A detachable single side bolt and its use method

Abstract

The invention provides a detachable one-side bolt and a using method thereof. The detachable one-side bolt comprises a hollow sleeve, a screw rod and a tail baffle plate, wherein the screw rod is coaxially sleeved by the sleeve; the tail baffle plate is mounted at the bottom of the screw rod; the outer diameters of the sleeve and the tail baffle plate are equal; rotating blades are uniformly arranged at the low end, extending out of the sleeve, of the screw rod along the circumferential direction, and mounted on the screw rod through hinges; an inner-ring screw thread is arranged on the tail baffle plate; a plurality of cylindrical blocking bodies are distributed on the upper end surface; a thread screw is arranged at the bottom end of the screw rod; the bottom end of the screw rod is screwed into the tail baffle plate; meanwhile, the corresponding cylindrical blocking bodies are propped against both sides of all the rotating blades; grooves used for the entry of the cylindrical blocking bodies are correspondingly formed in the bottom surface of the sleeve; and when the screw rod is completely screwed into the tail baffle plate, the edges of all the rotating blades extend out of the periphery of the tail baffle plate. According to the detachable one-side bolt and the using method, the rotating blades are driven by rotating the screw rod and are limited by utilizing the cylindrical blocking bodies; during the mounting process, the entire outer diameter of the detachable one-side bolt is increased by opening the rotating blades; through the cooperation with a nut, the detachable one-side bolt is clamped and fixed in a hole of a mounting structure; and through the friction force between the rotating blades and the mounting structure, the detachable one-side bolt is fastened.

Description

technical field [0001] The invention relates to a bolt, in particular to a single-sided bolt and its use method. Background technique [0002] As a connecting member, bolts are usually composed of screws, nuts and washers. They have the advantages of convenient installation, low cost, and high strength, and are widely used in construction sites. For general bolts, during operation, it is necessary to pre-make a hole slightly larger than the diameter of the screw on the structure, then pass the screw through the hole from one side, install a washer and a nut on the other side, and finally tighten it. The method is applicable to the case where both sides of the structure can be accessed. For some closed structures, such as round pipes, square pipes, etc., the inner side of the structure cannot be operated, and ordinary bolts are not applicable. At present, there are also different forms and specifications of single-sided bolts on the market, such as expansion bolts, core-thro...

AI Technical Summary

Problems solved by technology

For core-through bolts, there are still certain requirements for installation accuracy, and it is difficult to install on-site

Moreover, most of the unilateral bolts are deformed in one direction and cannot be disassembled, which puts high demands on the construction personnel. If the installation is wrong, it will have a great impact on the entire construction

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