A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Compound expansion pre-stressed anchor rod
The invention provides a compound expansion pre-stressed anchor rod, relates to the technical field of anchor rods, and solves the problems that the initial anchoring force of the anchor rod in a rock anchor hole is insufficient and the anchoring effect in a mudstone anchor hole is poor. One end of the anchor rod body is connected with an expansion end, the expansion end comprises an inner shell and an outer shell movably arranged on the inner shell in a sleeving mode, the outer shell and the inner shell are each provided with a plurality of opening portions, the anchor rod body is movably sleeved with the inner shell, barb protrusions are annularly arranged at the end of the anchor rod body, and barb groove sets are arranged on the inner sides of the opening portions of the inner shell. And the barb groove groups are arranged in an inverted trapezoidal shape. The anchor rod body extends into the inner shell to expand and expand the expanding part of the inner shell, the expanding part of the outer shell is driven to expand and expand, and first expansion operation is achieved; the anchor rod body is pulled, the barb protrusions on the anchor rod body are matched with the barb groove sets to pull the inner shell to move towards the outer side, the expanded opening portion of the inner shell continues to open the opening portion of the outer shell, secondary expansion is achieved, the friction force between the anchor rod and an anchor hole is increased, and the anchoring effect is improved.
本发明提供了一种复式膨胀预应力锚杆，涉及锚杆技术领域，解决了锚杆在岩石锚孔中的初锚力不足以及在泥石锚孔中锚固效果不佳的问题。其包括锚杆体的一端连接有膨胀端头，膨胀端头包括内壳以及活动套设在内壳上的外壳，外壳和内壳均设置有数个撑开部，内壳活动套设在锚杆体上，锚杆体的端部环形设置有倒刺凸起，内壳的撑开部内侧设置有倒刺槽组，倒刺槽组为倒梯形设置。锚杆体伸入内壳中将内壳的撑开部膨胀撑开，带动外壳的撑开部膨胀撑开，实现第一次的膨胀操作；拉动锚杆体，使锚杆体上的倒刺凸起配合倒刺槽组拉动内壳向外侧移动，已膨胀的内壳撑开部对外壳的撑开部继续撑开，实现第二次膨胀，增大了锚杆与锚孔的摩擦力，增加锚固效果。
Compound expansion pre-stressed anchor rod
The invention provides a compound expansion pre-stressed anchor rod, relates to the technical field of anchor rods, and solves the problems that the initial anchoring force of the anchor rod in a rock anchor hole is insufficient and the anchoring effect in a mudstone anchor hole is poor. One end of the anchor rod body is connected with an expansion end, the expansion end comprises an inner shell and an outer shell movably arranged on the inner shell in a sleeving mode, the outer shell and the inner shell are each provided with a plurality of opening portions, the anchor rod body is movably sleeved with the inner shell, barb protrusions are annularly arranged at the end of the anchor rod body, and barb groove sets are arranged on the inner sides of the opening portions of the inner shell. And the barb groove groups are arranged in an inverted trapezoidal shape. The anchor rod body extends into the inner shell to expand and expand the expanding part of the inner shell, the expanding part of the outer shell is driven to expand and expand, and first expansion operation is achieved; the anchor rod body is pulled, the barb protrusions on the anchor rod body are matched with the barb groove sets to pull the inner shell to move towards the outer side, the expanded opening portion of the inner shell continues to open the opening portion of the outer shell, secondary expansion is achieved, the friction force between the anchor rod and an anchor hole is increased, and the anchoring effect is improved.
本发明提供了一种复式膨胀预应力锚杆，涉及锚杆技术领域，解决了锚杆在岩石锚孔中的初锚力不足以及在泥石锚孔中锚固效果不佳的问题。其包括锚杆体的一端连接有膨胀端头，膨胀端头包括内壳以及活动套设在内壳上的外壳，外壳和内壳均设置有数个撑开部，内壳活动套设在锚杆体上，锚杆体的端部环形设置有倒刺凸起，内壳的撑开部内侧设置有倒刺槽组，倒刺槽组为倒梯形设置。锚杆体伸入内壳中将内壳的撑开部膨胀撑开，带动外壳的撑开部膨胀撑开，实现第一次的膨胀操作；拉动锚杆体，使锚杆体上的倒刺凸起配合倒刺槽组拉动内壳向外侧移动，已膨胀的内壳撑开部对外壳的撑开部继续撑开，实现第二次膨胀，增大了锚杆与锚孔的摩擦力，增加锚固效果。
Compound expansion pre-stressed anchor rod
一种复式膨胀预应力锚杆
WAN YONG (author) / TANG KEXING (author) / YANG GUIYONG (author) / CHEN ZILONG (author) / XU YU (author) / PEI ZUAN (author) / YUAN JINKE (author) / WANG CHENG (author)
2023-06-27
Patent
Electronic Resource
Chinese
Rapid construction method for expansion shell type pre-stressed anchor rod
| European Patent Office | 2021