechanically interface with a frame of the vibratory compactor machine to provide a fixed attachment of the TVA to the frame of the vibratory compactor machine;
• a TVA carrier that extends from the frame mounting structure into an interior portion of a drum of the vibratory compactor machine;
• a resilient element that includes a first portion that is fixedly attached relative to the TVA carrier and a second portion that includes a degree of freedom of movement relative to the TVA carrier;
• and
• a mass that is attached to the second portion of the resilient element and that includes the degree of freedom of movement relative to the TVA carrier,
• wherein the resilient element comprises a leaf spring, wherein the second portion of the resilient element comprises a plurality of ends of the leaf spring that are opposite one another, wherein the mass comprises first mass that is attached to a first one of the plurality of ends of the leaf spring and a second mass that is attached at a second one of the plurality of ends of the leaf spring.

A tunable vibration absorber, TVA, for a vibratory compactor machine comprising:

• a frame mounting structure that is configured to mechanically interface with a frame of the vibratory compactor machine to provide a fixed attachment of the TVA to the frame of the vibratory compactor machine;
• a TVA carrier that extends from the frame mounting structure into an interior portion of a drum of the vibratory compactor machine;
• a resilient element that includes a first portion that is fixedly attached relative to the TVA carrier and a second portion that includes a degree of freedom of movement relative to the TVA carrier;
• and
• a mass that is attached to the second portion of the resilient element and that includes the degree of freedom of movement relative to the TVA carrier,
• wherein the TVA carrier includes an inner cavity that is configured to receive a portion of a vibrating component that is configured to generate vibration of the drum,
• wherein the first portion of the resilient element is positioned in the interior portion of the drum, and
• wherein the mass is positioned in the interior of the drum.