30 Jun Some Thoughts on the security situation in elevator
1. Safety Situation in China with elevator
Our elevator installation has experienced rapid growth and high growth in two stages.
1.1 Phase 1
In the 1990s, passenger elevators and lifts the rapid increase in the same time, because of the elevator there is no mandatory retirement age requirements, this phase of the installation of an elevator to now there is still a considerable part is still in use, there is a serious safety hazard. Mainly due to the following aspects.
(1) speed control technology is backward. Specific performance is: elevator when changing speed vibrations, comfort is poor, brake bear a large load, low security.
(2) Safety device components and the possibility of poor security. Performance governor tripping speed error is large, the limit switch action is not reliable, the hoisting machine with the increase in the use of time there will be wear and tear, seals aging.
(3) Elevator repair parts procurement difficulties. Our elevator industry developed rapidly, elevator replacement quickly, resulting in elevator parts procurement difficulties.
Problems (4) management. Economic restructuring may make use of many elevator units have been its owners, resulting in elevator maintenance difficulties. In addition, the changes will eventually lead to the use of units change elevator safety management and elevator operators, such as elevator malfunction new unit to take over the maintenance and management, operating personnel mishandling may cause an accident.
1.2 Stage 2
Since 2000, as China’s rapid economic development, the living conditions of urban residents has undergone a fundamental change, lift this stage due to increased volume,
Elevator in use is also a problem.
(1) differences in their quality, the company has led to instability in the quality of the elevator. As the elevator market demand increases, some small lift manufacturers of products in terms of quality assurance at the same time it is difficult to rely on low-priced into the market.
(2) Since the test is to use the elevator installed after the completion of acceptance testing, resulting in an elevator in the whole installation process installation team can only rely on the quality control of consciousness, it is difficult to ensure the quality of the installation of the elevator in full compliance with the relevant standards.
(3) the use of different quality and passenger environment also affect the level of safety of operation of the elevator. According to the usual test case to see, bars, KTV, hotel and some other places of entertainment elevator failure rate is the highest.
Development (4) inspection teams to keep up with the increasing number of elevators. Due to the rapid increase in the number of elevators, elevator safety hazards is difficult to find in a regular inspection.
(5) insurance market management confusion, it is difficult to ensure the quality of maintenance of the elevator.
2. Considerations
Elevator 2.1 years longer for use
2.1.1 Local Legislation compensate for lack of existing standards to ensure safe operation
Elevator appear in the course of wear and tear, aging, damage, malfunction, accident and other conditions, will be in use for many years after the emergence of the elevator repair, replacement parts lack or no maintenance of the value of the case.
2.1.2 classification test, a comprehensive judgment, reduce the failure rate
2.1.3 The uniform implementation of the 2003 version of the standard, check the hardware
2.2 for 2000 after the installation of an elevator
2.2.1 Constraints developers choose the elevator
2.2.2 Inspection Resource Sharing
2.2.3 ruled elevator safety
2.2.4 specification maintenance market, in place to ensure the maintenance