Three-section assembled piston rod

The utility model relates to the technical field of piston rods, in particular to a three-section assembled piston rod, which comprises a first section of piston rod, a second section of piston rod, athird section of piston rod and a bolt, and is characterized in that the first section of piston rod is fixedly connected with the second section of piston rod through the bolt; and the second section of piston rod is fixedly connected with the third section of piston rod through threads. The piston rod has the advantages that due to the design of the threaded connector and the plug pin, the damaged part of the piston rod can be replaced according to actual use conditions, scrapping of the whole piston rod is eradicated, and energy waste is reduced. 本实用新型涉及活塞杆技术领域，特别涉及一种三节组装式活塞杆，包括第一节活塞杆、第二节活塞杆、第三节活塞杆、插销，其特征在于：所述第一节活塞杆与第二节活塞杆通过插销进行固定连接；所述第二节活塞杆与第三节活塞杆通过螺纹进行固定连接。本实用新型的有益效果为：螺纹接口及插销的设计，可根据实际使用情况更换活塞杆的损坏部分，杜绝了整条活塞杆的报废，以减少能源浪费。