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Views: 0     Author: Site Editor     Publish Time: 2020-10-26      Origin: Site


(1) The foundation of the jack. The foundation of the jack should be stable, solid and reliable. When installing the jack on the bottom surface, it should be padded with road wood or other appropriate materials to expand the force-bearing area.

(2) The placement of the jack. When placing a jack on a soft ground, a wooden block should be placed under the jack to prevent it from tilting. When the heavy object is raised, the support skid should also be placed under the heavy object at any time, but the hand cannot enter the danger zone by mistake.

During the placement of the jack, keep the line of action of the load's center of gravity consistent with the jack axis. During the jacking process, it is necessary to strictly prevent the jack from tilting or tilting due to the jack foundation sinking or the horizontal displacement of the load. To prevent the jack from sliding with the metal surface of the heavy object or the smooth surface of the concrete, use hardwood blocks if necessary.


(3) Lifting operation. The jacking height of the jack should not exceed the effective jacking stroke. When lifting large objects, the two ends should be raised and lowered separately, one end should be raised and lowered, and the other end must be firmly padded, firmly cushioned, and stable. The jack is not allowed to be overloaded.

The starting jack should not be rushed, it should rise at a constant rhythm and be slow when falling. When multiple jacks are used at the same time, they must operate synchronously. After the jack has been operated, it must be carefully inspected, the oil pressure and hidden dangers must be checked, and maintenance must be carried out. Place it in an appropriate place.







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