The precautions and maintenance of lift use
Fall arrest safety device: fall arrest safety device is an important part of the construction hoist, rely on it to eliminate the occurrence of cage fall accidents, to ensure the safety of the lives of the occupants.
Lifts use precautions and maintenance.
1、Fall arresting safety device.
Fall arrest safety device is an important part of the construction hoist, to rely on it to eliminate the occurrence of cage fall accidents, to ensure the safety of the lives of the occupants. Therefore, the fall arrester factory test is very strict, factory by the statutory inspection unit to it for torque measurement, critical speed measurement, spring compression measurement, each with a test report, assembled to the construction hoist after the rated load of the fall test, and the hoist in use on site must be every three months for a fall test. The factory two years of fall arrest safety device (fall arrest safety device on the factory date), but also must be sent to the statutory inspection unit to test the test, and then once a year. So far very few people send inspection, some sites even every three months to detect a fall test are not done, all think their fall arrester no problem, but once the accident is too late. Why not according to the system of regular testing and inspection? The use of units blindly think not bad even if good. In fact, the fall arrester can only be judged by testing and inspection, the daily operation is impossible to determine whether it is good or bad, for those overdue fall arrester, it is recommended that it is better to send early inspection and regular testing, only to do a good job, in order to prevent malignant accidents before they happen.
The safety switch of the lift are designed according to the safety needs, there are fence door limit, cage door limit, top door limit, limit bit switch, upper and lower limit switch, counterweight anti-break rope protection switch, etc.. Some construction sites in order to save some limit switch artificial cancellation and short connection or damage after not timely repair, it is the same as the abolition of these several safety lines of defense, planting the hidden danger of accidents. Example: cage to load long things, cage can not be placed in the cage need to extend the cage outside, and artificially cancel the door limit or top door limit, in the above-mentioned safety facilities are not perfect or incomplete, as usual, carrying people and things, this illegal operation is to take human life, in order to avoid the occurrence of hidden accidents, I hope the use of unit leadership to strengthen management, strict requirements for lift maintenance and operators to regularly check the various safety switches Safety and reliability, to eliminate accidents.
3、Gear and rack wear and tear replacement.
Construction on site, the operating environment conditions are harsh, cement, mortar, dust can not be eliminated clean, gears and rack of mutual grinding, teeth are worn sharp still in use, should be given attention. As we all know, the tooth shape should be like a cantilever beam, when worn to a certain size, the gear (or rack) must be replaced.