by Jinge on 2023-03-08
1. Steel plate lifting tongs can be divided into horizontal lifting lifting tongs and vertical lifting lifting tongs according to the hoisting usage method; according to product performance classification, they can be divided into flipping tongs, double-plate lifting tongs, single-plate lifting tongs, and I-beam Hanging clamps, steel pipe lifting clamps, round steel lifting clamps, pallet clamps, stacked steel clamps.
2. As a professional lifting tool, steel plate lifting tongs must be used by professional personnel in the correct way. The usage method is as follows:
1. Horizontal hanging: The safe working load of the horizontal tongs refers to the load of a pair of horizontal tongs. The thickness of the lifting steel plate refers to the thickness range of the lifting tongs to safely lift the steel plate. The actual opening of the tongs should be greater than the thickness of the steel plate. Before hoisting, you must first check whether the weight and thickness of the steel plate match the horizontal clamp. Overloading is strictly prohibited.
In actual use, there should be a gap between the steel plate and the ground, and the size of the gap should be slightly larger than the thickness of the bottom of the clamp. Manually move the tongue of the horizontal clamp to the maximum opening; clamp the horizontal clamp on the steel plate, and make sure that one side of the steel plate touches the inner surface of the horizontal clamp. It should be checked before lifting that the center of gravity of the steel plate should be located at the center of the polygon formed by the two sets of lifting tongs. After the steel plate is hoisted, the steel plate should be horizontal. When the angle between the steel plate and the horizontal plane is greater than 7°, the position of the horizontal clamp should be readjusted. Pay special attention to the situation where there is no beam. At this time, the angle between the steel plate and the horizontal plane shall not exceed 5°, otherwise it must be reinstalled.
2. Vertical hoisting: The vertical hoisting tongs can be used for single hoisting of steel plates, double hoisting of H-beams and I-beams, double hoisting cylinders, or supporting beams for hoisting of steel plates and two legs. Rigging links lifting steel plates, etc.
Vertical lifting tongs Pull the handle of the vertical lifting tongs to make the lock plate push the connecting arm, at this time the tong tongue is at the largest opening under the restriction of the connecting arm. Push the vertical lifting pliers to insert the steel plate into the jaws of the vertical lifting pliers to the bottom, then pull back the handle so that the tongues of the vertical lifting pliers clamp the steel plate. When the double limb rigging is connected with the vertical lifting clamp to lift the same steel plate, the angle with the universal lifting ring shall not exceed 60 degrees, and the top angle without the universal lifting ring shall not exceed 30 degrees, and the maximum lifting capacity of the two vertical lifting clamps shall not exceed 1.5 times the weight of a single limb.