This invention relates to the field of downhole operation technology and is a multi-directional rock-breaking vibration device. It includes an
exciter outer cylinder, a drive unit, an eccentric wheel, a
drill bit shaft, a
piston liner, and a counterweight. The drive unit, eccentric wheel, and
drill bit shaft are sequentially and sequentially mounted from top to bottom inside the
exciter outer cylinder. The output end of the drive unit is connected to the upper end of the eccentric wheel, and the lower end of the eccentric wheel is connected to the upper end of the
drill bit shaft. The lower end of the
drill bit shaft is located below the
exciter outer cylinder. This invention has a reasonable and compact structure and is easy to use. The drive unit drives the eccentric wheel to rotate, generating circumferential vibration. During the rotation of the eccentric wheel,
static friction is converted into dynamic friction, causing circumferential vibration of the
drill bit shaft. This vibration of the
drill bit shaft causes the drill bit to generate circumferential
impact. The counterweight and eccentric wheel respectively achieve axial and circumferential
impact, completing multi-dimensional
impact and assisting the drill bit in
rock breaking. It features stability, reliability, and good
impact effect.