Flexible guide rail fool-proof self-locking device

The invention relates to the technical field of flexible guide rails, in particular to a flexible guide rail fool-proof self-locking device which comprises a fixed main body, a movable main body, a fool-proof mechanism and a locking arm, the fixed main body and the movable main body are slidably mounted in an embedded mode, and a flexible guide rail is arranged between the fixed main body and the movable main body; the fool-proof mechanism comprises a sliding seat, a reset spring and a locking pin, the fixed main body is provided with a sliding groove, the sliding seat slides along the sliding groove, the two ends of the reset spring are arranged between the sliding groove and the sliding seat respectively, the sliding seat is provided with a limiting groove, the locking pin is arranged in the limiting groove, and the two ends of the locking pin penetrate through the fixed main body and the movable main body respectively; the locking arm is rotationally installed on the fixing body, one end of the locking arm