| 摘要 |
<p>The present invention describes a bolt system (100) for indicating a level of preload of a bolt (103) that is connectable to a subject (104) to be fixed. The bolt system (100) comprises the bolt (103) with a bolt head (105), a first sleeve (101) attached to the bolt (103) between the bolt head (105) and the subject (104) and a second sleeve (102) attached to the bolt (103) between the bolt head (105) and the subject (104). The first sleeve (101) is an inner sleeve and the second sleeve (102) is an outer sleeve that fits around the first sleeve (101). One sleeve (101; 102) is longer than the other sleeve (102; 101). When the preload is below a maximum value, the longer sleeve (101; 102) transmits the preload between the bolt head (105) and the subject (104). When the preload is above the maximum value, the longer sleeve (101; 102) is compressed in such a way that both sleeves (101, 102) transmit the preload between the bolt head (105) and the subject (104).</p> |
