The machine room-less elevator is bai compared to the machine room elevator, that is to say, the equipment in the machine room is as small as possible while maintaining the original performance by using modern production technology, eliminating the machine room, and replacing the control cabinet in the original machine room. , Traction machine, speed limiter, etc. are moved to the top of the elevator shaft or the side of the shaft, thereby eliminating the traditional machine room. In order to meet customers' special requirements for height and roof.
1. The advantages of the elevator without machine room compared with elevator with machine room
The advantage of the machine room is that it saves space and can only build a maintenance platform under the host.
Since there is no need for a computer room, it has a greater impact on the building structure and cost
This allows architects to have greater flexibility and convenience in design and gives designers greater freedom. At the same time, because of the cancellation of the machine room, for the owner, the machine room elevator is better than the machine room elevator. The cost should be low.
Due to the particularity of the overall design of some antique building buildings and the requirements for the roof, the elevator problem must be solved within an effective height, so the machine roomless elevator meets the needs of this type of building. In addition, in places with scenic spots, because the machine room is on High floors, thereby destroying the local ethnic exoticism, if the machine room-less elevator is used because there is no need to set up a separate elevator main room, the height of the building can be effectively reduced.
Places where it is not convenient to set up elevator machine rooms, such as hotels, Hotel annex buildings, podium buildings, etc.
2. The disadvantages of the elevator without machine room compared with elevator with machine room
Noise, vibration, and limitations of use
There are two popular ways to place the host in the machine room: one is to place the host on the top of the car
Through the guide wheel in the hoistway, no matter which method is used above
The influence of the noise is very large, because due to the steel connection, and the noise must be digested in the shaft, plus the sound of the brake, the sound of the fan will be amplified. Therefore, in terms of noise, the machine room is obviously larger than the machine room. In addition, the rigid connection of the main engine, the resonance phenomenon will inevitably be transmitted to the car and the guide rail, which has a greater impact on the car and the guide rail. Therefore, the comfort of the machine room is obviously weaker than that of the machine room.
Due to the influence of these two items, the machine room-less elevator is not suitable for high-speed trapezoids above 1.75/s. In addition, due to the limited supporting force of the hoistway wall, the load capacity of the machine roomless elevator should not be greater than 1150 kg. Excessive load capacity requires too much load on the hoistway wall, and we usually have a thickness of 200mm for reinforced concrete, brick-concrete structure Usually 240mm, it is not suitable for excessive load, so the ladder-shaped machine room below 1.75m/s and 1150 kg can replace the machine room, and the high-load high-speed elevator, the machine room elevator is obviously better than the machine room
