| 摘要 |
The safety device is intended to be used on vehicles equipped with brakes 9 actuated by master cylinders 8 connected into a main pneumatic circuit powered by a compressed air source 4, 5, 6. The device includes detection and signalling means which are actuated by an obstacle encountered in the path of the vehicle. It further includes emergency stop control means for the vehicle which are controlled by the detection means. These emergency stop control means include an auxiliary pneumatic circuit connected in parallel with the main circuit and comprising a relay valve 10 for actuating the master cylinders 8 which is normally closed and is controlled by the detection means with the aid of a solenoid valve 13 linked to the compressed air source. <IMAGE>
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