Recently, due to the frequent "elevator accident", the elevator maintenance unit again. In July, a district of hangzhou, on elevator deadly tragedy then hangzhou elevator accident issued by the technical appraisal group identification results, "inadequate maintenance unit of elevator maintenance is the main cause of the accident" -- in fact, this also is basically known all kinds of elevator accident report, the most common to the rhetoric.

However, "the maintenance does not reach the designated position" of the standard fuzzy problems itself. No maintenance belong to maintenance does not reach the designated position, according to the requirement that maintenance according to the rules, but there was no involves maintenance project and requirements of accidents of the item, is in place or not?

Special equipment inspection institute in chongqing sun consultant in an article provides such cases. "A special survey technology group" for inspection, normal maintenance, began in 2015 through the "elevator safety regulation great battle" screening 123 elevators for braking ability to spot check, found that there are still eight elevators are a serious shortage of braking force, 6.5% of the total number of spot checks.

"I asked when the elevator inspectors and elevator maintenance member is what reason, the answer is, no braking test requirement!" Sun adviser said in the article.

Normal maintenance of elevator did so, and inadequate maintenance, behind is full of use the unit to save money not maintenance, maintenance industry of low price competition, maintenance quality difficult to guarantee the mess.

Maintenance of "frequency" 15 days to come from

On July 26, 2015 after jingzhou elevator accident, public awareness of elevator safety issues, "elevator at least once every 15 days to maintenance" rules be spread energetically. But in fact, once every 15 days of the maintenance regulations in many industry insiders view is neither scientific nor reasonable, belong to excessive maintenance.

The personage inside course of study introduces, as of the end of 2014, the number of elevators in more than 340, ten thousand, a 10 floors house elevator, conform to the provisions of the routine maintenance needs about 2 hours at a time. The frequency of the maintenance workload, monthly maintenance personnel busy not to come over, the sense of responsibility is not strong, coping strategy, lead to maintenance become a mere formality, poor quality.

Relevant regulatory authorities, he thought, let go as soon as possible the best with time as the benchmark of maintenance requirements, the time-based maintenance principle into based on equipment condition or risk-based maintenance, to encourage enterprises to improve equipment reliability and life expectancy, significantly reduce the frequency of maintenance, reduce the cost of maintenance of artificial labor resource saving society.

How to scientific maintenance

Current maintenance industry belongs to small profit, as labor costs rise, will make the cost pressures caused by the frequent maintenance maintenance companies and users are unbearable.

It is understood that the international commonly used is based on the risk or the state of the equipment preventive maintenance, equipment adopted remote monitoring and maintenance expert system based on Internet, not only the number of maintenance is greatly reduced, the safety and reliability of the equipment can also be greatly improved. Based on the risk or the state of the equipment maintenance could prompt companies to increase the safety and reliability of the device itself, in order to reduce maintenance frequency and cost of the equipment.

However, maintenance to ensure the safe operation of the equipment is very important, but the maintenance is not the decisive factors in security, in the technical and cost should be allowed to try to reduce the need for human operation under the condition of the maintenance work, and will focus on improving the quality of the product itself.

Until today, unfortunately, the public to receive the main information is still "elevator safety hazard mainly in elevator maintenance" or "how to correctly by ladder", "how to save his life." And what are the problems how to design and manufacture of the elevator itself, seldom ask reconciliation.