Safety Training
2024-12-12
(1) the foundation of the jack. The foundation of the jack should be stable, solid and reliable. When the jack is set on the bottom surface, it should be padded with wood or other appropriate materials to expand the force area.
(2) Placement of jack. When placing a jack on a soft ground, a wooden block should be placed under the jack to avoid tilting and tilting after being stressed. When the weight is raised, the weight should be placed under the support pad at any time, but the hand should not be strayed into the danger zone. During the placement of the jack, keep the line of action of the load center of gravity consistent with the jack axis. During the jacking process, strictly prevent the jack from deviating and tilting due to the deflection of the jack foundation or the horizontal displacement of the load. To prevent the jack from sliding in contact with the metal surface or smooth surface of the concrete, if necessary, pad with hardwood blocks.
(3) Jacking operation. The jacking height of the jack shall not exceed the effective jacking. When lifting large objects (such as girders), both ends shall be separated to rise and fall, one end shall rise and fall, and the other end shall be padded, padded and placed firmly. The jack is not allowed to be overloaded.
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