Patent ID: 9056747
Filing Date: 2015-06-16
Classification: B66B,G01G,G01L

Abstract:
1. An elevator installation, comprising: an elevator cage; a support construction bearing the elevator cage, the support construction comprising first and second beams, each of the first and second beams having a top surface and side surfaces extending from the top surface, the side surfaces having substantially vertical orientation; first and second sensors; respective material structures at each of the first and second beams, the material structures extending in a direction away from the vertically oriented side surfaces of each of the respective first and second beams, the first sensor being arranged at the material structure at the first beam and the second sensor being arranged at the material structure at the second beam, a change in spacing at the material structure at the first beam being measurable by the first sensor, and a change in spacing at the material structure at the second beam being measurable by the second sensor, the first and second sensors being the only sensors arranged at the first and second beams for sensing the change in spacing, the first sensor detecting a compression of the first beam in response to loading of the support construction and the second sensor detecting an expansion of the second beam in response to the loading, the material structures formed to compensate for temperature influences by amplifying sensor signals generated by the first and second sensors in response to the detection of the compression and expansion respectively.