| 摘要 |
PROBLEM TO BE SOLVED: To secure performance of a bearing under a very bad environment by preventing early occurrence of wear, seizure, rust and the like. SOLUTION: This structure is provided with a tilt link 2 of which the upper end is swingably connected to a support member 10 at a main frame rear end part via a first bearing 22, a lift arm of which front end is rotatably connected to an upper end of the tilt link via a second bearing, a tail gate rotatably connected to a rear end of the lift arm via a third bearing, a tilt cylinder rotatably connected to the support member and the tail gate via a fourth bearing and a fifth bearing, a lift cylinder rotatably connected to a lower end of the tilt link and a roughly center part rear end side of the lift arm via a sixth bearing and a seventh bearing. Each bearing is provided with: a pair of resin bushings 22a, 22a insertion fitted to an inner circumference part of a boss 2a from both sides in an axial direction; and an O-ring 22b sealing a first pin 21 at an outside end in an insertion fitting direction of an inner circumference part of the each resin bushing. COPYRIGHT: (C)2004,JPO
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