L68A1 Mast Sectionrestart the tower crane after shutdown
Many construction sites will be shut down and back to work for some reasons. The tower crane will be put into use again after being stopped for a period of time. A comprehensive and detailed inspection should be carried out to eliminate all potential safety hazards before it can be put into use. Here, the small compilation of the tower crane factory summarizes some matters needing attention when the tower crane is put into use and discusses with you.
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1. Whether there is water accumulation or frost heave deformation in the structure
If it is relatively cold, such as returning to work after the new year, there will be more or less snow in winter, and the tower crane structure is not completely sealed, so there will be some water in some standard sections, components, gaps and other places. During the inspection, pay attention to these parts. Once found, clean them up immediately, because these water will not only corrode the metal itself, but also cause greater damage when it expands and contracts with heat. With the change of seasons and the increase of temperature, its corrosiveness will multiply.
2. Lubricating oil
After a long period of placing, it is necessary to carefully check the lubricating oil in each reducer before use, and observe whether there is water, dust and other debris. It is not only necessary to check the quality and quantity of oil, but also to confirm the label of the oil. It is necessary to replace the oil that needs to be replaced seasonally to avoid the normal use of the imaging equipment.
3. Wire rope
The steel wire rope plays an irreplaceable role in the tower crane. The steel wire rope scrapping standard must be strictly implemented. The steel wire rope that meets the scrapping conditions must be scrapped and replaced immediately. Due to a period of shutdown, it is necessary to pay attention to whether the steel wire rope is rusted or not, and the surface impurities. During the inspection, pay attention to the parts related to the wire rope, such as drum, rope arranger, pulley, rope clamp anti groove device, etc. In addition, pay attention to the lubrication of wire rope. Only good lubrication can ensure the service life and safe use of wire rope.
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4. Electrical system
Before the wire rope is put into use again, the independence of its power supply must be ensured, and "one machine, one switch, one leakage" must be guaranteed, and the unsatisfied can not be put into use. In the inspection of electrical system, it is important to check whether there is water, dust, sundries, etc. in the distribution box, whether the cable is damaged and insulated, whether the motor itself and junction box are sealed, whether the protection circuit, main parts, etc., to ensure sensitivity, reliability, safety and effectiveness.
5. Safety device
The safety device of steel wire rope is particularly important for safety production. Before re starting, all safety devices must be opened for inspection to ensure that there is no water and dust, and they can work normally. All safety devices must be tested in practice and put into use after confirmation.
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