A tensioning apparatus for a lashing strap (8) includes a frame (1) having side walls (5, 5'). One end of the lashing strap (8) is fixed to the frame. A spindle (11) is rotatably secured to the frame (1), bridging the space between the side walls (5, 5') and bearing a tensioning lever (17) for winding the lashing strap (8) up from its free end. Ratchet devices that are employed at either end of the spindle (11) permit the operator to select whether a push or a pull on the tensioning lever (17) is to turn the spindle (11). Each ratchet device includes a ratchet wheel (14; 14') fixed to the spindle (11), a ratchet securing mechanism (70) disposed at the frame (1), and a tensioning ratchet mechanism (80) disposed at the tensioning lever (17).
A belt reel for fastening goods on a truck includes an axle extending through a main frame and a lever to pivotally mount the main frame and the lever to each other. The axle includes two opposite ends each having a ratchet wheel mounted thereto between the main frame and the lever and rotated with the axle. A slot is diametrically defined in the axle for allowing a belt extending through the axle. The main frame has a stop plate slidably mounted therein and selectively engaged to the ratchet, and the lever has a pawl slidably mounted therein. The pawl is engaged to the ratchet for driving the axle to reel the belt and separated from the ratchet for releasing the strain of the strained belt.
A strap fastener includes a base, a shaft mounted on the base, a reel rotationally mounted on the shaft, two ratchet wheels formed on the reel, a torque spring arranged between the reel and the shaft, a lever pivotally mounted on the base, a first detent movably mounted on the lever for engagement with the ratchet wheels, a second detent movably mounted on the base for engagement with the ratchet wheels, a wedge formed on the second spring-biased detent, a handle including a first end in which a hole is defined, a second end secured to the lever and a control element extending through the handle and the lever and including a first end exposed through the hole defined in the first end of the handle and a second end in engagement with the wedge. The first end of the control element can be pressed so as to move the second end of the control element from a position for engaging the second detent with the ratchet wheels to a second position for disengaging the second detent from the ratchet wheels.
A binding machine includes a tightening mechanism adapted to tension a belt and a limiting mechanism adapted to limit tensioning of the belt. The tightening mechanism includes, for example, a ratchet and a pawl coupled to a body of the tightening mechanism. A handle is adapted to rotate the ratchet in a first direction in response to a first force applied to the handle. The pawl is adapted to prevent the ratchet from returning in a second direction when the first force is released. A spring mechanism allows the handle to indicate when a second force opposing the first force achieves an established magnitude.
A rope tensioning device includes a support base, a handle, a connecting post, two fixing plates, two ratchet wheels, two locking blocks, two shafts, a snap ring, two elastic members, two insertion pins, a bolt, a nut, and a fixing pin. Thus, the rope tensioning device can be assembled rapidly and conveniently, thereby greatly reducing costs of assembly. In addition, the rope tensioning device can wind and unwind the rope easily, conveniently and rapidly.
A ratchet buckle device includes a base having two side plates rotatably attached to a reel drum, one or more toothed discs attached to the reel drum and latched to the base with a stop, an operating arm having two legs rotatably attached to the reel drum, a catch device latching the operating arm to the toothed disc, and a latch pivotally attached to the side plates for engaging with the toothed disc, and for allowing the latch to be tilted relative to the side plates, and the ratchet buckle device includes an improved structure for allowing the ratchet buckle device to be easily operated and for allowing the belt or strap to be temporarily released and to be easily unlocked or unfastened.