Anti-jamming Ratchet-type Tensioning Device

An anti-jamming ratchet-type tensioning device, having a base, a winding and unwinding mechanism equipped with a ratchet wheel, and an operating mechanism. The operating mechanism is provided with an operation part, which includes a separately arranged locking element and an elastic check claw. The elastic check claw is elastically deflectably mounted on the operating mechanism and, under normal conditions, resides within the rotation radius of the ratchet wheel to prevent reverse rotation; the locking element is linearly movably mounted on the operating mechanism for selectively restricting the rotation of the ratchet wheel.