采用自动落锤进行动力触探试验,能够保证重锤落距和冲击能量比较准确,并摆脱了繁重的体力劳动,因而可以提高试验的质量和效率。但是,在生产实践中也还存在一些问题,例如,使用过程中常发生导向杆退扪和折断现象,这不仅给操作带来麻烦,同时也影响了工程进度,为此,我们对落锤装置进行了一些改进,现介绍如下。 The use of automatic drop hammer for dynamic penetration test can ensure that the drop distance and impact energy of the hammer are relatively accurate and get rid of the heavy physical labor, thus improving the quality and efficiency of the test. However, there are still some problems in the production practice. For example, the guide bar retracts and breaks often occur during use. This not only causes troubles for the operation, but also affects the progress of the project. For this reason, we perform the drop hammer device. Some improvements are presented below.