Development of a Revolutionary Advanced Auto-shackle, A Construction Equipment

In the field of construction work, shackle is one of the most essential tools to build up a structure on the foundation. The process of setting up the beam to its up-right position starts from linking the end of the beam and the shackle by a construction worker. Then the beam is carried to the proper place by a crane. After fixing up the beam, according to the old-style process, a construction crew climbs up the beam to release it from the shackle. This step is hazardous and very inefficient, which is needed to be automated. For this reason, the auto shackle controller with two shackles, which can release the beam through a wire-less command, was developed. The auto-shackle controller makes the work safer and more efficient. However, the early auto-shackle controller itself was heavy and had some sorts of problems in safety and durability.

In former research, the advanced auto shackle controllers solved the problem of the durability by reducing the height and the internal mechanical structure of the shackles; the control wires were damaged easily by steel chain hits when the shackles were released. However it is still heavy because the controller uses an automotive battery for a power source. Now, we present a super miniaturized high-performance auto-shackle controller which has no exterior controller using state-of-the-art technologies. Furthermore mechanical structures are changed to ensure the safety of the shackle.