During drilling into hard rocks, the vibration of telescopic drillstring for the rotary drilling rig becomes more severe, which not only leads to the fracture of drillstring, but also reduces the rock-breaking efficiency, the service life, and the reliability of the rotary drilling rig. A drillstring vibration absorber for the rotary drill rig was proposed based on nonlinear targeted energy transfer technology, and the theoretical model of the absorber was adopted. By applying the instantaneous nonlinear energy absorption rate of the absorber, the vibration responses of the system were predicted on different structure parameters and impact amplitudes. To evaluate the feasibility of the absorber, experiments were carried out. Moreover, the amplitude decrease rate was generated for various working conditions. Furthermore, the analytical results were verified by the experiment. The results indicate that the absorber has a distinct effect on vibration reduction.

在硬岩中钻进时，旋转钻机的伸缩钻柱振动会变得更加剧烈，不仅导致钻柱断裂，而且降低了凿岩效率，使用寿命和旋转钻探的可靠性。钻机 基于非线性目标能量传递技术，提出了一种用于旋转钻机的钻柱减振器，并采用了该减振器的理论模型。通过应用吸收器的瞬时非线性能量吸收率，可以预测系统在不同结构参数和冲击振幅下的振动响应。为了评估吸收器的可行性，进行了实验。而且，在各种工作条件下都产生了振幅下降率。此外，实验验证了分析结果。结果表明，该吸收器对减振具有明显的作用。