| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a reciprocating pump device capable of reducing bending stress acting on a crank shaft. <P>SOLUTION: In the reciprocating pump device 10 provided with a drive part 30 including a crank shaft driving a piston 14 of a reciprocating pump 12 and a reduction gear part 42 arranged with adjoining the drive part and including a large gear 44 attached on the crank shaft and a small gear 46 meshing with the large gear and attached to the input shaft 48 to which power is input, a first bearing 58 and a second bearing 56 rotatably supporting the input shaft are collected on a side opposite to the drive part 30 and the input shaft 48 is supported in a cantilever style. Consequently, the small gear is put close to the drive part and total length of the crank shaft is shortened to reduce bending stress. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
