| 摘要 |
<p>A safety system for machinery, such as an agricultural baler or tractor, having exposed moving parts, comprises a mechanism (67), for deactivating the drive means and/or (66) for decoupling the machinery from the drive means, at least one sensor device (55, 56) at an exposed location in the vicinity of the moving parts of the machinery and a detector circuit (61, 62, 63, 70, 85) operable to trigger the said deactivation or decoupling means (67, 66) upon actuation of the sensor device (55, 56), the sensor device comprising an exposed housing which can be triggered simply by striking or pressing with the hand or any part of the body. Means (70) may be provided for discriminating between deliberate emergency operation of a sensor (55, 56) and an accidental impact such as may occur during normal use of the machinery. <IMAGE></p> |
