DEVICE AND METHOD FOR ADJUSTING POSITION OF HEAVY OBJECT
To improve workability in a narrow place such as a bridge pier by enabling turning movement of an upper device, adjusting a bridge shaft, a height and a plane in a jacked up state without replacing the device, miniaturizing the whole device and dividing the devices in the three directions one by one...
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Format: | Patent |
Sprache: | eng ; jpn |
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