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天津立林石油机械有限公司

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№ CN122980823AInvention
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螺杆钻具用双喉箍密封球柱万向轴

本发明属于螺杆钻具技术领域，更具体地说，特别涉及一种螺杆钻具用双喉箍密封球柱万向轴，包括上活铰、下活铰、连杆、球柱传动副、密封护套、上喉箍和下喉箍；所述连杆的上端与上活铰之间、连杆的下端与下活铰之间分别设有所述球柱传动副；所述密封护套包覆所述球柱传动副；所述上喉箍和下喉箍分别箍紧于密封护套的两端；所述密封护套两端的外壁上分别设有箍紧定位环槽，所述上喉箍和下喉箍分别卡装于对应的箍紧定位环槽内；所述密封护套的内壁设有环形密封槽，所述环形密封槽与所述锁紧套的外壁贴合密封。本发明有效防止了喉箍在井下振动冲击环境下的轴向滑移和周向松动，显著提升了紧固防松性能与密封护套的定位可靠性。

❖天津立林石油机械有限公司李大涛; 黄玉明; 王军利; 罗绪良Oct 27, 2026§ 1/6 ClaimsE21B 17/20 (2006.01), E21B 7/06 (2006.01), E21B 12/00 (2006.01) +2