| 摘要 |
PURPOSE:To enable an unmanned tractor and a tailer to be automatically coupled together, by coupling the unmanned tractor to the coupling shaft of the trailer through an automatically disconnecting type coupler after the trailer is positioned in a predetermined position on a runway with the use of a trailer positioning jig. CONSTITUTION:Upon coupling, the direction of a trailer B is adjusted so that a coupling shaft 2 is positioned at the front end side of guide parts 19 for travelling the trailer into a jig D. Thereby, the wheels 18 of the trailer B are positioned widthwise by means of the front end parts 19a of the guide parts 19 and the guide parts 19, and then are stopped by being abutted to stopper parts 20 so that the wheels 18 are positioned in a running position. Next, an unmanned tractor is moved back in the direction F, and then, the coupling shaft 2 is fitted into a receiving hole 6 in a connecting plate 7 within a coupler 1 mounted to the rear end of the unmanned tractor. Therefore, a latch 9 is rotated clockwise, the front end of a pressure receiving part 9b is hooked onto the hook part of a dog 11 which is biased counterclockwise by a spring 15, thereby the coupling is completed. |
