Design Problems In Elevator Lift

  • After the Elevator Lift is put into operation, we know that it is necessary to carry out regular maintenance and overhaul of the elevator. Then, after years of experience in elevator maintenance and repair, we find that there are some design problems in the elevators on the market. The main thing is that the noise isolation is not perfect:
    Design blind spot
    Elevator noise is mostly caused by the main load-bearing wall of the elevator engine room sharing the load-bearing wall with the residents or the elevator-related equipment and the wall are not completely connected with the steel, forming a “sound bridge” causing noise interference to people. At present, some design contracting companies have realized that the above problems have been modified in design, and the separation of the machine room load-bearing wall and the main wall of the owner's home can be solved by direct rigid connection by separating the floor or the stairwell. The problem of elevator vibration and noise caused by "sound bridge".

    Structural common disease
    According to elevator noise generation characteristics and transmission methods, elevator noise sources can be classified into the following two categories:

    Structural sound transmission of the equipment room: It is issued by the elevator main engine and the computer room control cabinet. The main load-bearing main wall in the elevator machine room and the main wall in the owner's home are a common wall or a rigid structure, so the main noise of the elevator noise is formed. Sound bridge", the low-frequency vibration and noise of the elevator during high-speed operation and parking pass through the sound bridge to the indoors. At present, the most common type of indoor elevator noise pollution case is that the residents on the top or the top floor are affected by noise, and other floors are not affected. The vibration transmission rate is reduced by adding a low-frequency damping composite vibration damping device to reduce the noise to a comfortable one. Below the acoustic environment.

    Structural sound transmission of the hoistway: When the elevator is running, the friction problem caused by the friction of the car and the main guide rail of the counterweight is transmitted to the hoistway structure. The main rail of the elevator is fixed to the two sides of the door and connected to the wall. The friction and vibration when the car guide stops on the car guide rail will be connected to the wall through the fixed guide rail to form a “sound bridge” and transmitted to the indoors.