| 摘要 |
PURPOSE:To provide a car height adjusting device wherein a master senser and an auxiliary senser are arranged in a spaced-apart relationship in the axial direction on the wall surface of a protective outer cylinder of a buffer, and a bar magnet is arranged in opposite to the sensers on the outer side to secure the mounting of these sensers, thereby detecting correctly the maximum reciprocating step of the buffer. CONSTITUTION:When a magnet 9 and sensers 17 through 20 are in the correlative positions as illustrated in the drawing, the sensers 17 through 20 generate output signals, and open an air supply valve 14 is opened through OR circuits 21 and 22, AND circuit 33, and NOR circuit 24 and close an exhaust valve 15, pressure within a sealing zone 12 increasing by high-pressure air from a compressor 16, the outer cylinder 1 of the buffer moving in the right hand to move the magnet 9 in the right hand. In this manner, the magnet 9 moves, and at its left end a point indicated by A is turned ''ON'' and another point B is turned ''OFF'' and respective valves 14 and 15 are closed and held at their positions. Furthermore, when the magnet 9 is at the right hand of the senser 17, the senser does not operate, the exhaust valve 15 is opened, the sealing zone is pressure-reduced, and the outer cylinder 1 is returned in the left hand. Similarly, the outer cylinder 1 is moved in the right hand by the correlative position of the sensers 19 and 20 and the magnet 9. |
