Locking spring bolt

The invention discloses a locking spring bolt comprising a shell and a clamping device. The shell comprises a spring bolt body and a shell body wrapping the spring bolt body; the clamping device is rotationally installed on the shell body; a safety belt penetrates through the shell and the spring bolt body; in the non-working position, the safety belt linearly penetrates through the spring bolt body and the shell, the clamping device is rotated to the released position and does not make contact with the safety belt; in the working position, the safety belt winds across the clamping device and rotates the clamping device to the clamping position, and the clamping device makes contact with the safety belt and clamps the safety belt; and an arc-shaped bulge is formed on the shell, the clamping device is installed in the arc-shaped bulge, and when the clamping device is rotated, the tail end of the clamping device does not exceed the arc-shaped bulge. According to the locking spring bolt, the safety belt can be c