Compensatory self-locking steel rail elastic fastener

The invention discloses a compensatory self-locking steel rail elastic fastener comprising a spring and an embedded iron seat, wherein a self-locking block is arranged between the spring and the embedded iron seat, and the combined parts of the spring and the self-locking block are of lock catch structures matched with each other. By adding the low-cost self-locking block, the compensatory self-locking steel rail elastic fastener can better solve the problems of in-place installation, displacement control and height adjustment of the spring; and the compensatory self-locking steel rail elastic fastener can be used for conveniently reforming and updating the same type of fasteners without the functions of self locking and height adjustment so that the traditional fastener system has better comprehensive fastening performance, and the compensatory self-locking steel rail elastic fastener is greatly convenient for the maintenance of the fastener system in daily use and improves the safety of the fastener system.