| 摘要 |
<p>PROBLEM TO BE SOLVED: To measure height of a trolley wire which is displaced in a zigzag state, by following the trolley wire easily and relatively continuously with high accuracy.SOLUTION: A height measurement device 1 comprises a first electric slider 4 capable of moving by reciprocating movement in a lateral direction on a lorry 2 which can move on rails R, R and first and second laser distance meters 6a, 6b, 6c for measuring heights of a center lowermost part and both side parts of a trolley wire T are fixed to the first electric slider 4. A sequencer 15 moves the first laser distance meter 6a to a proper measurement position by driving the first electric slider 4 until a lost event is solved, when the laser of the first laser distance meter 6a is deviated from the center lowermost part of the trolley wire T and therefore the laser of the second laser distance meter 6b (6c) is deviated from the trolley wire T, and output of the measurement data from the second laser distance meter 6b (6c) is stopped, namely the lost event occurs, for making the laser meters follow the trolley wire T.</p> |
