Lifting steps
1. Approach and upper row of equipment
When all the preparations have been completed, we will start to organize the entry, upper row and hoisting of the equipment.
2. Preparations before hoisting
Before the equipment is hoisted, it is necessary to conduct a comprehensive inspection of the tools used for hoisting and transportation, and do a comprehensive and careful inspection and verification work. Check whether the equipment installation datum mark and orientation line mark are correct; check whether the lifting lugs of the equipment meet the lifting requirements.
3. Tie connection of hoisting rigging
Mainly include hanging lugs on the pulley, tension test and azimuth adjustment of the electric winch, setting of the tow row traction and tail system, etc.
4. Trial hanging
Check and confirm before the trial lifting; the hoisting commander makes a disclosure of the hoisting operation; arranges the main points and main contents of each monitoring post for monitoring; carries out multiple tests on lifting and lowering, so that each part has coordination and safety; review the changes of each part, etc. .
5. Hoisting in place
The commander-in-chief officially orders the deputy commanders to check the standby status of each post and check whether the command signal system is normal; each post reports the preparation situation and informs the command platform in time with a signal; officially lift the equipment to leave the temporary support 500— Stop at 800mm, and make further inspections. Each post should report whether the situation is normal; remove the equipment support and ground debris, and continue to hoist.
6. Hoisting example
Now, the hoisting process of a device with a weight of 32 tons is given as an example. The hoisting process can be divided into two steps:
The first step: the hoisting of the equipment. Hoist the equipment from the ground to the 7.800m floor.
In order to make full use of the lifting lugs that come with the equipment and reduce other auxiliary work to ensure the safety of equipment hoisting and meet the requirements of the construction progress, the equipment uses two 90-ton truck cranes to cooperate with each other to hoist the whole machine. Considering the large size of the equipment and the use of the whole machine for hoisting, it is required to reserve an equipment hoisting hole on the outer wall of the civil engineering on the second floor. floor, and then use the roller horizontal transport method to transfer the refrigeration equipment away. The specific lifting procedure is as follows:
1) Clear the obstacles on the hoisting site and maintain them;
2) Prepare hoisting equipment and implements and install fixed chain hoists on the top of the reserved holes for civil works;
3) The equipment is transported to the hoisting site, and the equipment packaging is removed to check the equipment lifting rings, and at the same time protect the edges, corners and important parts of the equipment;
4) Set up a chain hoist and a small handling tank for transporting the dismantling equipment inside the hoisting hole;
5) Lift the equipment to a place 20mm above the ground for trial lifting, and check whether the hoist, spreader and lifting ring are normal;
6) Two 90-ton truck cranes are used to lift the equipment to the outside of the reserved hole for civil engineering;
7) The hook of a crane is replaced by a preset manual hoist; the equipment is gradually pulled into the building through the cooperation of the manual hoist and the crane, and at the same time, the equipment is placed on the small transport tank set on the horizontal transport track ;
8) Transfer the equipment away and repeat the above steps to hoist the second equipment.
Post time: Jun-15-2022