在建筑施工中,经常遇到在墙体上安装膨胀螺栓的情况。此种螺栓的外露长度不易控制,多半是长一点,而过长时还得锯掉,费工费时。为了解决这一难题,我们在安装膨胀螺栓过程中,加工制作了一个“筒冲子”,见下图,解决了这一难题。把拧紧螺母向外拉螺栓撑开胀管的方法, In building construction, it is often encountered that expansion bolts are installed on the wall. The exposed length of this type of bolt is not easy to control, most of it is a bit longer, and it must be sawn off when it is too long, which takes time and labor. In order to solve this problem, during the process of installing expansion bolts, we manufactured a “tube punch”. See the figure below to solve this problem. Pull the tightening nut outwards to open the expansion tube.