1. What are the contents of tower crane maintenance records?
In order to ensure the safe and economical use of the tower crane and extend its service life, the maintenance and repair work of the tower crane must be done well, and Keep maintenance records to facilitate understanding of maintenance status.
Tower crane maintenance records are mainly presented in the form of tables, including project name, user unit, tower crane installation unit, tower crane property unit, registration number, specifications and models, factory date, service life, installation date, acceptance Date, inspection date, inspection opinions, last maintenance date, inspection and maintenance records (i.e. repair and maintenance methods and content), and records of replacement of major accessories.
After performing maintenance on the tower crane, the above contents should be accurately recorded, signed by the maintenance person and relevant personnel, and kept in a file.
2. How often should the tower crane be maintained?
The maintenance of the tower crane is generally carried out regularly, so how often should the tower crane be maintained?
Generally, tower crane drivers should do daily tower crane maintenance work. Regular maintenance is usually once every seven days; the tower crane should conduct daily inspections every 80 hours of operation. If there are any abnormalities or damage, check them promptly and repair or repair them. Keep records if parts are replaced.
Generally speaking, the maintenance work of the tower crane must be carried out by professionals. The overall inspection, maintenance and upkeep of the tower crane should be carried out at least twice a month, and settlement observations should be carried out regularly.
3. How to maintain the tower crane
1. Keep the whole machine clean regularly and clean it in time.
2. Check the oil volume of each reducer and refill it in time.
3. Pay attention to check whether any parts of the wire rope are loose, broken, worn, etc. If the wire rope exceeds the relevant regulations, it must be replaced in time.
4. Check the efficiency and clearance of the brake to ensure reliable sensitivity.
5. Check the sensitivity and reliability of each safety device.
6. Check each bolt connection, especially the tower standard section connection bolts. They must be retightened after each use for a period of time.
7. Check whether the pressure plates and clips of each wire rope head are loose and tighten them in time. Regulations should be strictly followed for the scrapping of wire ropes, drums, pulleys, hooks, etc.
8. Regularly check the rods, web rods and welds of each metal component for cracks. Special attention should be paid to the places and parts where the paint peels off, especially when the paint peels off in diagonal stripes of 45°, which is the most dangerous. The cause must be identified quickly and dealt with promptly.
9. All parts of the tower crane (including the baseThe connecting bolts and nuts for the connection between the base section and the chassis, and the connecting pins with a diameter larger than Φ20 are all special-purpose parts. They are absolutely not allowed to be substituted under any circumstances, and each bolt must have two when the tower is installed. Tighten the nut.
10. The performance level of standard section bolts is level 10.9, and the performance level of nuts is level 10 (double nut anti-loosening). The top surface of the bolt head and the top surface of the nut head must have performance level marks, otherwise they will be the same. Not allowed.
11. The complete machine and metal structure should be rust-removed and spray-painted after each use.
12. Check whether the automatic magnification changing device of the spreader and the anti-dropping device of the hook are safe and reliable.
13. Observe whether the electrical contacts are oxidized or burned. If there is poor contact, repair or replace it.
14. Each limit switch and button must not malfunction. If the parts are rusty or damaged, they should be replaced in time.
15. The insulation between each electrical switch and the switch board must be good, and its insulation resistance should not be less than 0.5MΩ.
16. Check whether the fastening bolts of each electrical component are loose and whether cables and other wires are broken. If any, they should be eliminated in time.
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