Drum Type Log Unscrambler

摘要

The need for log unscrambler equipment arises when a woodyard utilises log loading equipment (either fixed gantry crane or mobile loaders) with grab sizes exceeding one ton in capacity. These log bundles, once placed on the log receiving deck, must be converted into a steady flow of logs, so as not to block the downstream feed chutes by over feeding and not permitting periods of negligible feed or reduced throughput.This process is achieved typically using unscrambler conveyors. These systems operate by means of dropping the timber bundles into a pocket, from which the bottom logs are removed by drag chains that hook the logs, pulling continuously from the bottom of the pocket, delivering a consistent feed. An example of such a machine layout (a Jackladder unscrambler) is shown in Fig. 1.