| 摘要 |
PURPOSE:To simplify a means for restricting the tilting motion of a cab by providing an ensured operating cam mechanism which consists of both a pair of rollers which are disposed at one end of a rod of a cylinder for tilting a cab and an approximately inversed L-shape cam groove which is formed in the cab. CONSTITUTION:A hydraulic type operation cylinder 14 is disposed between a chassis 11 and a cab 12, and a roller holder 34 is fixed at the end of an operation rod 31 of the cylinder 14. A pair of rollers 15 and 16 are rotatably fit to a holder 34 by pins 36 and 37 at certain intervals in the axial direction of the operation rod 31. A cam groove 17 is formed in the upper bracket 21 which is fixed to the cab 12, the contour thereof looking like an inversed approximately L-shape which consists of a cab floating groove part 38 and a cab locking part 39. Said rollers 15 and 16 are fit in the cam groove 17 and when the cab is tilted, the roller 15 is shifted from the groove part 38 to another 39 until contacting the end of the latter part 39, whereby the cab 12 may be held at the tilted position. |
