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Tightening and untightening machine for bolts for fastening a cover onto an enclosure, in particular a primary pump of a nuclear power station
Tightening and untightening machine for bolts for fastening a cover onto an enclosure, in particular a primary pump of a nuclear power station
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机译:螺栓拧紧和松开机,用于将盖子固定在外壳上,特别是核电站的主泵上
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摘要
The subject of the present invention is a machine for tightening and untightening bolts (4) for fixing a cover (2) on an enclosure (1). The machine comprises means (10) for centring on the cover (2), a ring (12) supported by the said centring means, means (20) for simultaneously prestressing several bolts, means (36) for screwing or unscrewing several bolts simultaneously, disengageable means for controlling, simultaneously or separately, the vertical movement of the prestressing means (20) and the screwing or unscrewing means (36), means for screwing or unscrewing a tightening nut on each bolt, integrated means (85) for storing all the bolts, and means (87) for handling the bolts. IMAGE
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