| 摘要 |
The elevator of an elevating type scraper is supported at the open front end of the bowl by linkage permitting upward and rearward swinging movement to a raised position in which it is sufficiently high to permit the ejector to move forward in the bowl during the unloading operation. The linkage for raising and lowering the elevator includes cushioning means operative to cushion the elevator against shock when rocks or other large objects are encountered during the excavating operation.
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