TAMPING DEVICE FOR COMPACTING SOIL, CONCRETE, AND THE LIKE

• US 3,802,791 A
• Filed: 11/17/1971
• Issued: 04/09/1974
• Est. Priority Date: 11/25/1970
• Status: Expired due to Term

• Current Assignee: Dietrich Hoepfner, Helmut Heckner, Philipp Uebel
• Original Assignee: Dietrich Hoepfner, Helmut Heckner, Philipp Uebel
• Inventors: Uebel, Philipp, Heckner, Helmut, Hoepfner, Dietrich
• Primary Examiner(s): Frazier, Roy D.
• Assistant Examiner(s): Holko, Thomas J.
• Application Number:
  US05/199,515
• Time in Patent Office: 874 Days
• Field of Search: 404/133,113
• US Class Current: 404/133.1
• CPC Class Codes: E02D 3/068 Vibrating apparatus operating with systems involving reciprocating masses E02D3/054, E02D3/061 take precedence

Abstract

A tamping device which has a tamping foot and a mass above the foot in the form of a drive motor or engine and a crank driven thereby with a rod connected to the crank for being reciprocated thereby in the vertical direction and having a resilient connection with the tamping foot. The mass is also resiliently supported on the tamping foot and relative movement between the mass and the tamping foot is confined to a single vertical plane and within which plane the mass and tamping foot are moveable relatively in the vertical direction while the mass can be moved a certain amount laterally relative to the tamping foot in the plane or can be tilted in the plane whereby steering and movement of the device while in operation can readily be controlled by forces exerted manually on the mass.

Claims

1. In a tamping device for compacting materials such as concrete and soil;

a tamping foot engageable with the material to be composited, a mass above the tamping foot including a motor and a crank driven thereby, a rod connected to said crank to be reciprocated by the crank and extending vertically downwardly therefrom toward said tamping foot, guide means operatively interposed between said mass to said tamping foot and permitting relative movement therebetween in only a single vertical plane, resilient means resiliently supporting said mass on said tamping foot and connecting said rod to said tamping foot, and graspable means connected to said mass for manual movement thereof in said plane in a direction transverse to the direction of reciprocation of said rod, said guide means comprising rocker means pivoted to said tamping foot and to said mass on respective axes parallel to each other and perpendicular to said plane, said rocker means comprising first and second rigid members, said first member having one end portion pivoted to said tamping foot and said second member having one end pivoted to said mass, the other ends of said first and second members being pivotally interconnected on an axis parallel to said axes at said one ends of said first and second members, and means for locking said first and second members together at the said other ends thereof to cause said first and second members to form a rigid unit.

2. A tamping device according to claim 1 which includes means for adjusting said resilient means resiliently supporting said mass.

3. A tamping device according to claim 1 which includes means for adjustably biasing said first and second members for relative rotation thereof about the pivotal interconnection of the said other ends thereof to adjust said resilient means resiliently supporting said mass.

4. A tamping device according to claim 1 in which said guide means includes posts fixed to said tamping foot and extending upwardly therefrom, a plate connected to said rod guided on said mass for reciprocation thereon parallel to the axis of said rod, and apertures in said plate through which said posts slidably extend and the apertures being elongated in a direction parallel to said plane.

5. A tamping device according to claim 4 in which said resilient means comprise first springs bearing between the bottom of said plate and the top of said tamping foot and second springs bearing between the top of said plate and the upper ends of said posts.