| 摘要 |
A paving machine that moves in a travel direction spreads, levels and finishes concrete into a form having a generally upwardly exposed, finished concrete surface that terminates in lateral sides. The paving machine has a main frame with first and second bolsters arranged at opposite ends of the main frame. Each set of bolsters has two hydraulic jacking columns used to raise and lower the machine frame. Crawlers attached to the bottom of the jacking columns engage the ground and move the paving machine in the travel direction. A paving kit is secured to the machine frame and has a substantially rigid center portion oriented transverse to the travel direction. It terminates in lateral ends and is disposed between the bolsters. A variable length terminal paving kit is secured to each lateral end of the center portion. Each terminal kit has an end frame secured to the center portion, a sideform defining the lateral end of the paving kit, and an adjustable length support structure between the end frame and the slipform. The support structure includes a hydraulic actuator connected to the end frame and the sideform, respectively, for moving both towards and away from each other. Spacers are interposed between the end frame and the slipform, and their combined width defines the distance between the sides of the concrete strip being laid down. A finishing pan between opposing pairs of spacers finishes the concrete surface, and the hydraulic actuator is operatively coupled to the end frame and the sideform for applying a compressive force to the spacers and the finishing pans that rigidly connects the end frame to the sideform, with the spacers and the finishing pans between them. The paving machine further includes an additional plurality of spacers of differing widths for different concrete slab widths. All replaceable components of the terminal are constructed and arranged so that they can be manually exchanged due to their relatively light weight for varying the length of the terminal unit by one or two persons without removing the paving kit from the main frame and without needing the help of lifting equipment.
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