A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Lifting type variable-diameter self-protection-wall hole-forming cast-in-place pile drill bit and hole drilling method
The invention relates to the technical field of constructional engineering, in particular to a lifting type variable-diameter self-protection-wall pore-forming cast-in-place pile drill bit and a drilling method. Comprising a main drill part, a drill bit is arranged at the lower end of the main drill part, and the outer wall of the main drill part is sleeved with a retaining wall outer cylinder; a lifting oil cylinder is arranged on the main drill part and is connected with the protective wall outer barrel; notches are distributed in the protective wall outer cylinder, and blades are arranged in the notches; the main drill part is provided with a pushing piece used for controlling the blades to be opened and closed. One side of each blade is provided with a cutting edge, and the other side of each blade is provided with a grout outlet hole for outputting concrete grout and a liquid outlet hole for outputting an accelerator; a mud inlet hole is formed in the lower end of the main drill part, and a mud suction pipe is arranged in the main drill part and communicated with the mud inlet hole. According to the invention, the self-protection wall of the cement-mixed soil can be realized, and the cement-mixed soil protection wall can be rapidly formed by injecting cement paste and an accelerator into the protection wall layer during hole forming.
本发明涉及建筑工程技术领域，具体为一种升降式可变径自护壁成孔灌注桩钻头及钻孔方法。包括主钻部件，主钻部件下端设置有钻头，所述主钻部件外壁套有护壁外筒；所述主钻部件上设置有升降油缸连接护壁外筒；所述护壁外筒上分布有槽口，槽口内设置有叶片；所述主钻部件上设置有用于控制叶片张开合拢的推件；所述叶片一侧设置有刀口，另一侧设置有用于输出混凝土浆的出浆孔和用于输出速凝剂的出液孔；所述主钻部件下端设置有进泥孔，内部设置有吸泥管与进泥孔连通。本发明能够实现水泥搅拌土自护壁，成孔的同时可实现在护壁层注入水泥浆和速凝剂搅拌快速形成水泥搅拌土护壁。
Lifting type variable-diameter self-protection-wall hole-forming cast-in-place pile drill bit and hole drilling method
The invention relates to the technical field of constructional engineering, in particular to a lifting type variable-diameter self-protection-wall pore-forming cast-in-place pile drill bit and a drilling method. Comprising a main drill part, a drill bit is arranged at the lower end of the main drill part, and the outer wall of the main drill part is sleeved with a retaining wall outer cylinder; a lifting oil cylinder is arranged on the main drill part and is connected with the protective wall outer barrel; notches are distributed in the protective wall outer cylinder, and blades are arranged in the notches; the main drill part is provided with a pushing piece used for controlling the blades to be opened and closed. One side of each blade is provided with a cutting edge, and the other side of each blade is provided with a grout outlet hole for outputting concrete grout and a liquid outlet hole for outputting an accelerator; a mud inlet hole is formed in the lower end of the main drill part, and a mud suction pipe is arranged in the main drill part and communicated with the mud inlet hole. According to the invention, the self-protection wall of the cement-mixed soil can be realized, and the cement-mixed soil protection wall can be rapidly formed by injecting cement paste and an accelerator into the protection wall layer during hole forming.
本发明涉及建筑工程技术领域，具体为一种升降式可变径自护壁成孔灌注桩钻头及钻孔方法。包括主钻部件，主钻部件下端设置有钻头，所述主钻部件外壁套有护壁外筒；所述主钻部件上设置有升降油缸连接护壁外筒；所述护壁外筒上分布有槽口，槽口内设置有叶片；所述主钻部件上设置有用于控制叶片张开合拢的推件；所述叶片一侧设置有刀口，另一侧设置有用于输出混凝土浆的出浆孔和用于输出速凝剂的出液孔；所述主钻部件下端设置有进泥孔，内部设置有吸泥管与进泥孔连通。本发明能够实现水泥搅拌土自护壁，成孔的同时可实现在护壁层注入水泥浆和速凝剂搅拌快速形成水泥搅拌土护壁。
Lifting type variable-diameter self-protection-wall hole-forming cast-in-place pile drill bit and hole drilling method
升降式可变径自护壁成孔灌注桩钻头及钻孔方法
ZENG YONGLI (author)
2022-07-01
Patent
Electronic Resource
Chinese
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