Unloading method of net frame lifting frames

Abstract

The invention discloses an unloading method of net frame lifting frames. The unloading method of the net frame lifting frames comprises the following steps: installing support bases at the tops of net frame supports; installing a plurality of lifting frames at the tops of the net frame supports at intervals; lifting net frame structures to the height of the support bases through jacks at the tops of the lifting frames; connecting the net frame structures with the support bases at the tops of the net frame supports with no lifting frame installed through rod members; connecting the support bases at the tops of the net frame supports with the lifting frames installed through the unblocked rod members which are arranged among the net frame structures and prearranged connection paths; partially unloading tension of the jacks according to preset values; arranging through holes on the portions on the walls of the lifting frames and blocking the prearranged connection paths; connecting the net frame structures with the support bases at the tops of the net frame supports with the lifting frames installed through the through holes; removing all tension of the jacks; and removing the lifting frames. The unloading method of the net frame lifting frames can prevent the net frames with no lifting frames installed from deforming and has the advantages of being high in stability and safety.

Description

technical field [0001] The invention relates to a lifting frame unloading method, in particular to a network frame lifting frame unloading method. Background technique [0002] At present, when carrying out grid hoisting operations, usually the support is installed on the top of each grid support; then the lifting frame is installed on the top of the grid support at intervals; Connect the rods between the frame and the support on the top of the grid bracket without the lifting frame; then remove all the tension of the jack, cut off the lifting frame, and finally connect the grid structure with the grid bracket at the lower part of the original lifting frame. However, this lifting frame unloading method is only suitable for small grids, and there are potential safety hazards for the hoisting and unloading of large grids; for example, the total number of grid supports is N, and the number of grid supports for installing lifting frames is n, the number of network frame support...

AI Technical Summary

Problems solved by technology

However, this lifting frame unloading method is only suitable for small grids, and there are potential safety hazards for the hoisting and unloading of large grids; for example, the total number of grid supports is N, and the number of grid supports for installing lifting frames is n, the number of network frame supports without lifting frames is N-n. After removing all the tension of the jack, the entire network frame is first supported by N-n network frame supports without lifting frames, and the designed support standard is N network frame supports, when the weight of the network frame is very large, the pressure on each network frame support is likely to exceed the standard; even if the network frame is connected to the other n network frame supports after the lifting frame is removed , at this time the network frame has been unloaded, so there is no support between the network frame and the n network frame supports, and the pressure is basically borne by the previous N-n network frame supports, thus improving the quality and quality of the network frame hoisting operation. Security makes a huge difference

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