| 摘要 |
<p>WINCH APPARATUS FOR VIBRATING CONCRETE SCREED A vibrating concrete screed having a motor driven vibrating shaft in an elongated frame mounts at each end of a single or interconnected plural frames a detachable winching unit driven by the shaft through a fluid motor. The screed may be winched automatically, at varying angles, at different speeds at each end and with the winching units performing a screeding function.</p> |
