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发明名称
一种先锚后灌型锚杆锚头装置
摘要
本实用新型为锚杆支护系统中的先锚后灌型锚杆锚头提供了一种全新的抗拉固定装置。与传统的结构相比,由于在锚头的倒刺一侧增设了挡块,使锚头在锚孔内承受外拉力时,因挡块阻止了倒刺的变形,与锚头被推入锚孔时的倒刺变形不受挡块影响时的阻力相比,其承受的抗拔力成倍增加,这样,就可以在将装上锚头的锚杆用人力非常省力送入锚孔条件下,就获得所需的较高抗拔力,给施工带来方便。
申请公布号
CN2350526Y
申请公布日期
1999.11.24
申请号
CN98213562.9
申请日期
1998.03.21
申请人
汪德洪
发明人
汪德洪
分类号
E21D21/00
主分类号
E21D21/00
代理机构
代理人
主权项
1、一种先锚后灌型锚杆锚头装置主要由锚杆(4)、锚头(7)、倒刺(5)、挡块(6)和止浆塞(3)等组成,其特征在于锚头(7)与锚杆(4)一端通过螺纹连接,倒刺(5)、挡块(6)和锚头(7)可构成一体,挡块(6)位于倒刺(5)的相应一侧。
地址
310014浙江省杭州市大关小区南九苑3-1-502
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