| 摘要 |
<p>The crane movement indication system uses a signal generator. This signal generator is placed in a housing (4) which is mounted in the cranes control system cable (1, 2). The lower part of teh control cable (2) is fixed at its upper end to the signal generator housing (4). The other end of the control cable (2) is attached to the crane control box (5). The arrangement of the signal generator housing (4) between the cables (1, 2) enables the light signal to be situated at a low height. The height of the housing (4) from which the luminous signal is emitted is slightly greater than the height of a man.</p> |
