| 摘要 |
Anti-chattering (jarring) shuttering base comprising a screw jack (6-7-8) consisting of a screw (6) which screws into a nut (7) integral with a fastening plate (8) and of a runner (5) to which the said screw (6) is securely attached with the capability to rotate, characterised in that it also comprises a piston or slide (1) intended to be accommodated with the capability for longitudinal sliding in the tubular lower end part of a shuttering upright (2), the said piston (1) being integral with the said runner (5). <IMAGE>
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