A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses an expanded-base self-drilling type prestressed hollow expanded-base anchor rod with built-in blades. The expanded-base self-drilling type prestressed hollow expanded-base anchor rod comprises an anchor head and an anchor rod body in transmission connection with the anchor head. At least two guide holes communicated with the interior of the anchor head are uniformly formed in the anchor head, bottom expanding blades are arranged in the guide holes in a sliding manner, one ends of the bottom expanding blades are retracted into the anchor head, and the other ends of the bottom expanding blades do not exceed orifices of the guide holes; when the anchor head is located at the bottom of the anchor hole, the anchor rod body rotates and advances in the axial direction of the anchor rod body to eject the bottom expanding blade out of the guide hole, and when the bottom expanding blade is in place, the anchor rod body rotates to drive the anchor head and the bottom expanding blade to synchronously rotate for bottom expanding. The anchor head is in threaded connection with the anchor rod body, and the retaining part is arranged at the end of the anchor rod body, so that drilling is achieved when the anchor rod body rotates in the reverse direction, and bottom expanding blades are ejected out and bottom expanding is achieved when the anchor rod body rotates in the forward direction; the drilling driving of the anchor head and the rotation driving of the bottom expanding blade and the bottom expanding are respectively realized through a thread pair; the anchor rod integrates anchor hole drilling, bottom expanding, prestress applying and grouting.
本发明公开了一种扩底内藏刀片自钻式预应力中空扩底锚杆，包括锚头、与锚头传动连接的锚杆体；所述锚头上均匀设有至少两个和其内部连通的导向孔，所述导向孔内滑动设有扩底刀片，所述扩底刀片的一端收回至锚头内，扩底刀片的另一端不超过导向孔的孔口；锚头位于锚孔的孔底时，锚杆体转动并沿其轴向前进将扩底刀片顶出导向孔，扩底刀片到位时，锚杆体转动带动锚头及扩底刀片同步转动扩底。本发明通过将锚头与锚杆体螺纹连接，并在锚杆体端部设置止退部实现锚杆体反向转动时钻进，正转时顶出扩底刀片及扩底；通过螺纹副分别实现锚头的钻进驱动以及扩底刀片及扩底的旋转驱动；本发明的锚杆集钻锚孔、扩底、施加预应力与注浆于一体。
The invention discloses an expanded-base self-drilling type prestressed hollow expanded-base anchor rod with built-in blades. The expanded-base self-drilling type prestressed hollow expanded-base anchor rod comprises an anchor head and an anchor rod body in transmission connection with the anchor head. At least two guide holes communicated with the interior of the anchor head are uniformly formed in the anchor head, bottom expanding blades are arranged in the guide holes in a sliding manner, one ends of the bottom expanding blades are retracted into the anchor head, and the other ends of the bottom expanding blades do not exceed orifices of the guide holes; when the anchor head is located at the bottom of the anchor hole, the anchor rod body rotates and advances in the axial direction of the anchor rod body to eject the bottom expanding blade out of the guide hole, and when the bottom expanding blade is in place, the anchor rod body rotates to drive the anchor head and the bottom expanding blade to synchronously rotate for bottom expanding. The anchor head is in threaded connection with the anchor rod body, and the retaining part is arranged at the end of the anchor rod body, so that drilling is achieved when the anchor rod body rotates in the reverse direction, and bottom expanding blades are ejected out and bottom expanding is achieved when the anchor rod body rotates in the forward direction; the drilling driving of the anchor head and the rotation driving of the bottom expanding blade and the bottom expanding are respectively realized through a thread pair; the anchor rod integrates anchor hole drilling, bottom expanding, prestress applying and grouting.
本发明公开了一种扩底内藏刀片自钻式预应力中空扩底锚杆，包括锚头、与锚头传动连接的锚杆体；所述锚头上均匀设有至少两个和其内部连通的导向孔，所述导向孔内滑动设有扩底刀片，所述扩底刀片的一端收回至锚头内，扩底刀片的另一端不超过导向孔的孔口；锚头位于锚孔的孔底时，锚杆体转动并沿其轴向前进将扩底刀片顶出导向孔，扩底刀片到位时，锚杆体转动带动锚头及扩底刀片同步转动扩底。本发明通过将锚头与锚杆体螺纹连接，并在锚杆体端部设置止退部实现锚杆体反向转动时钻进，正转时顶出扩底刀片及扩底；通过螺纹副分别实现锚头的钻进驱动以及扩底刀片及扩底的旋转驱动；本发明的锚杆集钻锚孔、扩底、施加预应力与注浆于一体。
Self-drilling type prestressed hollow underreamed anchor rod with built-in blade
内藏刀片自钻式预应力中空扩底锚杆
2023-07-28
Patent
Electronic Resource
Chinese
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