A vibration isolator comprising a first attachment plate defining a first central bore, a second attachment plate defining a second central bore, and a resilient member disposed between the first and second attachment plates, wherein the resilient member defines a third central bore and the first, second and third central bores are in fluid communication with each other.

A locking mechanism for a base plate of a vibratory compactor includes a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor, and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator. The hydraulic control circuit includes a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction. In the first position of the spool valve the pressurized hydraulic fluid moves the locking actuator to a locked position, and after the locking actuator is in the locked position, the pressurized hydraulic fluid operates a hydraulic motor configured to power the vibratory compactor. In the second position of the spool valve the pressurized hydraulic fluid moves the locking actuator to an unlocked position.

A vibratory compactor for a work machine, includes a support frame that defines an interior space and includes a base disposed at a lower end thereof configured to contact a work surface. A guide member is attached to the support frame. A vibratory mechanism includes a vibratory housing and includes a contact plate. The contact plate is configured to compact the work surface. An excitation device is configured to vibrate the contact plate. A guide opening is formed through the vibratory housing configured to movably receive the guide member and to permit the vibratory mechanism vertical movement relative to the support frame. At least one biasing member is disposed between the support frame and the vibratory housing and generates a selected force between the support frame and the vibratory housing when the base is in contact with the work surface.

A locking mechanism for a base plate of a vibratory compactor includes a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor, and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator. The hydraulic control circuit includes a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction. In the first position of the spool valve the pressurized hydraulic fluid moves the locking actuator to a locked position, and after the locking actuator is in the locked position, the pressurized hydraulic fluid operates a hydraulic motor configured to power the vibratory compactor. In the second position of the spool valve the pressurized hydraulic fluid moves the locking actuator to an unlocked position.

A vibratory compactor for a work machine, includes a support frame that defines an interior space and includes a base disposed at a lower end thereof configured to contact a work surface. A guide member is attached to the support frame. A vibratory mechanism includes a vibratory housing and includes a contact plate. The contact plate is configured to compact the work surface. An excitation device is configured to vibrate the contact plate. A guide opening is formed through the vibratory housing configured to movably receive the guide member and to permit the vibratory mechanism vertical movement relative to the support frame. At least one biasing member is disposed between the support frame and the vibratory housing and generates a selected force between the support frame and the vibratory housing when the base is in contact with the work surface.

A rollered grading assembly, including an elongated roller drum, an axle extending through the drum, an elongated housing partially enclosing the drum and connected to the axle, an elongated blade connected to the housing, a pivot rod perpendicular to the axle and connected to the housing, a coupler connected to the housing, and a pivot actuator connected to the coupler and housing. The coupler has a proximal end connected to the housing portion and positioned adjacent the roller drum and a spaced distal end extending away from the housing. Movement of the distal end a first distance while the proximal end remains stationary urges the housing to pivot around the drum and move the blade portion a second, shorter distance into a desired position relative grade.

A vibration isolator is provided comprising a first attachment plate defining a first central bore, a second attachment plate defining a second central bore, and a resilient member disposed between the first and second attachment plates, wherein the resilient member defines a third central bore and the first, second and third central bores are in fluid communication with each other.

Soil compactor including a compaction drum rotatably supported by a compaction roller frame, wherein the compaction drum frame comprises two longitudinal members arranged in a direction longitudinal to the compactor on both sides of the compaction roller and supporting said compaction roller, and, connecting the two longitudinal members together, two cross members arranged in a direction perpendicular to the compactor and along both sides of the compaction roller, wherein the compaction roller frame is connected to a compactor main frame via one of the two cross members, and wherein at least one sight opening is provided within the other of the two cross members.

A rollered grading assembly, including an elongated roller drum, an axle extending through the drum, an elongated housing partially enclosing the drum and connected to the axle, an elongated blade connected to the housing, a pivot rod perpendicular to the axle and connected to the housing, a coupler connected to the housing, and a pivot actuator connected to the coupler and housing. The coupler has a proximal end connected to the housing portion and positioned adjacent the roller drum and a spaced distal end extending away from the housing. Movement of the distal end a first distance while the proximal end remains stationary urges the housing to pivot around the drum and move the blade portion a second, shorter distance into a desired position relative grade.

A method for operating an attachable compactor, an attachable compactor as well as an excavator with an attachable compactor. For a corresponding efficient operation in accordance with the present invention, a display indicates the end of a time interval (required compaction time) that depends on a measured contact force or a parameter corresponding to the contact force.