LOAD MEASURING DEVICE FOR AN ELEVATOR INSTALLATION

摘要

An elevator installation (1) has an elevator cab (6) with a supporting structure (8) which bears the elevator cab (6), wherein the supporting structure (8) has two mounts (8.1, 8.2). A positioning arrangement (30, 31, 72, 74) is fitted to each mount (8.1, 8.2), and precisely one sensor (16, 18), which is in each case part of a load measuring device (15), is positioned on said positioning arrangements, wherein the positioning arrangements (30, 31, 72, 74) have material structures (30.1, 30.2, 31.1, 31.2) and sensor mounts (60, 62, 64, 66), respectively. The sensors (16, 18) detect a change in distance between the material structures (30.1, 30.2, 31.1, 31.2) or between the sensor mounts (60, 62, 64, 66), wherein this change in distance is caused by a change in load capacity of the elevator cab (6). Signals from the sensors (16, 18) are processed in an evaluation unit (24) and a signal representing the load capacity is used for elevator control.