Abstract: A cargo support device comprises an inner tube and an outer tube enclosing the inner tube. The inner tube can partially stretch out from the outer tube. A handle is hinged on the outer tube. There is a strip-shaped groove designed on the inner tube in the axial direction. A long toothed rack is embedded into the groove. There is a ratchet at the end of the handle, which meshes with the teeth on long toothed rack. The cargo support device can also comprise a locator which can lock the handle when the ratchet meshes with the teeth. The teeth on the cargo support device are not directly punched on the inner tube, but set on a separate long toothed rack embedded in the groove of the inner groove. This will properly increase the depth of the teeth.

Abstract: The present invention discloses a quick tightener, which addresses the problems existing in the conventional tighteners such as inconvenient operation or failure in use under extreme conditions. The quick tightener includes a support, a handle, a ratchet wheel and a half-moon shaft. The half-moon shaft is composed of a first half-moon shaft and a second half moon shaft. Said first half-moon shaft could be fixedly connected with the ratchet wheel. Said second half-moon shaft could be fixedly connected with the ratchet wheel in the circumferential direction and axially move relative to the ratchet wheel. A clutch device is located between said first half-moon shaft and second half-moon shaft to connect the second half-moon shaft to the first half-moon shaft or disengage the second half-moon shaft from the first half-moon shaft. Such a quick tightener is equipped with the advantages such as preferential reliability and a high practical value.