| 摘要 |
<p>In combination with a slipform paver, a chain feeder (H) is disclosed which is contained within the profile of a slipform paver. The chain feeder (H) is used in combination with a plurality of dowel bar inserter stations. A single file dowel bar path (102) is provided immediately above the plurality of dowel bar inserter stations overlying an upper dowel bar shuttle (96) for each inserter station. The feeder (H) includes a plurality of feeding lugs (G) for pushing dowel bars along the single file dowel bar path parallel to openings in the upper dowel bar shuttle (96). This enables dowel bars to fall into the upper dowel bar shuttle (96) until all inserter stations are loaded with dowel bars. When the dowel bars are inserted, the upper dowel bar shuttle (96) moves relative to the lower dowel bar shuttle (92). This permits an upper shuttle bar opening in the upper dowel bar shuttle (96) and the lower shuttle bar opening in the lower dowel bar shuttle (92) to move into registration one with another. Dowel bars fall from the upper shuttle bar opening in the upper dowel shuttle (96) into the lower shuttle bar opening of the lower dowel bar shuttle (92) through a pan opening in the dowel bar inserter pan (D) and onto a slab (L) formed beneath the dowel bar inserter pan (D). Thereafter, the dowel bar inserters place the dowel bars centrally of the recently slipformed slab (L).</p> |
