The invention relates to a foldable portal crane in the technical field of cranes. The foldable portal crane comprises a folding beam, supporting legs and a hoisting device; the folding beam comprises a folding arm I and a folding arm II, one end of the folding arm I is correspondingly hinged to one end of the folding arm II through two hinge shafts I, and the axes of the two hinge shafts I are correspondingly perpendicular to the axis of the folding arm I in the length direction. The end, corresponding to the folding arm I, of the folding arm II is provided with an open groove capable of containing an arm body of the folding arm I when the folding arm I and the folding arm II are folded along the corresponding hinged position. Right-angle-shaped pulley seats are arranged at the two ends of the folding beam, horizontal seat bodies of the pulley seats are correspondingly hinged to the corresponding ends of the folding beam through hinge shafts II, and pin shafts used for limiting the folding beam from deflecting along the hinge shafts II are inserted into the sides, corresponding to the corresponding hinge shafts II, of the two ends of the folding beam. The foldable portal crane is simple in structure and convenient to use, the folding beam and the supporting legs can be folded, the occupied space position is small after folding, the foldable portal crane can be automatically driven into a boxcar after folding, and transition is convenient.
一种涉及起重机技术领域的可折叠门式起重机,包含折叠梁、支腿和起吊装置;所述折叠梁包含折叠臂Ⅰ和折叠臂Ⅱ,折叠臂Ⅰ与折叠臂Ⅱ的一端通过两个铰接轴Ⅰ对应铰接,且两铰接轴Ⅰ的轴线均与叠臂Ⅰ长度方向轴线对应垂直,折叠臂Ⅱ对应叠臂Ⅰ的一端设有能够在叠臂Ⅰ与折叠臂Ⅱ沿相应铰接位置折叠时容纳叠臂Ⅰ臂身的开槽;折叠梁的两端均设有直角形的滑轮座,滑轮座的水平座身与折叠梁相应端通过铰接轴Ⅱ对应铰接,折叠梁两端对应相应铰接轴Ⅱ的一侧均插接有用于限制折叠梁沿铰接轴Ⅱ偏转的销轴;本发明结构简单,使用方便,折叠梁与支腿均能够折叠,折叠后占据空间位置较小,折叠后可以自行驶入货车车厢,转场方便。
Foldable portal crane
一种可折叠门式起重机
2021-10-26
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |