In order to reduce the labor intensity of researchers and improve experimental efficiency, this instrument has been developed by our factory after several years of research and development based on the opinions of our customers. Drawing on the advantages of national data, we have updated it on the basis of chain transmission and adopted gear transmission to avoid the phenomenon of hammer dropping and inability to lift. It has the advantages of automatic counting, automatic control, automatic shutdown, and automatic cyclic operation. Can be used by transportation research departments, mathematical experiments, and engineering construction units for laboratory and on-site experiments.