01 Causes of noise in top floor rooms

The noise in the top floor room is mainly caused by the low-frequency noise generated by the vibration excitation generated by the elevator traction machine when it is running, which is transmitted to the household room through the building wall.

Characteristic

It mainly affects the owners of top floors such as the top floor and sub top floor.

02 Causes of noise in middle floor rooms

When the elevator shaft is close to the living room, when the elevator is running, the vibration formed by the car/counterweight and the guide rail is transmitted to the residents' living room through the guide rail bracket and the shaft wall, forming low-frequency noise

Characteristic

It will affect the owners of all floors in the elevator journey.

Traction machine secondary vibration isolation device A

Application scenario

Noise problem in the top floor room

Characteristic

It can be flexibly arranged, and vibration isolation devices are added at the lower part of both ends of the bearing beam

Scope of application

Applicable to most ladder types

Traction machine secondary vibration isolation device B

Application scenario

Noise problem in the top floor room

Characteristic

It can be flexibly arranged and installed between the traction machine and the bearing beam.

Scope of application

At present, it is only applicable to LEHY-III

Three component vibration absorber

Application scenario

Noise problem in the top floor room

Characteristic

Effectively suppress the vibration frequency selected in the design

Scope of application

Only applicable to LEHY-III

Shaft vibration isolation support

Application scenario

Noise problem of middle floor rooms

Characteristic

The shaft vibration isolation support is equipped with specially designed damping structure and limiting structure. It can safely and effectively block the noise from the shaft.

Scope of application

Field measurement is required, and matching shall be carried out according to the results