Abstract
ANALYSIS OF VIBROACOUSTIC SIGNALS RECORDED IN THE PASSENGER LIFT CABIN
Highlights
Lifting devices belong to vertical transportation machines which are commonly used in nearly each, new, multifamily housing
The authors can speak about such factors as ambient temperature, the cabin total volume and the light intensity as well as the factors directly dependent on the construction such as vibrations or the sound volume level emitted by the slides, power drive and cabin walls
Measurements of the sound volume were performed with the use of Bruel&Kjaer (B&K) 2260 Investigator equipped with B&K 3595 double microphone probe for sound volume
Summary
Lifting devices belong to vertical transportation machines which are commonly used in nearly each, new, multifamily housing. Aiming at optimization of the structure in terms of the weight, manufacturing costs as well as energy consumption causes that more and more construction elements are represented by the products made of thin-walled materials This is the way to achieve a compromise between price and quality. Clearances appearing in the slides as well as the cabin walls construction (thin-walled elements resonance) directly influence the level of vibrations and the sound emission which are the parameters determining the feeling of comfort. These phenomena are one of the forms of energy dissipation and they contribute to the overall device efficiency drop. The lift serial number The year of installation Loading capacity Q [kg] Speed V [m/s] Lifting height H [m] The number of stops n The cabin depth A [m] The cabin width B [m]
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