Telescopic locking device

The utility model discloses a telescopic locking device. Comprising a short section, a first pin, a shaft sleeve, a compression spring, a second pin, a crossover coupling and a sleeve/jackhammer sleeve head, the short section is connected with the first pin in a matched mode through a shaft and a hole, the compression spring is connected with a hole corresponding to the shaft sleeve, the conversion connector is connected with the shaft sleeve through a second pin, and the sleeve/jackhammer sleeve head is connected with the conversion connector in a matched mode. The device is simple in structure, light in weight and easy and convenient to operate, and construction efficiency is improved. 本实用新型公开了一种可伸缩锁紧装置。包括短节、第一销、轴套、压缩弹簧、第二销、转换接头、套筒/风炮套头；所述短节与所述第一销通过轴、孔配合连接，所述压缩弹簧与所述轴套对应的孔连接，所述转换接头通过第二销轴套连接，所述套筒/风炮套头与所述转换接头配合连接。本实用新型结构简单、重量轻，操作简便、提高施工效率。