| 摘要 |
A grab shear comprises two legs (1, 1') connected via a joint (2), the lower parts (5, 5') of the legs being arranged to clamp an object (4) to be lifted and the uppper parts of the legs being connected with a coupling member (3). The legs have the shape of plates (1, 1') in whose upper parts (6, 6') are provided slots (7, 7') for receiving the coupling member, which slots are obliquely positioned in order to make the upper parts of the legs - and thereby also the lower parts - to approach each other when a pulling force is applied to the coupling part. The coupling member consists of a ring (3) and each one of the slots (7, 7') is open in order to receive the coupling ring before a pivot serving as a joint is brought to steadily connect the two leg plates with each other. |
