按照功能对常见的测井仪推靠器进行了分类，分析了每一类推靠器的结构和特点。
Sidewall contact device was classified by function, the configuration and features of each kind device were analyzed.
目前使用的液压推靠器中普遍采用了球形密封方法，实践证明该方法常有渗、漏油现象发生。
The ordinary spherical seal method is used in hydraulic swing arm, but its practise proves that the phenomenon of permeating and leaking oil often occur.
本发明公开了一种八臂机械推靠器，包括：电动机、离合器、滚柱丝杠、传动部件、推靠臂；
The invention discloses a mechanical eccentering arm with eight arms including a motor, a clutch, a roller threaded spindle, drive parts and an eccentering arm;
本发明公开了一种八臂机械推靠器，包括：电动机、离合器、滚柱丝杠、传动部件、推靠臂；
The invention discloses a mechanical eccentering arm with eight arms including a motor, a clutch, a roller threaded spindle, drive parts and an eccentering arm;
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