The invention provides a large-tonnage bridge crane with the upper limit of a lifting hook located above a rail surface. The large-tonnage bridge crane comprises a cart walking mechanism, a trolley walking mechanism, a winch, two fixed pulley sets and a lifting hook set. The lifting hook group comprises two movable pulley groups connected through a lifting plate, a balance wheel and a main lifting hook; the cart walking mechanism comprises two parallel bridge frames, and the two ends of the bridge frames are connected with the first rails in a sliding mode. The trolley walking mechanism comprises a first main beam and a second main beam which are arranged in parallel, and the two ends of the first main beam and the two ends of the second main beam are in sliding connection with the two bridge frames respectively. A winding drum of the winch is arranged above the first main beam; supports of the fixed pulley block and the balance wheel are positioned above the first main beam and the second main beam; when the main lifting hook is located at the upper limit position, the movable pulley block is located between the first main beam and the second main beam; the upper limit of the main lifting hook is higher than the rail surface of the first rail. The upper limit of the lifting hook is lifted above the rail surface, and the lifting space of the lifting hook is increased.
本发明提供了一种吊钩上极限位于轨面以上的大吨位桥式起重机,包括大车行走机构、小车行走机构、卷扬机、两个定滑轮组和吊钩组;吊钩组包括通过吊板连接的两个动滑轮组、一个平衡轮和主吊钩;大车行走机构包括两根平行设置的桥架,桥架的两端与第一轨道滑动连接;小车行走机构包括两根平行设置的第一主梁和第二主梁,第一主梁和第二主梁的两端分别与两根桥架滑动连接;卷扬机卷筒设于第一主梁的上方;定滑轮组和平衡轮的支座均位于第一主梁和第二主梁上方;当主吊钩位于上极限位置时,动滑轮组位于第一主梁和第二主梁之间;主吊钩的上极限高于第一轨道的轨面。本发明使吊钩的上极限提升到轨面以上,提升了吊钩的起升空间。
Large-tonnage bridge crane with upper limit of lifting hook located above rail surface
吊钩上极限位于轨面以上的大吨位桥式起重机
2024-08-23
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
Large bridge crane lifting hook for hydraulic power plant
European Patent Office | 2022
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