| 摘要 |
The hydraulic jack stand is a hydraulic jack with an integral jack stand. The jack stand helps stabilize and support a heavy object being lifted by the jack. The hydraulic jack stand uses multiple parallel safety mechanisms to prevent the jack from lowering unexpectedly while being used as a jack stand. The jack uses hydraulic pressure to raise and lower a lifting post. Pivoting teeth arranged along the lifting post allow the lifting post to be raised while preventing the post from falling due to any failure in the hydraulic cylinder. The jack stand has several legs, which extend out to provide a wide base. The legs have feet with non-slip pads underneath to protect the legs from wear and to help prevent the stand from slipping.
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