A ratchet binding ratchet tie down device includes a body cover, a body seat and a reel, the body cover and the body seat are pivotally connected by a reel, the reel is fixed with a ratchet, and the body cover is provided with a snap-fit ​​fit on the ratchet and can be driven A push plate with a ratchet wheel rotating forward, and a stop plate on the body seat that can prevent the ratchet wheel from reversing. The reel includes two half shafts with a half-moon shape in cross section. The relatively distant circumferential surface on the shaft is a curved contact surface, which is characterized in that it further includes a rope-pulling hook, the thickness of the rope-pulling hook is less than the width of the gap between the two half shafts, and the rope-pulling hook includes.

An arc-shaped and backward-curved hooking portion and a rope fixing portion at the rear end, the width of the hooking portion in the bending direction is larger than the gap width between the two half shafts, and the hooking portion of the rope hook passes through the two shafts When the gap between them is hooked on the abutment surface, the length of the part of the rope-hook that exposes the reel in the radial direction of the reel is less than the minimum distance between the bottom of the middle groove of the inner end of the push plate and the abutment surface. The length of the portion of the hook that exposes the reel in the radial direction of the reel is less than the minimum value of the distance between the bottom of the groove in the middle of the inner end of the stopper plate and the contact surface.

In this way, the application range of the existing ratchet binding device can be expanded through the setting of the rope-penetrating hook, so that the existing ratchet binding device can be bound with a rope. Specifically, one end of the rope is fixed on the rope fixing part of the rope-hook, and then the rope-hook passes through the gap between the two shaft halves twice, and the rope is wound on either shaft, and the rope-hook is hooked The part is hooked on the outer peripheral surface of the half shaft, so that the reel can be rotated by the ratchet structure to realize the winding of the rope along the reel and the tightening of the rope. After removing the rope-hook, the binding device can also use the binding strap to achieve binding.

Preferably, the number of the hooking parts is two, including the first hooking part and the second hooking part, and the first hooking part and the second hooking part are arranged at a 180-degree angle and are symmetrically arranged.In this way, the setting of the two hooking parts mainly ensures that the hooking is reliable, and try to avoid decoupling.Preferably, the sides close to each other of the first hooking portion and the second hooking portion are connected to a straight pipe extending backward, and the end of the straight pipe away from the first hooking portion is curled toward the first hooking portion. The rope fixing portion includes an annular rope-penetrating cavity, the distance between the end of the straight pipe away from the first hooking portion and the uncurled straight pipe is smaller than the diameter of the rope, and the rope fixing portion is directly opposite the first hooking Department.