A rotary drilling bit capable of quickly sampling and determining the depth of penetration into rock
By designing a cylinder, sampling sleeve, and power steering mechanism on the rotary drilling bit, rapid switching between drilling and sampling operations is achieved, solving the problem of accurate judgment of rock penetration depth in rotary drilling and improving construction efficiency and hole quality.
CN122407112APending Publication Date: 2026-07-17CHINA RAILWAY URBAN DEVELOPMENT INVESTMENT GROUP CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA RAILWAY URBAN DEVELOPMENT INVESTMENT GROUP CO LTD
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-17
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Figure CN122407112A_ABST
Abstract
本发明公开了一种可快速取样判断入岩深度的旋挖钻头，涉及桩基旋挖成孔施工技术领域，包括筒体，筒体侧壁处沿其径向滑动穿设有取样套筒；动力转向机构，设于筒体内，动力转向机构用于驱动取样套筒移动；钻杆，其上端与驱动装置的输出端连接，下端滑动穿设筒体的顶部，钻杆被配置为具有第一工作状态和第二工作状态，第一工作状态下，钻杆与筒体锁止带动筒体转动；第二工作状态下，钻杆与动力转向机构锁止带动动力转向机构运动；钻具，设置于筒体底部。本发明通过钻杆、取样套筒、动力转向机构和钻具的配合，使得该旋挖钻头能够在钻孔和取样之间快速切换，提高土层判断准确性。
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