Let's take a look at the three major components of large marine cranes

In the stable operation of large ship cranes, slippage problems may occur during rainy days. The operating environment of ship cranes in rainy weather is inherently poor. If slippage occurs, the risk factor will increase. Marine cranes are generally used outdoors, so they are prone to slipping due to rain in rainy days. To avoid operational difficulties or stability accidents caused by this, it is necessary to start with the crane's tires. Non-slip chains can be fixed to the tires that are prone to slipping. This is done to increase the friction between the tires and the ground, thereby reducing the probability of slipping. When the hook of the crane is lifted to a certain height, since it is already very high, it will touch the limit weight in the limit device, thus opening the formation switch of the crane. In this case, the overwinding indicator light of the crane will light up, serving as a signal and also cutting off the operations such as the lifting of the hook, the extension of the boom, and the lowering of the boom.

Now, let's take a look at the three major components of large marine cranes.

1. Ensure that the anti-disengagement equipment of the hook is in good condition, and the hook should be protected from bumps during use. Oil each smooth point frequently. When cracks or breaks are found, the pulley should be replaced in time. It is necessary to frequently inspect the hook body. When cracks are found, the wear of the hook opening exceeds 10% of the thickness, or the opening degree changes, timely rectification should be carried out. It is worth noting that the defects of the hook cannot be repaired by welding.

2.When using steel wire ropes, sharp corners should not be bent. The starting (braking) and acceleration (deceleration) speeds of the crane should be slow to prevent the steel wire rope from being subjected to excessive force and breaking. When a crane is working beside power lines, it is necessary to pay attention to maintaining an appropriate distance from the power lines to prevent the steel wire rope from hitting the power lines and getting burned. When the steel wire rope comes into contact with the sharp corners of buildings or equipment, wooden blocks should be placed underneath. The steel wire ropes should be neatly arranged on the drum and must not be disordered to avoid being damaged under pressure. Welding is not allowed at the edge of the steel wire rope to prevent high-temperature electric arcs and welding slag from scorching the steel wire rope. When the steel wire rope is too short, it cannot be reused by making it longer. To enhance the maintenance of steel wire ropes, it is necessary to frequently use cleaning agents such as kerosene to remove dust and dirt from the steel wire ropes, and be sure to dip the lubricating oil into the steel wire ropes. When working, the operator should check the steel wire rope once a day, paying attention to whether it is worn, has broken wires, is corroded, has changed in diameter, or undergoes other physical and chemical changes, and also pay attention to the fixation of the rope ends.

3.When the crane is in operation, the operator should carefully check whether the components of the brake are running normally, whether there is any jamming, whether the gap between the brake shoes is appropriate, whether the surface of the brake shoes is in good condition, and whether the adjusting nuts are tightened. The lubrication of the brake should be carried out twice a week, but be careful not to let the lubricating oil stick to the conflicting parts. If the wear of the brake shoes, brake wheels, small shafts, mandshafts and other parts exceeds the standard; The main spring and auxiliary springs show cracking or plastic deformation. Cracks appear at braking and other areas; When faults occur in the brake electromagnet, power and hydraulic stack rods, etc., they should be repaired in time and must not be operated while faulty to ensure stability.

The main functions of large ship cranes are to control friction, reduce wear, lower equipment temperature, prevent rusting of components, and form seals, etc. These functions are interdependent and influence each other. If friction cannot be controlled, the goal of reducing wear cannot be achieved. A large amount of frictional heat will be generated, causing the machine parts to overheat and thus damaging the lubrication of the friction surfaces and the lubricating materials. As the Marine crane operates on one side of the main beam, the load and other objects exert a overturning moment on the trolley. The anti-overturning moment generated by the vertical or horizontal anti-rail wheels keeps the trolley balanced and prevents it from overturning. However, this method alone cannot ensure stability in the event of wind disasters, external impacts, wheel breakage, maintenance and other situations. Therefore, during the installation and use of the equipment, skill support is required to ensure the good effect of the product.

Generally speaking, the power unit of a large ship crane is composed of six different components, and the functions of these six different components are also quite different. For instance, one of the components of its power unit, and an important one, is what we usually call the motor. This type of motor belongs to the magnetic type motor, and its capacitor is unidirectional. During the production and design process, a power-off mechanism is also set up. That is to say, once the power supply is cut off, the crane will stop working. At the same time, to prevent the motor from being damaged or even burned out due to excessive temperature and heat generated during operation, a switch is installed on the motor to control the temperature. Once the temperature of the motor reaches a certain value, the switch will automatically close and then the motor will stop working.