| 摘要 |
<p>The present invention discloses a quick tightener in the field of mechanics, 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 handle could be hinged to the support via the half-moon shaft. The ratchet wheel could be connected with the half-moon shaft and the handle could drive the ratchet wheel to rotate. The half-moon shaft is composed of a first half-moon shaft and a second half moon shaft, in which both the first half-moon shaft and the second half-moon shaft could be connected with the ratchet wheel of the tightener and a spacing could be provided therebetween to connect the binding belt. 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.</p> |
