| 摘要 |
Disclosed is an exchangeable-locking drill chuck integrating a drill for building engineering with a straight shank drill, comprising a gripping jaw locking mechanism of the straight shank drill, a locking mechanism of the drill for building engineering, and a gripping jaw self-locking mechanism. A drill chuck body assembly (3) and a gripping jaw locking control panel (15) form a gripping jaw telescopic-locking mechanism. A ferrule (6), a locating ring (12) which is buckled with the ferrule, and a drill chuck puller (5), a drill chuck (10) and a drill chuck spring (7) which are arranged in the locating ring in sequence, as well as a short column (13) which is used for radially limiting the drill chuck form a chisel fastening and locking mechanism. A lower rotation stopping plate (4), an upper rotation stopping plate (11) and the drill chuck body assembly form the gripping jaw self-locking mechanism. The drill chuck shortens the distance to the SDS locking mechanism from a gripping jaw telescoping mechanism, effectively avoids the situation that the drill body shoulder interferes with the chuck when using a large-scale drill, and realizes that the drill for building engineering of more than ¦ 12 mm applies to all conditions generally. |
