초록 ▼

A high density concrete placer is longitudinally translatable along a pair of parallel oriented support rails positioned adjacent to an area in which wet concrete has been poured. The concrete placer includes a bridge having first and second ends and first and second roller assemblies coupled to the

A high density concrete placer is longitudinally translatable along a pair of parallel oriented support rails positioned adjacent to an area in which wet concrete has been poured. The concrete placer includes a bridge having first and second ends and first and second roller assemblies coupled to the first and second ends of the bridge. The roller assemblies contact the support rails and enable the bridge to be longitudinally translated along the support rails. A frame includes a plurality of immersible vibrator units which are coupled at spaced apart intervals along one side of the frame and descend vertically downward therefrom. A rolling table is coupled to the bridge and to the frame to be laterally translated between the first and second ends of the bridge. The frame includes a subframe which is vertically displaceable between a first and a second position and serves to vertically displace the vibrator units between a first and a second position. In the first position the vibrator units are positioned above the surface of the wet concrete and in the second position the vibrator units are immersed in the wet concrete.

대표청구항 ▼

A high density concrete placer longitudinally translatable along a pair of parallel oriented support rails positioned adjacent to an area in which wet concrete has been poured comprising: a. a bridge having first and second ends; b. first and second roller assemblies coupled to the first and second

A high density concrete placer longitudinally translatable along a pair of parallel oriented support rails positioned adjacent to an area in which wet concrete has been poured comprising: a. a bridge having first and second ends; b. first and second roller assemblies coupled to the first and second ends of said bridge and contacting the support rails for supporting said bridge above the upper surface of the wet concrete and for enabling said bridge to be longitudinally translated along the support rails; c. means coupled to the first and second ends of said bridge for controlling the elevation of said bridge with respect to the surface of wet concrete; d. a table having front and rear sides and including: i. a subframe having a front side pivotally coupled to the front side of said table; ii. a plurality of immersible vibrator units coupled at spaced apart intervals to the rear side of said subframe and descending vertically downward therefrom for vibrating a segmental width of said wet concrete, wherein said segmental width is substantially less than the width of said concrete; iii. means coupled to said table and to said subframe for vertically displacing the rear side of said subframe between a first and a second position wherein said vibrator units are elevated above the surface of the wet concrete in the first position and are immersed in the wet concrete in the second position; and e. means coupled to said bridge and to said table for enabling said table to be incrementally laterally translated between the first and second ends of said bridge; whereby said table may be laterally translated an incremental distance along said bridge when said vertical displacing means is in the first position; a segmental width of said concrete is vibrated when said vertical displacement means is in the second position; and the entire width of said wet concrete may be vibrated after at least one lateral translation of said table with respect to said bridge.