Automatic grab hook lifting appliance for I-shaped steel

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Automatic grab hook lifting appliance for I-shaped steel

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GAO HAICHENG / XU GUANGJIAN

The invention provides an automatic grab hook lifting appliance for I-shaped steel. The automatic grab hook lifting appliance comprises a grab hook body, and the grab hook body comprises a connectingpart, a grab hook arranged on the lower part of the connecting part in a hinged mode, and locking pieces arranged on the two sides of the connecting part in a mirroring mode; and the locking pieces each comprise an idler wheel arranged on the connecting part, a positioning piece arranged on the side face of the connecting part, a pin shaft arranged on the positioning piece, a locking hook arrangedon the pin shaft, and a rocker arm arranged between the idler wheel and the pin shaft, torsional springs are arranged on the pin shafts, one ends of the torsional springs abut against the positioningpieces, the other ends of the torsional springs abut against the locking hooks, locking shafts are arranged on the two sides of the grab hook correspondingly, the locking hooks are movably arranged on the locking shafts, and the inner edge and the outer edge of the grab hook are each in an arc shape. Compared with the prior art, the locking structure is simple, the locking state is firm, the security risk of hoisting of the I-shaped steel is reduced or avoided, and the functions of stable moving, efficient working, automatic hooking and automatic locking are achieved; and during constructionoperation, manual hooking for fixing is not needed, manual intervention is reduced, and the construction efficiency is improved.

一种用于工字钢的自动抓钩吊具，它包括:抓钩本体，抓钩本体包括连接部、铰接设置在连接部下的抓钩和镜像设置在连接部两侧的锁定件；锁定件包括设置在连接部上的滚轮、设置在连接部侧面的定位件、设置在定位件上的销轴、设置在销轴上的锁定钩和设置在滚轮与销轴之间的摇臂，销轴上设置有扭簧，扭簧一端抵接定位件，扭簧另一端抵接锁定钩，抓钩两侧分别设置有锁定轴，锁定钩可活动设置在锁定轴上，抓钩内外缘均为弧形。与现有技术相比，本发明锁定结构简单，锁定状态牢固，减少或避免了工字钢吊运的安全风险，具有移动平稳、工作高效、自动挂钩、自动锁定功能；在施工操作时，无需人工挂钩固定，减少了人工介入，提高了施工效率。