A detachable expansion bolt consists of a screw, a circular expansion tube, a spring washer and a nut. The front of the screw has an external thread matching the nut, and the rear has a round table-shaped expansion head. The diameter of the front bottom of the expansion head is smaller than the diameter of the rear bottom, and the diameter of the back bottom of the expansion head is larger than the inner diameter of the expansion pipe. A number of strip grooves extending along the axial direction of the expansion tube and running through the rear end of the expansion tube are arranged in the rear circumferential direction of the expansion tube. The screw is sleeved in the expansion tube. The front of the screw extends from the front end of the expansion tube. The expansion head is clamped into the cavity of the expansion tube through the back end of the expansion tube. The nut and spring washer are successively installed in the screw from the front to the rear. In the front part, the front end of the outer tube wall of the expansion tube is sleeved with an annular prying plate coaxial with the expansion tube, and the front side of the prying plate is even with the front end face of the expansion tube. When the expansion bolt is dismantled, the expansion bolt can be dismantled by the prying board and the dismantling tool. The method is simple and easy to operate, and the manufacturing cost is low.
【技术实现步骤摘要】
一种可拆卸膨胀螺栓及其拆卸工具
本技术涉及一种可拆卸膨胀螺栓及其拆卸工具。
技术介绍
现有的膨胀螺栓,它包括螺杆、圆形的膨胀管、平垫圈、弹簧垫圈和螺母,螺杆的前部有与螺母相匹配的外螺纹、后部有圆台状的膨胀头,膨胀头的前侧底面的直径小于后侧底面的直径,膨胀头的后侧底面的直径大于膨胀管的内径,膨胀管的后部周向均布若干沿膨胀管轴向延伸且贯通至膨胀管后端的条形槽,螺杆套装在膨胀管内,螺杆的前部自膨胀管的前端伸出,膨胀头经膨胀管的后端卡入膨胀管的管腔内,螺母、弹簧垫圈、平垫圈由前至后地依次安装在螺杆的前部,这种结构的膨胀螺栓拆除困难,因为膨胀管上没有借力点,需要用尖嘴钳夹住膨胀管才能取出,取出的过程复杂而且费力,还有一种方式是直接将膨胀螺栓露出的部分锯断,但是这种方式不仅影响美观而且切边处还可能会划伤人员,形成安全隐患。
技术实现思路
本技术要解决的技术问题是提供一种可拆卸的膨胀螺栓,该膨胀螺栓结构简单而且方便拆卸。本技术要解决的另一个技术问题是提供该可拆卸膨胀螺栓的拆卸工具,该工具使用方便且造价低廉。为解决上述技术问题,本技术提供了一种可拆卸膨胀螺栓,它包括水平布置的螺杆、水平布置且圆形的膨胀管、弹簧垫圈和螺母,螺杆的前部有与螺母相匹配的外螺纹、后部有圆台状的膨胀头,膨胀头的前侧底面的直径小于后侧底面的直径,膨胀头的后侧底面的直径大于膨胀管的内径,膨胀管的后部周向均布若干沿膨胀管轴向延伸且贯通至膨胀管后端的条形槽,螺杆套装在膨胀管内,螺杆的前部自膨胀管的前端伸出,膨胀头经膨胀管的后端卡入膨胀管的管腔内,螺母、弹簧垫圈由前至后地依次安装在螺杆的前部。所述膨胀管的外管壁前端套 ...
【技术保护点】
1.一种可拆卸膨胀螺栓,它包括水平布置的螺杆、水平布置且圆形的膨胀管、弹簧垫圈和螺母,螺杆的前部有与螺母相匹配的外螺纹、后部有圆台状的膨胀头,膨胀头的前侧底面的直径小于后侧底面的直径,膨胀头的后侧底面的直径大于膨胀管的内径,膨胀管的后部周向均布若干沿膨胀管轴向延伸且贯通至膨胀管后端的条形槽,螺杆套装在膨胀管内,螺杆的前部自膨胀管的前端伸出,膨胀头经膨胀管的后端卡入膨胀管的管腔内,螺母、弹簧垫圈由前至后地依次安装在螺杆的前部,其特征在于:所述膨胀管的外管壁前端套装与其共轴线且环形的撬动板,撬动板的前侧面与膨胀管的前端面平齐;所述撬动板在水平面内的投影形状为前大后小的等腰梯形;对于撬动板的前侧面的外径、撬动板的后侧面的外径、膨胀管的外径而言,三者的比例为2.1‑2.3:1.2‑1.4:1 。
【技术特征摘要】
1.一种可拆卸膨胀螺栓,它包括水平布置的螺杆、水平布置且圆形的膨胀管、弹簧垫圈和螺母,螺杆的前部有与螺母相匹配的外螺纹、后部有圆台状的膨胀头,膨胀头的前侧底面的直径小于后侧底面的直径,膨胀头的后侧底面的直径大于膨胀管的内径,膨胀管的后部周向均布若干沿膨胀管轴向延伸且贯通至膨胀管后端的条形槽,螺杆套装在膨胀管内,螺杆的前部自膨胀管的前端伸出,膨胀头经膨胀管的后端卡入膨胀管的管腔内,螺母、弹簧垫圈由前至后地依次安装在螺杆的前部,其特征在于:所述膨胀管的外管壁前端套装与其共轴线且环形的撬动板,撬动板的前侧面与膨胀管的前端面平齐;所述撬动板在水平面内的投影形状为前大后小的等腰...
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