Elevator Vibration Isolation

With the advancement of urban construction, the use of elevators in buildings has become more and more popular, and the impact of abnormal mechanical vibration and noise interference during elevator operation on residents has become more and more common. Especially in the elevator shaft close to the rooms and residents, the strong vibration and noise of the elevator make it difficult to sleep, which seriously affects normal work and life. Elevator vibration is caused by many reasons. Among them, the occurrence of elevator operation is one of the most important factors affecting elevator operation, and abnormal vibration of elevator operation is caused by resonance problems. Elevator traction machine, steel wire rope, weight, car and other structural systems themselves have a certain natural frequency. The traction machine itself excites vibration by generating errors during operation. When the vibration is excited in the machine, an excitation frequency is generated. When the frequency is consistent with the overall structure of the system, resonance will be caused and the entire system will vibrate strongly. This medium is transmitted to the living room close to the floor through the vibration of the support frame, causing interference to indoor residents and accompanied by huge noise.

Vibration isolation support solution:
      By setting a vibration isolation support between the pulling machine and the supporting frame, the stiffness and damping of the support are the main parameters to control the vibration isolation effect. By setting reasonable parameter values, the drag machine itself can dissipate vibration energy through the support damping as much as possible, restrain the propagation of vibration, and reduce the impact of vibration.

Solution:
      Inconvenience or inconvenience during construction to maintain the integrity of the structure, it is not easy to install seismic isolation support and choose a tuned mass damper. The tuned mass damper is mainly composed of spring, stiffness and damping. Set this type of damper in the area where the vibration is more obvious at the bottom of the pulling unit. By adjusting the parameters of the three parts, the resonant frequency of the damper is consistent with the structure. Combined with reasonable placement, the vibration will transition to the damper, which will bring The vibration energy of the machine absorbed by the damper. At the same time, an inertial load opposite to the vibration load of the pulling machine is generated on the main structure, which reduces the vibration of the main structure and has a good effect.