CAJ | 학술논문

振动冲击夯活塞杆顶端的防松装置有单螺母开口销结构、双螺母结构、双螺母锁片结构和U形卡结构等几种形式．其中，螺母结构使用时易出现断裂、脱丝和切丝现象，采用这类结构的国产冲击夯的平均无故障工作时间通常为70 h～80 h，而采用U形卡结构的冲击夯则可达150 h以上，大大优于行业标准规定的合格要求，从而提高了振动冲击夯的作业可靠度．但与螺母结构相比，U形卡结构的工作噪声要高出2 dB～3 dB，略超过行业标准要求，故对如何降低工作噪声应进一步研究、解决．
진동충격항활새간정단적방송장치유단라모개구소결구、쌍라모결구、쌍라모쇄편결구화U형잡결구등궤충형식．기중，라모결구사용시역출현단렬、탈사화절사현상，채용저류결구적국산충격항적평균무고장공작시간통상위70 h～80 h，이채용U형잡결구적충격항칙가체150 h이상，대대우우행업표준규정적합격요구，종이제고료진동충격항적작업가고도．단여라모결구상비，U형잡결구적공작조성요고출2 dB～3 dB，략초과행업표준요구，고대여하강저공작조성응진일보연구、해결．
There are several loosenessproof construtions of piston rod end, such as the nut and lock pin, the double-nuts, the lock washer and U shape lock pawl in vibrating impact tamper. The nut structures are easily broken, loosened and teeth damaged in use. The vibrating impact lamper only works reliably for 70 h～80 h with the nut structures. If using U shape lock pawl, the vibrating impact lamper can work reliably more than 150 h, which is superior to organization standard. This structure improves the reliability compared with the structure with nut, but it raises the noise about 2 dB～3 dB, which exceeds the organization standard. How to lower the noise is a problem to be further researched.