1. Before lifting operation, a special construction scheme for lifting operation must be prepared.

2. Experts shall be organized to demonstrate the special construction scheme of lifting engineering with unconventional lifting equipment and methods and single lifting weight of 1kN or above.

The Regulation on Safety Supervision and Management of Construction Hoisting Machinery stipulates that the installation unit shall organize the installation and disassembly operations in accordance with the special construction scheme and safety operation procedures for the installation and disassembly of construction hoisting machinery.

the special scheme that does not need expert argumentation shall be submitted to the supervision unit after being examined and approved by the construction unit, and signed by the project chief supervision engineer.

Extended information

Hoisting requirements

(1) The rolling method used in indigenous construction is used to load and unload mobile equipment, and the thickness of the rolling bar should be consistent, and the annual length should be 5cm longer than the width of the pallet. It is forbidden to fill the rolling bar with gloves. When loading and unloading the car, the slope of piping shall not be greater than 2, the raceway shall be set flat and solid, the joints shall be staggered, the rolling speed shall not be too fast, and the rope shall be used when necessary.

(2) In the installation process, measures should be taken in time if problems are found, and then lifting should be continued after treatment.

(3) When lifting large-scale tower equipment with a boom, multiple hoists are operated jointly, and the hoisting speed of each hoist must be approximately the same, so as to ensure that the stress of each hoisting point on the tower body tends to be approximately uniform and avoid the tower body from being deformed due to uneven stress.

(4) When the tower tank is hoisted by rotating method or pulling down method, the hinged wrist installed at the bottom of the tower body must have the ability to resist the horizontal thrust generated in the hoisting process, and the left and right sliding ropes of the tower body must be firm during the hoisting process, so that the tower body can slowly fall into the foundation when it is rotated to the height, so as to avoid accidents and deformation.

(5) When installing equipment on the frame or building, its strength and stability should meet the requirements of installation conditions. After the equipment is installed and positioned, it should be connected, fastened or welded according to the requirements of the drawings, and only after the strength and stability of the design requirements are met can it be decoupled, otherwise it should be temporarily fixed.

Baidu Encyclopedia-Lifting Safety Technology

Baidu Encyclopedia-Provisions on Safety Supervision and Management of Construction Lifting Machinery