Machine room-less elevators refer to elevators that do not require a building to provide a closed special machine room for installing elevator drive hosts, control cabinets, speed limiters and other equipment. The machine room-less elevator is not a simple partial improvement of the traditional elevator 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 machine-room elevators to machine-room-less elevators. The machine-room-less elevators are controlled by frequency conversion speed microcomputer, which is very different from the previous vertical elevators in structure. In order to save space, the machine room-less elevator changed the control cabinet, main engine, speed limiter and other equipment installed in the machine room above the hoistway to be installed in the hoistway. The dedicated machine room setting was cancelled, which effectively increased the utilization rate of the building area while reducing Cost of construction. 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 can save the space of the hoistway to the greatest extent.
The introduction of the thin-type permanent magnet synchronous door operator in the form of double closed-loop control of current speed can realize the high efficiency and smoothness of the door opening and closing speed curve, reduce the door opening and closing time, and improve the traffic flow; preset multiple intelligent operating curves for selection to meet the needs of different occasions . The use of microcomputer control system and inverter system integration highly integrated module technology, comprehensively improve the system response speed and reliability. The suspension mode of the car is changed, the comfort of the machine roomless elevator is greatly improved, and the intensity of the installation and maintenance work of the machine roomless elevator is reduced. At the same time, materials are saved and the height of the top layer is reduced.
Since the machine room-less elevator does not have a machine room, its control system has higher flexibility, convenience and reliability compared with ordinary elevators.