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PUBLISH TIME: 2021-04-15
MRL elevators refer to elevators that do not require a building to provide a closed dedicated machine room for installing elevator drive hosts, control cabinets, speed limiters and other equipment. MRL elevators is not a simple partial improvement of the traditional elevators in the past, but a major change in elevator technology. This is because some of the key technologies it uses will be promoted and applied to other elevator products, thereby driving the technological progress of the entire elevator industry.
In recent years, the development of the elevator industry has changed from the past MR elevators to MRL elevators. MRL elevators are controlled by frequency conversion and speed control microcomputers, which are very different in structure from the previous vertical elevators. In order to save space, MRL elevators changed the control cabinet, main engine, speed limiter and other equipment installed in the machine room above the hoistway into the hoistway, canceled the dedicated machine room setting, and effectively increased the utilization rate of the building area while reducing the cost of building. The use of miniaturized gearless main engine and 2:1 traction system to achieve transportation eliminates the noise in the engine room caused by traditional gear meshing; the thin control cabinet is installed in the hoistway near the first floor, which can be effectively waterproofed and can be quickly repaired outside the hall. Conveniently carry out installation and debugging, data reading and writing, daily maintenance, passenger rescue, etc., and with its minimum thickness of only 130mm, it saves the space of the hoistway to the greatest extent.
The introduction of thin-type permanent magnet synchronous door operator in the form of double closed-loop control of current speed can achieve high efficiency and smoothness of door opening and closing speed curve, reducing door opening and closing time, and improving traffic flow; preset multiple intelligent operating curves for selection to meet the needs of different occasions . Adopting the integrated high-integration module technology of the microcomputer control system and the inverter system, comprehensively improve the response speed and reliability of the system. The suspension mode of the car is changed, the comfort of the MRL elevators is greatly improved, and the intensity of the installation and maintenance of the MRL elevators is reduced. At the same time, materials are saved and the height of the top layer is reduced.
Since MRL elevators do not have a machine room, its control system has higher flexibility, convenience and reliability compared with ordinary elevators.
14 Apr, 2021
Industry data shows that in the first half of 2020, the growth rate of the total number of elevators in my country exceeded 15%, and the proportion of shipments in the second half of the year compared with orders decreased, but the annual growth rate of production and sales remained at about 15%, compared with the previous year.
14 Apr, 2021
What is the development direction of the elevator?
14 Apr, 2021
According to statistics, there are more than 346,000 elevators in use in China, with an annual growth rate of about 50,000 to 60,000.