Bolt locking and looseness-preventing device

Abstract

The invention discloses a bolt locking and looseness-preventing device. One end part of a bolt (1) passes through an assembly part (2), and a locking nut (4) is sleeved at the end part of the bolt (1); an inner hole of the locking nut (4) is divided into a screw hole section (5) and a taper hole section (6); the screw hole section (5) is in screw thread fit with the bolt (1); a locking seat (3) is arranged between the locking nut (4) and the assembly part (2) and is integrally formed by a taper sleeve (8) and a disc seat (7); the taper sleeve (8) extends into the taper hole section (6) of the locking nut (4) and is fitted with the taper hole section (6) of the locking nut (4) through taper surfaces; a plurality of openings evenly distributed in the circumferential direction are arranged in the outer wall of the taper sleeve (8); and first elastic blocks (9) are formed between adjacent openings. According to the bolt locking and looseness-preventing device, screw threads are deformed through taper surface fit between the locking nut and the locking seat, so functions of locking and looseness prevention are realized; and the bolt locking and looseness-preventing device has the characteristics of high regulation precision, convenience in assembly and disassembly, simplicity in operation, and the like, and an assembly clearance problem can be solved.

Description

technical field [0001] The invention relates to a bolt locking and anti-loosening device, which is used for locking and anti-loosening when nuts are installed in place. Background technique [0002] The existing bolt locking and anti-loosening device consists of bolts, slotted nuts and cotter pins, and notches are arranged on each regular hexagonal side of the slotted nut. When the slotted nut is set on the bolt and rotated in place, align the two symmetrical notches of the nut with the radial pin holes on the bolt, insert the cotter pin, and clamp the slotted nut through the cotter pin. stop to ensure the compactness of the assembly. However, since there are only 6 notches on the circumference of the slotted nut, that is, the angles between two adjacent locking positions of the slotted nut are 60 degrees apart, the minimum value of the adjacent locking positions of the slotted nut is 60 degrees of rotation of the slotted nut. Degrees, the distance that the slotted nut mov...

AI Technical Summary

Problems solved by technology

Affected by the processing technology, the assembly gap after assembly is difficult to control. When the slotted nut is rotated in place and the assembly gap is eliminated, it is likely that the notch on the slotted nut and the pin hole on the bolt cannot be aligned, and the opening The slot nut does not rotate further. If it is backed up one step until it is aligned and locked with the last slot, there will be a gap between the nut and the assembly, which will cause the assembly not to be firm enough, and eventually cause the assembly to be unqualified.

[0003] It can be seen that the deficiencies of the existing bolt locking device are: 1) the adjustment accuracy is low; 2) it is easy to leave assembly gaps, and the assembly parts are prone to loosening; 3) the application has great limitations

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