A bit with an expanded bottom
CN224871204UActive Publication Date: 2026-10-20MCC GEOLOGICAL EXPLORATION & GEOTECHNICAL ENG CO LTD
View PDF 0 Cites 0 Cited by
Patent Information
- Application Number
- CN202522270877.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-27
AI Technical Summary
Technical Problem
然而，对于不同的基桩和扩底施工方案需要单独定制特定的扩底钻头，扩底钻头的适用性较差、生产成本高；扩底作业时，由于桩底扩孔段的孔径与灌注桩上部的孔径之间存在差异，切削下来的土清理不便、井底留存的沉渣量较多、增加了后续清孔的难度
Benefits of technology
[0019]从上述技术方案可以看出，本实用新型提供了一种扩底钻头，适用于建筑基桩的灌注桩的扩底施工作业；所述扩底钻头包括安装于所述连杆组件上的限位组件以及设于所述连杆组件上的刮板；使用时，由所述升降驱动件驱动所述限位挡块沿着竖直方向移动至预设的位置，当所述活动套移动至接触于所述限位挡块时，所述限位挡块对所述活动套进行支撑、限位，避免了活动套在施工过程中发生位移、提升了稳定性，进而保证了桩底的直径尺寸和垂直度的稳定性；同时，使用时可根据使用需求将所述限位挡块设置在符合基桩施工要求的位置上，以使得所述扩底钻头能够适用于不同孔径的要求，提升了所述扩底钻头的适用性；所述刮板的设置能够对桩底的土进行刮动，避免土渣在不易清理的区域，对减少孔底的沉渣起到辅助作用。
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224871204U_ABST
Abstract
The utility model provides an expand bottom drill bit, including top seat, base, sleeve rod subassembly, limit component and connecting rod subassembly, wherein, sleeve rod subassembly includes fixed rod and sets up the movable sleeve outside fixed rod, and limit component is located in the inside of fixed rod, limit component includes lift drive part and is driven along the limit stopper of vertical direction movement by lift drive part, limit stopper is set out from fixed rod, and the first sliding slot of being passed through is set up to limit stopper on fixed rod, when movable sleeve bottom end contact in limit stopper, limit stopper carries out the stopper of movable sleeve, connecting rod subassembly includes the first connecting rod and second connecting rod of mutual articulation, is equipped with the pick on the first connecting rod, is equipped with the scraper for scraping the soil residue of pile bottom on the second connecting rod. The utility model discloses expand bottom drill bit strong applicability, can satisfy different reaming size requirement, and reduce hole bottom sediment.
Need to check novelty before this filing date? Find Prior Art