| 摘要 |
PURPOSE:To reduce a noise going into a driver's cage, by converting the displacement of a turning angle of an operation lever to a reciprocating motion of a spool of a direction changeover valve, through a connecting member for moving the opening part of the wall surface of the driver's cage only in the right-angled direction against the wall surface. CONSTITUTION:On the wall surface of a driver's cage of a construction equipment, an opening part 13 is provided, and also a connecting member 14 for moving its opening part 13 only in the right-angled direction against the wall surface is provided so that the displacement of a turning angle of an operation lever 5 is converted to a reciprocating motion of a spool of a direction changeover valve through said connecting member 14. For instance, on the lower part of the operation lever 5, a projecting part 17 is provided at an almost right angle, the first long hole 18 is provided on this part 17, also an L-member 21 is provided on the outside of the driver's cage so that it can be turned, a connecting rod 10 for moving the spool of the direction changeover valve is coupled with its one end with a pin, and the second long hole 24 is provided on the other end part. Subsequently, both ends of the connecting member 14 are fitted into said long holes 18, 24 through pins 19, 25, respectively. |
