| 摘要 |
The screw has a fork-like head formed from two spaced sections (16,18) which have recesses (20,22) on their outsides. A mounting aid (40) has a longitudinal sleeve (42) in which a shaft (52) can slide axially. Two parallel spaced arms (60,62) are connected to the end of the shaft. The arms have front gripping sections (64,66) which engage in the recesses of the head sections of the screw for transferring a tensile force. An adjustment mechanism (54,70) is provided for adjusting the two parts and the shaft relative to one another. |
