The grab crane is an automatic picking machine. Its grabbing and unloading of materials is controlled by the driver and does not require auxiliary personnel. Thus avoiding the heavy labor of workers, saving auxiliary working time, and greatly improving the efficiency of loading and unloading. Grab cranes refer to cranes equipped with grabs, which are widely used in ports, docks, station yards, mines, garbage disposal stations, etc. to load various bulk cargoes, minerals, coal, sand and gravel, earth and stone, garbage, etc.
Overhead crane with grab bucket
Gantry crane with grab bucket
Grab cranes should pay attention to the following matters in normal use:
1. Before each shift, perform unloaded lifting, rotating, luffing, front and rear, left and right operation, and safety performance tests of brakes and limit devices. If the equipment is faulty, it should be eliminated before formal operation.
2. In the operation of the grab crane, straighten and lift the rigging that hangs the cargo, align it with the center line, and then lift it safely. Towing hook operation is strictly prohibited. When the hook has been hung with heavy objects but has not been lifted, the crane is prohibited from moving or rotating. It is forbidden to be fixed on the ship by welding and buried in mudflats or unknown liquids.
3. Attention should be paid to ensure wind protection, so that the safety device is good and effective. Do not use grab cranes in thunderstorms and snowstorms. Those engaged in grab work must master the relevant knowledge and precautions for crane operations. The work of the grab involves a wide range, in addition to the safety issues that should be paid attention to when using it, the maintenance of the grab is also indispensable.
Grab cranes can be effectively divided into gantry grab cranes, bridge grab cranes, etc.. Usually people often say that grab cranes refer to grab bridge cranes. According to the driving mode, it can be divided into two categories: hydraulic grab and mechanical grab. Grab crane equipment must meet the needs of use. The price is one aspect of the choice. The important thing is whether the requirements of the equipment meet the needs of use, whether the parts required by the equipment can operate well, etc. These are all crane selection needs to be considered Aspect.
