1. The hoisting rigging of the protective frame shall use the steel wire rope specified in the current national standard "Steel Wire Rope for Important Use" GB89 18. The diameter of wire rope shall not be less than12.5mm.
2. The lifting capacity of the lifting protective frame shall meet the requirements, and the nominal lifting torque shall not be less than 400kN? M, its rated lifting weight should be greater than 90% of the frame weight.
3. The connection point between the wire rope and the protective frame should be at the top of the vertical truss, and there should be no sharp lobes at the joint.
4, the length of the hoisting wire rope should be able to ensure smooth ascension.
5, lifting speed shall not be greater than 3.5m/min.
6. Before the protective frame is lifted from preparation to delivery, no one except the operator may engage in edge protection and other operations. Operators should wear safety belts.
7. When lifting the protective frame, the operator must stand in the building or on the adjacent frame, and it is forbidden to stand on the protective frame for operation; It is forbidden to be here before the installation of the frame body is completed.
8. Each frame should be directly connected to the building; Before the hoisting wire rope is stressed, the wall parts shall not be removed; Even the wall components shall not be removed during the construction.
9, when using the auxiliary frame, before each ascension, the wall pieces and fasteners connected with the auxiliary frame can only be removed after the steel wire rope is tensioned. Commanders should hold relevant certificates, signalmen and operators should obey the command and coordination, and must not leave their posts without permission.
10. When hoisting the protective frame, it must be carried out according to the principle of "hoisting one piece, fixing one piece and sealing one piece". It is strictly forbidden to dismantle more than two frames, connecting rods, facades and back cover facilities in advance.
1 1, the fastening degree of fasteners must be checked one by one after each protective frame hoisting; The tightening torque of all connectors must reach 40N? m—65N？ m .
This paper introduces the content of "Lifting Requirements for External Protective Frames in Building Engineering". Welcome to visit Zhong Da for more information.
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