"Cross" operation method for 8-ton crane lifting

There are basically three operating methods for lifting operations: lifting, prying, bundling, hanging, jacking, hoisting, sliding, rolling, rotating, and rolling. They are collectively called the cross operation method. Master this method flexibly and use it to You will get twice the result with half the effort.
① Lifting When transporting small pieces of machinery and materials, due to the short transportation distance or the inconvenience of mechanical transportation, the lifting method can be used, and it can be carried out by two or more people. During operation, the levers and ropes used must be strong and suitable. Operators are required to move in unison, obey unified commands, and have reasonable load distribution.
②Pry When the lifting weight and lifting height are not large, you can use a crowbar to pry up the heavy object. Prying uses the principle of leverage to achieve the purpose of saving labor. Therefore, the fulcrum of the crowbar should be as close to the heavy object as possible, and the fulcrum should be harder. The crowbar can be used to raise the component so that wooden boards or bricks can be placed underneath it. You can also repeatedly pry the pad to raise the heavy object or use the opposite method to drop the heavy object.
③ Bundling refers to the operation of binding objects to be hoisted, moved or fixed with ropes and chains. Based on factors such as the lifting weight, the geometry of the object, the location of the center of gravity, whether the object is easy to deform, and the lifting process requirements, comprehensive consideration will be given to the bundling method and lifting points. The binding position should ensure the stability and balance of the hanging parts. The selected binding position should ensure that no plastic deformation is caused by the weight of the hanging piece. When lifting long components vertically, they should be tied above the center of gravity of the object. When objects need to be hoisted in a horizontal position, they should be tied symmetrically on both sides of the center of gravity. The binding should be strong and firm, and the force on each strand of binding rope should be even. When tying up angular objects, the edges should be padded with soft materials.
④Hanging refers to the operation of hooking the objects after they are bundled. Common hooking methods include single rope buckle hooks, double rope middle hooks, back buckle hooks, pressure rope hooks, etc. When hooking, pay attention to the center position of the hanging piece and that each rope is not stressed evenly. Under the action of inertial force and other external forces, the ropes of the hanging parts should not be displaced or squeezed against each other.
⑤ Lifting is the operation of lifting heavy objects with jacks. This method is simple, easy, safe and labor-saving. Especially for some large objects, it can give full play to its advantages when large cranes are difficult to operate or the cost is high.
⑥Ton Crane
Crane refers to the operation of using lifting masts and lifting machinery to lift heavy objects and place them at designated locations. This is the most commonly used method of vertical transportation. It is characterized by large lifting capacity, high lifting capacity, wide working surface, fast speed and high efficiency.
⑦ Sliding refers to the operation of placing heavy objects on the slide and using mechanical or human traction to slide the heavy objects. It is generally used for short-distance movement or equipment unloading and other occasions. In order to reduce friction, rails are usually used as slideways. A sliding plate is placed between the rails and the weight, and lubricating oil is applied to the rails.
⑧Rolling is a method of moving heavy objects using the rolling of rollers. It is usually used for short-distance horizontal transportation.
⑨ Rotating is an operation method that rotates heavy objects at a certain angle in a plane. You can use rollers and raceways under the heavy objects to rotate on the spot, or you can set up a special turntable to rotate the heavy objects.
⑩Rolling refers to wrapping a rope around a cylindrical object and pulling the rope.