| 摘要 |
PROBLEM TO BE SOLVED: To improve constitution for lubricating a hydraulic power taking-out shaft of an engine. SOLUTION: Both end parts of the hydraulic power taking-out shaft 23 are pivotally supported on a gear case 28 which is brought into continuously contact with a crankcase 1, through bearings 27, input shafts 24a, 25a of a main hydraulic pump 24 and an auxiliary hydraulic pump 25 are connected to spines 23a, 23a disposed on both ends of a hollow part 23a of the hydraulic power taking-out shaft 23 by means of spline fitting, the neighborhood of one spline 23b in the hollow part 23a of the hydraulic power taking-out shaft 23 is constituted in a large diameter part 23c, a radial direction oil hole 30a communicated with the hollow part 23a is communicated with a center part of the large diameter part 23c, a cross oil hole 30b is connected to an outer peripheral side end part of the radial direction oil hole 30a from the upper side in the rotational direction so as to constitute a bending oil hole 30. In association with rotation of the hydraulic power taking-out shaft 23, much lubricating oil flows from the bending oil hole 30 into the hollow part 23a of the hydraulic power taking- out shaft 23, and it is invaded and lubricated to one spline 23b. The lubricating oil flows the other spline 23b passing the hollow part 23a, and then, it is invaded to lubricate. It is thus possible to smoothly lubricate the splines 23b, and it is also possible to prevent abnormal abrasion. |
