Hoisting companies generally include professional lifting equipment, special equipment, various large machinery transportation, loading and unloading, handling, upstairs, long-distance transportation, etc. Business buildings, hotels, large shopping malls and individual small and medium-sized goods are transported by small pieces and fast transportation. Residents are moved to metropolises for distribution. Enterprises and institutions are relocated on a large scale. Goods are transported over long and short distances as required. To provide customers with a variety of labor services.
Huai'an Crane Rental Company Note: Before hoisting operation, the site conditions shall be investigated in detail, and special construction scheme shall be formulated according to the project characteristics and working environment, which shall be approved by the technical director of the enterprise. The contents include: site environment and measures, project overview and construction technology, selection of lifting machinery, design and calculation of lifting pick, ground anchor design, steel wire rope, etc. Design and selection of ropes and rope clamps, ground durability and road requirements, component stacking drawings and various protective measures during lifting, etc. The specification and quantity of wire rope shall be selected according to the diameter of wire rope; The splint shall be located at one side of the long end of the wire rope; When using wire rope, the braiding length shall not be less than 15 times of the wire rope diameter; It shall not be less than 300mm.
It is strictly prohibited to use tower cranes to lift, pull and hoist the heavy objects buried or condensed underground. Before hoisting, the concrete components or formwork on the construction site must be completely loosened. The crane must operate according to the specified lifting performance, and it is not allowed to overload or lift objects with unknown weight. The lifting operator and the commander must cooperate closely. The commander must be familiar with the mechanical performance of the command. The operator should strictly implement the commander's signal. If the signal is unclear or wrong, the operator can refuse to execute. If the accident is caused by wrong command, the commander shall be responsible for it. The steel wire rope used for the crane shall be based on the manufacturer's technical certificate. If there is no certificate, the wire rope shall pass the test before use. The steel wire ropes on the drum shall be firmly connected and arranged in order without distortion and deformation, and all steel wire ropes shall be free of joints.
When two or more cranes are used to lift an object together, detailed technical measures shall be formulated in advance and handed over. It must be carried out under the unified command of the construction director. The weight distribution shall be clear and shall not exceed 80% of the allowable weight of a single crane. When the crane is operating near the overhead high-voltage line, the minimum distance between its suspender, wire rope, lifting object, etc. and the overhead line shall not be less than the specified distance. If the distance cannot be maintained, the crane must be powered off or isolated before it can work. When working in rainy days, the distance should also be increased.
During the operation of the lifting company, it is very dangerous to stand under the suspender, under the lifting object, in front of the lifting object, in the triangle area of the steel wire rope of the steering pulley, around the fast line, and in the direction of the force on the diagonal hook or guide pulley. Therefore, the position of employees is very important. They should not only pay attention to themselves, but also remind each other, check and implement to prevent accidents. Many accidents happen in this way. The lifting work has been completed. When the hook runs empty and the hanger hangs on the hook or other objects in a free state, if the driver or commander does not respond in time, the accident will happen immediately. This kind of accident happens to the operator and the crane. This has very bad consequences.
