Claims
- 1. A paver and dowel bar inserter in combination:propelling apparatus on opposite sides of the paver for moving the paver along a paving path; a supported frame from the propelling apparatus including paver bolsters extending parallel to the paving path and at least one crossbeam extending across the paving path and upwardly at the sides of the paving path; a suspended slip form attached to the paver for receiving concrete placed on the paving path and slip forming the concrete into a continuous slab on the paving path; a dowel bar inserter pan having relative movement over the continuous slab with respect to the suspended slip form for moving towards and away from the suspended slip form during the insertion of dowel bars; a plurality of dowel bar receiving stations in the dowel bar inserter pan, each dowel bar receiving station for receiving a dowel bar, holding the dowel bar, and releasing the dowel bar to a passing dowel bar inserter; a line of dowel bar inserters moveable with the dowel bar inserter pan and aligned to the dowel bar receiving stations and mounted to the supporting frame having side-by-side spacing registered to the dowel bar receiving stations to pass through the dowel bar receiving stations and to insert dowel bars from the dowel bar receiving stations into the continuous slab on the paving path; a single file dowel bar feed path moveable with the dowel bar inserter pan and having at least one vertical leg at a side of the paver and a horizontal leg extending directly over the plurality of dowel bar receiving stations; means for moving dowels along the single file dowel bar feed path whereby dowels fall into the dowel bar receiving stations in the dowel bar inserter pan when the dowel bar receiving stations are empty; and, means for moving the line of dowel bar inserters through the dowel bar receiving stations to empty the dowel bar receiving stations and insert the dowel bars to the slab.
- 2. The paver and dowel bar inserter in combination according to claim 1 and wherein the means for moving dowels:a chain feeder including a plurality of feeding lugs for pushing dowel bars along the single file dowel bar path; and, means for moving the chain feeder including the plurality of feeding lugs along the single file dowel bar path to load the dowel bars for insertion to a slab formed under the dowel bar inserter pan.
- 3. The paver and dowel bar inserter in combination according to claim 1 and wherein the dowel bar receiving stations in the dowel bar inserter pan include:an upper dowel bar shuttle with an upper shuttle bar opening for receiving a dowel bar; a lower dowel bar shuttle with a lower shuttle bar opening for permitting a dowel bar to fall through the lower dowel bar shuttle; a dowel bar inserter pan for supporting the lower dowel bar shuttle and defining a pan opening for permitting dowel bars inserted to the lower dowel bar shuttle to fall through the pan opening; and, the single file dowel bar path is defined immediately above the plurality of dowel bar inserter stations at the upper dowel bar shuttle for each inserter station.
- 4. The paver and dowel bar inserter in combination according to claim 3 and further including:means for moving the upper dowel bar shuttle relative to the lower dowel bar shuttle to permit the upper shuttle bar opening in the upper dowel bar shuttle and the lower shuttle bar opening in the lower dowel bar shuttle to move into and out of registration one with another to permit dowel bars to fall from the upper shuttle bar opening in the upper dowel bar shuttle into the lower shuttle bar opening of the lower dowel bar shuttle in the dowel bar inserter pan and on to a slab.
- 5. A dowel bar inserter in combination with a paver wherein the paver includes:a propelling apparatus for moving the paver along a paving path; a supported frame from the propelling apparatus including paver bolsters extending parallel to the paving path and at least one crossbeam extending across the paving path; and, a suspended slip form attached to the paver for receiving concrete placed on the paving path and slip forming the concrete into a continuous slab on the paving path; the improvement to the dowel bar inserter comprising: a dowel bar inserter pan having relative movement over the continuous slab with respect to the suspended slip form for moving towards and away from the suspended slip form during the insertion of dowel bars; a plurality of dowel bar receiving stations in the dowel bar inserter pan, each dowel bar receiving station for receiving a dowel bar, holding the dowel bar, and releasing the dowel bar to a passing dowel bar inserter; a line of dowel bar inserters moveable with the dowel bar inserter pan and aligned to the dowel bar receiving stations and mounted to the supporting frame having side-by-side spacing registered to the dowel bar receiving stations to pass through the dowel bar receiving stations and to insert dowel bars from the dowel bar receiving stations into the continuous slab on the paving path; a single file dowel bar feed path moveable with the dowel bar inserter pan and including a first portion of the single file dowel bar feed path for extending horizontally across the paver parallel to the cross beam for distributing dowel bars to the dowel bar inserter stations and a second portion of the single file dowel bar feed path extending vertically at one side of the paver; means for moving a line of dowel bars from the second portion of the single file dowel bar feed path the first portion of the dowel bar feed path to insert the dowel bars to the dowel bar receiving stations when the dowel bar receiving stations are empty; and, means for moving the dowel bar inserters through the aligned dowel bar receiving stations to insert the dowel bars to the slab.
- 6. The dowel bar inserter combination of claim 5 and further including:a feeder chain including a plurality of feeding lugs for pushing dowel bars along the single file dowel bar path; and, means for moving the feeder chain including the plurality of feeding lugs along the single file dowel bar path to load the dowel bars at the vertical portion of the single file dowel bar feed path and to distribute loaded dowel bars along the horizontal portion of the single file feed path for insertion to a slab formed under the dowel bar inserter pan.
- 7. The dowel bar inserter combination of claim 6 and further including:the feeder including a plurality of feeding lugs for pushing dowel bars along the single file dowel bar path; and, the plurality of dowel bar inserters suspended from the support beam for placing dowel bars into the continuous slab are both moveable to and from a position within the continuous slab.
- 8. The dowel bar inserter combination of claim 5 and further including:the propelling apparatus for moving the paver along a paving path includes propelling tracks; and, the horizontal and vertical portions of the single file dowel bar inserter path have a profile contained inside of the paver between the propelling tracks.
- 9. A dowel bar inserter in combination with a paver wherein the paver includes:a propelling apparatus on opposite sides of the paver for moving the paver along a paving path; a supported frame from the propelling apparatus including paver bolsters extending parallel to the paving path and at least one crossbeam extending across the paving path; and, a suspended slip form attached to the paver for receiving concrete placed on the paving path and slip forming the concrete into a continuous slab on the paving path; the improvement to the dowel bar inserter comprising: a dowel bar inserter pan having relative movement with respect to the suspended slip form for moving towards and away from the suspended slip form over the continuous slab during the insertion of dowel bars, the dowel bar inserter pan dimensioned to fit between the dowel bar propelling apparatus; a plurality of dowel bar receiving stations in the dowel bar inserter pan, each dowel bar receiving station for receiving a dowel bar, holding the dowel bar, and releasing the dowel bar to a passing dowel bar inserter; a line of dowel bar inserters moveable with the dowel bar inserter pan and aligned to the dowel bar receiving stations and mounted to the supporting frame having side-by-side spacing registered to the dowel bar receiving stations to pass through the dowel bar receiving stations and to insert dowel bars from the dowel bar receiving stations into the continuous slab on the paving path; a single file dowel bar feed path moveable with the dowel bar inserter pan dimensioned to fit between the propelling apparatus on opposite sides of the paver; means for moving dowels along the single file dowel bar feed path whereby dowels fall into the dowel bar receiving stations in the dowel bar inserter pan when the dowel bar receiving stations are empty; and, means for moving the line of dowel bar inserters through the dowel bar receiving stations to empty the dowel bar receiving stations and insert the dowel bars to the slab.
Parent Case Info
This application is a Continuation of application Ser. No. 09/411,744 filed Oct. 1, 1999, now U.S. Pat. No. 6,390,726 entitled DOWEL BAR INSERTER KIT HAVING CHAIN FEEDER.
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
199 04 797 |
Dec 2000 |
DE |
Continuations (1)
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Number |
Date |
Country |
Parent |
09/411744 |
Oct 1999 |
US |
Child |
09/908826 |
|
US |