Advantages and disadvantages of machine room-less elevators and machine room elevators

The influence of the guide rail is relatively large, and the comfort of the machine room is significantly weaker than that of the machine room. Because of the influence of these two items, the machine-room-less elevator is not suitable for high-speed trapezoids above 1.75/s. Because the hoistway wall has limited ground support, the load-bearing capacity of the machine-roomless elevator should generally not be greater than 1150 kg. Excessive load requires too much load on the hoistway wall, and the thickness of our general reinforced concrete is 200 mm, and the brick-concrete structure is general The size is 240mm, which is not suitable for excessive load. The trapezoidal machine room below 1.75m/s and 1150 kg can replace the machine room, and the high-speed elevator with large capacity, the machine room elevator is significantly better than the machine room elevator.

Temperature effect

The heat of the elevator is relatively large. At the same time, its various electronic components can only accept high temperatures. Moreover, the machine-room elevators and machine-room-less elevators currently selected use permanent magnet synchronous gearless traction machines, and their permanent magnet synchronous motors The temperature should not be too high, otherwise it is easy to cause "loss of magnetism" phenomenon. Now the national standard clearly stipulates the temperature and exhaust air volume of the computer room. The main heating components such as the machine room of the machine room are all in the hoistway. Because there is no corresponding cooling and exhaust equipment, the temperature of the machine room-less elevator will have a greater impact on the machine machine and control cabinet, especially the fully transparent visit elevator. It is not suitable for the machine room-less elevator, and the hot air in the elevator cannot be discharged. You must pay attention to choosing this type of elevator.

Fault repair and personnel rescue

The repair and handling of machine-room-less elevators is not as convenient as machine-room elevators. The repair and commissioning of machine room-less elevators is more troublesome, because no matter how good the elevator is, there will be problems. And machine-room-less elevators because the main engine is installed on the beam and the main engine is in the hoistway. It is very troublesome if the main engine (motor) presents problems. The national standard expressly stipulates that the elevator safety window of the machine room can not be added, but the machine room is necessary to be added to facilitate the rescue and maintenance, and the convenience and safety of the main engine repair. In terms of repair, the elevator with the machine room has an absolute advantage. If there is space Still advocate the use of organic rooms. In terms of personnel rescue, the machine room-less elevator is also very troublesome. In the event of a power failure, it is necessary to install an emergency power supply. Generally, the emergency power supply of the elevator requires a relatively large investment.