Diaphragm pump oil cylinder piston rod locking structure

The utility model belongs to the technical field of diaphragm pumps, and particularly relates to a diaphragm pump oil cylinder piston rod locking structure. The diaphragm pump oil cylinder piston rod locking structure is simple in structure, stable and reliable. The piston comprises a piston body, a piston rod is arranged in the piston body, and one end of the piston rod extends out of a center hole of the piston body and is sequentially connected with a thin nut and a thick nut through threads. A clamping groove corresponding to the jackscrew screw hole is formed in the piston rod, and a jackscrew body matched with the clamping groove is arranged in the jackscrew screw hole. 一种隔膜泵油缸活塞杆锁紧结构属于隔膜泵技术领域，具体涉及一种隔膜泵油缸活塞杆锁紧结构。本实用新型提出一种结构简单，稳定可靠的隔膜泵油缸活塞杆锁紧结构。本实用新型包括活塞体，活塞体内为活塞杆，活塞杆的一端由活塞体的中心孔伸出，通过螺纹依次与一薄螺母和一厚螺母相连，其特征在于：所述厚螺母的端部设置有连接套，连接套上设置有顶丝螺孔，所述活塞杆上设置有与顶丝螺孔对应的卡槽，顶丝螺孔内设置有与卡槽配合的顶丝体。