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US 4,993,869 AGranted
Concrete finishing machine with vibrating finishing rollers
AssigneeCMI Corporation
InventorsEwald R. Ulmer, Murray A. Rowe
Life of this patent
Estimating the term…
Abstract
A concrete finishing machine includes a surfacing unit having one or more finishing rollers supported on the surfacing unit carriage by a finishing roller vibrating assembly which includes a frame supporting the finishing rollers at one end and on which is mounted a pair of vibrator units producing vibrational forces which are applied to the finishing rollers through the frame, the vibrator units being mounted on a common beam and spaced apart laterally of one another whereby horizontal forces are cancelled and only vertical amplitude vibrational forces are applied to the finishing rollers.
Claims20
In a concrete finishing machine including a main frame adapted for movement along a roadway or the like being surfaced, a finishing unit for finishing a concrete surface of the roadway, comprising:
- a carriage supported by the main frame and adapted for movement back and forth along the main frame laterally of the roadway;
- finishing roller means including at least one elongated finishing roller having first and second ends;
- suspension means for rotatably mounting said finishing roller to said carriage with said finishing roller being located above the surface of the concrete being finished in engaging relationship therewith;
- drive means supported on said carriage and coupled to said at least one elongated finishing roller at said first end thereof for rotating said at least one elongated finishing roller as said carriage is moved along said main frame;
- vibrating means supported by said suspension means near said second end of said at least one elongated finishing roller and external thereto, said vibrating means being coupled to said at least one elongated finishing roller only at said second end thereof for vibrating said at least one elongated finishing roller, said vibrating means including first and second vibrator units, each vibrator unit including an eccentric mass adapted for rotation, said first and second vibrator units being synchronized in operation and having their respective eccentric masses rotating in opposite directions relative to one another, said suspension means including a secondary frame means extending transversely relative to the axis of said at least one finishing roller, said first and second vibrator units being carried by said secondary frame means and spaced apart laterally of one another;
- and
- said suspension means including isolating means interposed between said vibrating means and said carriage for preventing the transmission to said carriage of vibrational forces produced by said vibrating means.
4 more elements
In a concrete finishing machine including a main frame adapted for movement along a roadway or the like being surfaced, a finishing unit for finishing a concrete surface of the roadway, comprising:
- a carriage supported by the main frame and adapted for movement back and forth along the main frame laterally of the roadway;
- finishing roller means including first and second elongated finishing rollers extending in parallel spaced relation and each having first and second ends;
- suspension means for rotatably mounting said finishing rollers to said carriage with said finishing rollers being located above the surface of the concrete being finished in engaging relationship therewith;
- drive means supported on said carriage and coupled to said finishing rollers at said first ends thereof for rotating said finishing rollers as said carriage is moved along said main frame;
- vibrating means supported by said suspension means near said second ends of said finishing rollers and external thereto, said vibrating means being coupled to said finishing rollers at said second ends thereof for vibrating said finishing rollers, said vibrating means including first and second vibrator units having respective first and second eccentric masses associated with said first and second finishing rollers, respectively, mounting means rotatably mounting said first and second eccentric masses for rotation in opposite directions relative to one another, said eccentric masses being coupled to the associated finishing roller near its second end, whereby vibrational forces reduced by said masses are coupled to said finishing rollers, said suspension means including first and second bearing means receiving the second ends of said first and second finishing rollers, respectively, and a common frame member supporting said first and second bearing means, mechanically interconnecting said first and second bearing means and said second ends of said finishing rollers supported therein, whereby horizontal components of the vibrational forces cancel one another and vertical components of the vibrational forces add to one another;
- and
- said suspension means including isolating means interposed between said vibrating means and said carriage for preventing the transmission to said carriage for preventing the transmission to said carriage of vibrational forces produced by said vibrating means.
4 more elements
In a concrete finishing machine including a main frame adapted for movement along a roadway or the like being surfaced, a finishing unit for finishing a concrete surface of the roadway, comprising:
- a carriage supported by the main frame and adapted for movement back and forth along the main frame laterally of the roadway being surfaced,
- finishing roller means including first and second finishing rollers extending in parallel spaced side-by-side relation, each of said finishing rollers having fist and second ends,
- suspension means for rotatably mounting said finishing rollers to said carriage with said finishing rollers being located above the surface of the concrete being finished in engaging relationship therewith, said suspension means including a sub-frame having bearing means receiving said second ends of said first and second finishing rollers;
- drive means coupled to said first ends thereof of said finishing rollers for rotating said finishing rollers as said carriage is driven relative to the main frame;
- vibrating means supported by said sub-frame near said second ends of said finishing rollers and external thereto, said vibrating means being coupled to said finishing rollers near said second ends thereof, said vibrating means including first and second vibrator units having respective first and second eccentric masses associated with said first and second finishing rollers, respectively, mounting means rotatably mounting said first and second eccentric masses for rotation in opposite directions relative to one another, said eccentric masses being coupled to the associated finishing roller near its second end, whereby vibrational forces produced by said masses are coupled to said finishing rollers, said sub-frame mechanically interconnecting said bearing means and said second ends of said finishing rollers supported therein, whereby horizontal components of the vibrational forces cancel one another and vertical components of the vibrational forces add to one another;
- and
- said suspension means including isolating means interposed between said sub-frame and said carriage for preventing the transmission to said carriage of vibrational forces produced by said vibrating means.
4 more elements
In a concrete finishing machine including a main frame adapted for movement along a roadway or the like being surfaced, a finishing unit for finishing a concrete surface of the roadway, comprising:
- a carriage supported by the main frame and adapted for movement back and forth along the main frame laterally of the roadway being surfaced,
- finishing roller means including first and second finishing rollers extending in parallel spaced side-by-side relation, each of said finishing rollers having first and second ends,
- suspension means for rotatably mounting said finishing rollers to said carriage with said finishing rollers being located above the surface of the concrete being finished in engaging relationship therewith;
- said suspension means including a sub-frame having first and second support means supporting, respectively, said second ends of said first and second finishing rollers;
- drive means coupled to said first ends thereof of said finishing rollers for rotating said finishing rollers as said carriage is driven relative to the main frame;
- vibrating means supported by said sub-frame near said second ends of said finishing rollers and external thereto, said vibrating means being coupled through said sub-frame to said first and second finishing rollers near said second ends thereof for producing vibrational forces which are applied through said sub-frame to said first and second finishing rollers;
- and
- said suspension means including isolating means interposed between said vibrating means and said carriage for preventing the transmission to said carriage of vibrational forces produced by said vibrating means.
5 more elements
In a concrete finishing machine including a main frame adapted for movement along a roadway or the like being surfaced, a finishing unit for finishing a concrete surface of the roadway, comprising:
- a carriage supported by the main frame and adapted for movement back and forth along the main frame laterally of the roadway being surfaced;
- finishing roller means including at least one finishing roller having a forward end and a rearward end,
- suspension means for rotatably mounting said at least one finishing roller to said carriage with said at least one finishing roller being located above the surface of the concrete being finished in engaging relationship therewith and having its forward end located forwardly of said carriage and its rearward end located rearwardly of said carriage, said suspension means including a sub-frame having means receiving said forward end of said at least one finishing roller;
- drive means coupled to said rearward end of said at least one finishing roller for rotating said at least one finishing roller as said carriage is driven relative to the main frame;
- vibrating means supported by said sub-frame near said forward end of said at least one finishing roller and external to said finishing roller, said vibrating means being coupled through said sub-frame to said at least one finishing roller only near said forward end thereof for producing vibrational forces which are applied through said sub-frame to said at least one finishing roller;
- and
- said suspension means including isolating means interposed between said vibrating means and said carriage for preventing the transmission to said carriage of vibrational forces produced by said vibrating means.
4 more elements
Dependencies are inferred from the claim text.