Adjustable bolster swing legs for slipform paving machines
US10053167B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2018 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jan 17, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.