| 摘要 |
<p>The present invention relates to a novel lifting system for stage equipment capable of preventing stage equipment from colliding with a ceiling or a bottom of a stage due to malfunction or error generated when power line is connected. According to the present invention, the lifting system for stage equipment comprises: a lifting sensing means (30) including an auxiliary ascent limit switch (36) and an auxiliary decent limit switch (37) detecting that the stage equipment (2) ascends higher than a secondarily ascent limit height (H2) or descends lower than a secondarily descent limit height (L2); and a control unit (40) stops a driving motor when detecting that the stage equipment (2) ascends to the secondarily ascent limit height (H2) higher than an ascent limit height (H1) or descends to a secondarily descent limit height (L2) lower than descent limit height (L1) by monitoring a signal of the auxiliary ascent limit switch (36) and the auxiliary decent limit switch (37). Therefore, although the stage equipment (2) ascends toward a direction opposite to user operation due to the wrong connection of a power line supplying power to the control unit (40) or malfunction, the lifting system for stage equipment can prevent the stage equipment (2) from being damaged due to ascent over the secondarily ascent limit height (H2) or descent below the secondarily descent limit height (L2).</p> |
