| 摘要 |
PURPOSE: A multi-purpose crane is provided to perform various works such as the sky lifting work, the drilling work employing an auger drill, and the lifting work employing a magnetic lift and to conveniently store the auger drill in a load compartment. CONSTITUTION: A multi-purpose crane comprises a boom withdrawing device(3), a bucket connecting device, and a drill connecting device. The boom withdrawing device has a first boom(30), a second boom(31) and a third boom(32) connected by multiple stages on the upper portion of a frame(2) rotating on a body(1). A hydraulic pressure connector(39) connected with a hydraulic hose(39') is formed in a portion of the boom withdrawing device. The boom withdrawing device moves by the movement of the second and third booms and supplies hydraulic pressure. Fixing recesses(41) are formed on both sides of a bucket connecting plate(40) of the third boom. A protruded shaft having a hole is formed in the lower portion of the bucket connecting plate. A bucket is connected to the front end of a support protruded onto the center of a bucket via a fixing shaft. A drill connecting pin(50) is installed in the lower portion of the third boom. A drill connector formed on a motor of an auger drill is assembled with the drill connecting pin to connect the auger drill.
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