Fastener capable of being quickly mounted and dismounted

Abstract

The invention discloses a fastener capable of being quickly mounted and dismounted. The fastener comprises a bolt, a nut retreating prevention unit, a nut and a ratchet ring, wherein the bolt is madeof carbon steel and contains a small amount of silicon, manganese, sulfur and phosphorus; the left side of the bolt is a head; the right side of the bolt is a screw rod; a first component and a secondcomponent are installed on the side surface of the screw rod at the right part of the bolt; the first component is positioned on the right side of the second component; threads of the screw rod partof the bolt account for only two fifths and are positioned at the right end; the diameter of the thread part of the bolt is larger than the diameter of other parts of the screw rod; the nut retreatingprevention unit is installed on the screw rod part on the right side of the bolt; and the nut is in threaded connection with the right end of the screw rod part of the bolt. After the fastener capable of being quickly mounted and dismounted is fastened, the nut is not prone to retreating, and the fastening effect can still be well guaranteed after the fastener is used for a long time.

Description

technical field [0001] The invention relates to the technical field of fasteners, in particular to a fast disassembly fastener. Background technique [0002] Tight fit bolts are often used for the fixed installation of large mechanical equipment or the connection of transmission devices. The usual fastening methods are: traditional hinged bolts and hydraulic bolts. For the narrow installation and operation space, these two methods cannot be effectively fastened. The main problems are as follows: traditional twisted bolts are precisely processed according to the twisted size of the corresponding connecting hole, and the matching method is generally a transition fit, resulting in high requirements for reaming hole dimensional accuracy, high requirements for stud processing, complicated installation process, and time-consuming installation. strenuous. The composition of hydraulic bolts generally includes: studs, sleeves, nuts and auxiliary installation equipment, which expand ...

AI Technical Summary

Problems solved by technology

[0002] Tight-fit bolts are often used for the fixed installation of large-scale mechanical equipment or the connection of transmission devices. The usual fastening methods are: traditional hinged bolts and hydraulic bolts. For the narrow installation and operation space, these two methods cannot be effectively fastened and connected.

The main problems are as follows: traditional twisted bolts are precisely processed according to the twisted size of the corresponding connecting hole, and the matching method is generally a transition fit, resulting in high requirements for reaming hole dimensional accuracy, high requirements for stud processing, complicated installation process, and time-consuming installation. strenuous

[0004] However, the existing quick disassembly and assembly fasteners, after being fastened, the nuts are easy to retreat with the prolongation of the use time, which affects the use of the fasteners

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