| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent oil leakage of a screw member for setting pump characteristics in a variable displacement hydraulic pump.SOLUTION: In a swash plate type hydraulic pump 10, a shaft 21 is supported on a pump housing 22 and a cover 23 via bearings 24, 25. The shaft 21 is provided with a cylinder barrel 27 which is spline-fitted to the shaft with a spline 26 and is rotatable simultaneously with the shaft 21, and a valve plate 28 is interposed coaxially with the shaft 21 between the cylinder barrel 27 and the cover 23 to be slidable to the cylinder barrel 27. The swash plate type hydraulic pump has a spring 37 which imparts resilient force to an upper part of a swash plate 33 via a spring receiver 38, a spring guide 48 supporting the spring 37, and a screw member 11 for regulating the resilient force of the spring 37. In the screw member 11, special nylon is attached to a screw part.</p> |
