| 摘要 |
PROBLEM TO BE SOLVED: To certainly stop a reciprocating pump by shutting off a power supply when a reciprocating blasting portion is deteriorated, and easily make a power shutting-off switch return. SOLUTION: In this reciprocating pump having a reciprocating vibration moving member 1, a switch operating member 21 is provided so as to move between a connecting position P1 connecting a contact point of the power shutting-off switch 25 and a shutting-off position P2 shutting off the contact point of the power shutting-off switch 25. A spring 26 energizing the switch operating member 21 to the shutting-off position P2 is provided, and a locking member 35 detachably locking the switch operating member 21 at the connecting position against the spring 26 is provided. When the amplitude of the moving member 1 becomes large, or when the center of reciprocating is shifted, the moving member 1 is collided to the locking member 35 to disengage locking of the locking member 35 from the switch operating member 21.
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