Elastic expansion nut capable of being rapidly constructed and detachable blind bolt

Abstract

The embodiment of the utility model discloses an elastic expansion nut and detachable blind bolt of quick construction, including bolt bar, the periphery of bolt bar is sleeved with expansion nut, washer and nut cap in proper order, expansion nut includes first sleeve and second sleeve, the second sleeve is located in first sleeve, the inner wall of second sleeve is provided with internal thread, the inner wall of second sleeve is provided with internal thread. The first sleeve comprises a connecting section and an expansion section, the connecting section is fixedly connected with the second sleeve, the inner diameter of the expansion section is larger than the outer diameter of the second sleeve, the expansion section inclines and extends outwards from the inner ring in the direction away from the connecting section, and a plurality of strip-shaped openings are evenly distributed in the circumference of the expansion section so that the expansion section can have elasticity. And the expansion section is close to the gasket. The utility model discloses a quickly-constructed elastic expansion nut and a detachable blind bolt, which are used for solving the technical problems that the existing blind bolt cannot be quickly mounted and dismounted, and the strength, tensile rigidity and other mechanical properties of the existing blind bolt are poor. 本实用新型实施例公开了一种快速构造的弹性膨胀螺母及可拆卸盲栓，包括螺栓杆，螺栓杆的外周依次套设有膨胀螺母、垫圈和螺帽，膨胀螺母包括第一套筒和第二套筒，第二套筒位于在第一套筒的内部，第二套筒的内壁设置有内螺纹，第一套筒包括连接段和膨胀段，连接段与所述第二套筒固定连接，膨胀段的内径大于所述第二套筒的外径，膨胀段朝向远离所述连接段的方向、自内圈向外倾斜延伸设置，膨胀段上圆周均布有若干条形开口，以使得膨胀段具有弹性，且膨胀段靠近所述垫圈。本实用新型公开了一种快速构造的弹性膨胀螺母及可拆卸盲栓，用于解决现有的盲栓无法快速安装和拆卸，以及现有盲栓的强度、抗拉刚度等力学性能不佳的技术问题。