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Hollow spiral anchor drill bit for electric or communication iron tower
A hollow spiral anchor drill bit for an electric power or communication iron tower comprises a rod body in the center and a spiral blade fixedly arranged on the outer cylindrical face of the rod body in a sleeving mode, the rod body is a hollow rod body with the lower end closed and the upper end open, a spiral hollow structure cavity is formed in the spiral blade, and a side hole communicated with the cavity is formed in the side face of the hollow rod body. A plurality of slurry outlets are formed in the outer edge of the spiral blade. After the spiral anchor drill bit is screwed into soft soil, cement paste or concrete paste is injected through the upper end of the rod body at high pressure, the paste enters the soil near the spiral blade through the side hole, the cavity and the paste outlet to fill a gap between the edge of the blade and the soil, and a grouting diffusion area is formed around the edge of the blade; slurry is injected into the key position where the blades and soil generate mutual resistance, when the slurry is solidified, concrete blocks or cement bodies wrapping the edges of the blades are formed firstly, in this way, the holding force of the spiral anchor drill bit and soft soil is increased, the tensile capacity and the anti-pressure capacity of the spiral anchor drill bit are improved, the bearing capacity and stability of an iron tower can be improved, and the service life of the iron tower is prolonged. After the slurry in the inner cavity of the blade is solidified, the structural strength of the blade can be improved, the blade is not prone to deformation, and the bearing capacity and stability of the iron tower are improved.
一种电力或通信铁塔用空心螺旋锚钻头，包括中心的杆体和固定套装在杆体外圆柱面上的螺旋叶片，所述的杆体为下端封闭、上端开口的空心杆体，所述的螺旋叶片的内部为螺旋的空心结构空腔，空心杆体侧面设有与该空腔连通的侧孔，所述的螺旋叶片的外边缘设有若干个出浆口。该螺旋锚钻头拧入到软质土壤后，通过其杆体的上端高压注入水泥浆或者混凝土浆，浆体通过侧孔、空腔、出浆口进入到螺旋叶片附近的土壤中，填充叶片边缘与土壤之间的空隙，在叶片边缘的周围形成注浆的弥漫扩散区，将浆体注入到了叶片与土壤产生相互阻力的关键位置，当浆体凝固后首要形成包裹在叶片边缘上的混凝土块或者水泥体，这样增加了螺旋锚钻头与软质土壤的握持力，增大其抗拉和抗压能力，进而可以增加铁塔的承载能力和稳固性，位于叶片内部空腔的浆体在凝固后，能够提升叶片自身的结构强度，不易变形，也提升了铁塔的承载能力和稳固性。
Hollow spiral anchor drill bit for electric or communication iron tower
A hollow spiral anchor drill bit for an electric power or communication iron tower comprises a rod body in the center and a spiral blade fixedly arranged on the outer cylindrical face of the rod body in a sleeving mode, the rod body is a hollow rod body with the lower end closed and the upper end open, a spiral hollow structure cavity is formed in the spiral blade, and a side hole communicated with the cavity is formed in the side face of the hollow rod body. A plurality of slurry outlets are formed in the outer edge of the spiral blade. After the spiral anchor drill bit is screwed into soft soil, cement paste or concrete paste is injected through the upper end of the rod body at high pressure, the paste enters the soil near the spiral blade through the side hole, the cavity and the paste outlet to fill a gap between the edge of the blade and the soil, and a grouting diffusion area is formed around the edge of the blade; slurry is injected into the key position where the blades and soil generate mutual resistance, when the slurry is solidified, concrete blocks or cement bodies wrapping the edges of the blades are formed firstly, in this way, the holding force of the spiral anchor drill bit and soft soil is increased, the tensile capacity and the anti-pressure capacity of the spiral anchor drill bit are improved, the bearing capacity and stability of an iron tower can be improved, and the service life of the iron tower is prolonged. After the slurry in the inner cavity of the blade is solidified, the structural strength of the blade can be improved, the blade is not prone to deformation, and the bearing capacity and stability of the iron tower are improved.
一种电力或通信铁塔用空心螺旋锚钻头，包括中心的杆体和固定套装在杆体外圆柱面上的螺旋叶片，所述的杆体为下端封闭、上端开口的空心杆体，所述的螺旋叶片的内部为螺旋的空心结构空腔，空心杆体侧面设有与该空腔连通的侧孔，所述的螺旋叶片的外边缘设有若干个出浆口。该螺旋锚钻头拧入到软质土壤后，通过其杆体的上端高压注入水泥浆或者混凝土浆，浆体通过侧孔、空腔、出浆口进入到螺旋叶片附近的土壤中，填充叶片边缘与土壤之间的空隙，在叶片边缘的周围形成注浆的弥漫扩散区，将浆体注入到了叶片与土壤产生相互阻力的关键位置，当浆体凝固后首要形成包裹在叶片边缘上的混凝土块或者水泥体，这样增加了螺旋锚钻头与软质土壤的握持力，增大其抗拉和抗压能力，进而可以增加铁塔的承载能力和稳固性，位于叶片内部空腔的浆体在凝固后，能够提升叶片自身的结构强度，不易变形，也提升了铁塔的承载能力和稳固性。
Hollow spiral anchor drill bit for electric or communication iron tower
电力或通信铁塔用空心螺旋锚钻头
ZHANG QINGHUA (author)
2024-01-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2025
| European Patent Office | 2023