Self-locking type fixing component with adjustable length

The utility model provides a self-locking type fixing component with adjustable length. Comprising a fixing component shell, a fixing component hook, asymmetric teeth and a bidirectional pawl, a sliding groove is formed in the middle of the upper surface of the fixing component shell, a hook passing hole is formed in the side face of one end, and the asymmetric teeth are arranged in the fixing component shell along the two sides of the long edge; the fixing component hook penetrates through the through hole to be arranged below the asymmetric teeth, the end, away from the hook, of the fixing component hook is connected with an address locking device, and the locking device is meshed with the asymmetric teeth through a bidirectional pawl for self-locking. The length of the hook is adjustable, and the requirement that the distance between two fixing points in the same equipment or part is frequently changed is met. The rack adopts an asymmetric tooth-shaped design and has one-way constraint, so that the problem