B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
254/135
B66F 11/00 (2006.01)
Patent
CA 1144145
ABSTRACT An apparatus for lifting and shifting the upper sweep in relation to the lower sweep in the construction of a large cylindrical cistern, comprising a support member hung on the upper edge of the lower sweep and provided with an upstanding carrier body. The upper edge of the latter extends parallel to the upper edge of the lower sweep to form a track. The carrier-body carries a lift member which in turn carries the upper sweep. The lift member is formed as a yoke, the cross portion of which rests on a wedge-shaped shifting member in turn resting on the carrier body. The wedge is reciprocably displaceable parallel to the lower sweep edge with the aid of a hydraulic cylinder. During a first phase of the forward travel, the lift member and the upper sweep are solely given a lifting movement, and during a subsequent forward movement the lift member and the upper sweep are also given a shifting move- ment. At the return movement of the wedge, the lift member and the sweep are first lowered in their shifted position, whereafter only the wedge and the lift member are returned to their initial positions.
365028
Handelsbolaget Rodoverken
Swabey Ogilvy Renault
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