| 摘要 |
Bearing bolts (2) arranged on the foot (5) of a swivel bearing (1) are so set round the vertical center of the bearing that at least two bolts (2) are at an angle to one another. A spring (7) is made up of crisscrossed rubber elements which converge at their crest and have at their lower end mountings (3) for the bolts (2). The bolts form equi-distant tangents to a circle in the horizontal round the vertical center of the bearing (1) and in the case of an even number of bolts then two oppose one another at spacing and stand parallel. In the case of two pairs of bolts, these are offset through 90 deg . The spring mountings (3) can rotate or are non-twistably fitted on the bolts. The mountings have axial stays or grooves to correspond to those on the bolts (2), the grooves being as wide or wider than the stays. The foot (5) is fixed to a side or transverse stringers by means of an inverted U-mounting (12).
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