Tool driving or impacting – With work engaging means supporting drive – Anchored to work
Patent
1997-08-11
2000-06-13
Vo, Peter
Tool driving or impacting
With work engaging means supporting drive
Anchored to work
173 37, 173 49, 173130, 175 55, E02D 718
Patent
active
060737042
ABSTRACT:
Supporting clamps for a tool such as, for example, a pile driver machine are used to tilt a machine support relative to a horizontal plane. The clamps include a pair of jaw elements one of which is received on a pivot and the other of which has a pair of parallel spaced pistons. The clamp jaw elements gird a fixed reference device to support the tool securely for subsequent operations. Different pressures applied to the two pistons causes the clamp to tilt about the fixed reference device, and thereby to tilt the tool to which it is attached. The difference in pressure is controlled to rotate the tool as desired. In a second embodiment of the invention, the desired angle is established by controlling an angle of a backup surface, and applying equal pressure to the two pistons. The fixed reference device is driven into the angled backup surface to establish the desired tilt angle. In a further embodiment, one piston is disposed at each side of the gap. The two pistons are spaced apart along the gap. A fixed clamping element is disposed outside the line defined by the two pistons. Separate fluid pressures applied to the two pistons both urge one side of a the fixed reference device against the fixed clamping element, and also controls the angle of the clamp about the fixed clamping element. Other embodiments include four pistons in opposed pairs controlled by at least two independently controlled fluid pressures.
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Nakamura Keiichi
Nishimura Akira
Okabayasi Sinichi
Yasuoka Kazuhiko
Calve James
Tosa Machinery Industries Co., Ltd.
Vo Peter
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