The cantilever crane is a new generation of light lifting equipment made to adapt to modern production. It is equipped with a highly reliable electric chain hoist/wire rope hoist and is especially suitable for short-distance, frequently used, intensive lifting operations. It is efficient, energy-saving, trouble-free, and occupies a large area. Furthermore, it has a small floor area and is easy to operate and maintain.
The maintenance cycle of a cantilever crane can be long or short. However, some units or individuals do not fully believe in the factory data of the cantilever crane and rush to repair the new cantilever crane before it is returned, completely ignoring the conditions of the equipment for specific purposes. To be precise, the working conditions and stroke length used by each part of the pillar-mounted cantilever crane can be used as a basis for judging its maintenance cycle.
Many people wait until some mechanisms of the cantilever crane collapse before repairing them. In this way, it is easy to carry out maintenance operations on the collapsed mechanism occasionally, which undoubtedly increases the maintenance cost of the pillar cantilever crane. Therefore, users of cantilever cranes must pay attention to timely improvement, adjustment, and repair of every minor problem of the equipment, thereby extending the “collapse” period and “repair” period of the equipment mechanism.
Pillar cantilever cranes with large working strokes usually use higher speeds, while pillar jib cranes with small working strokes usually use lower speeds. The principle is to allow the mechanism to have a working section that runs at a stable speed to prevent unstable operation that turns to deceleration immediately before acceleration.
For suspension cranes that work frequently or need to meet high productivity requirements, the working speed of their mechanisms is often high. For pillar cantilever cranes used on production lines or engaged in rhythmic continuous production, the working speed of their mechanisms should be consistent with the production rhythm. Low speed is usually used for non-operating mechanisms or mechanisms that rarely operate and only do adjustment work.
Most cantilever cranes use hydraulic, lubricating, fuel and other oils. Using a pillar cantilever crane inevitably consumes a lot of fuel. However, if the fuel consumption of the cantilever crane is taken into consideration and the factors that increase the fuel consumption of the cantilever crane are reduced as much as possible, I believe that the purpose of saving maintenance costs can be achieved in terms of oil use.
The general-purpose suspension crane adopts medium speed, low speed or micro speed for assembly and maintenance installation, and the high speed is used for the transfer and loading and unloading of bulk materials. In addition, the low speed can be used for full load and heavy load, and the high speed can be used for no load and light load.
Generally, high speed is used for medium and small lifting loads, and low speed is used for large lifting loads. Especially when there are two main and auxiliary hoisting mechanisms, the speed of the main hoisting mechanism is usually significantly lower than the speed of the auxiliary hoisting mechanism.
Pillar cantilever jib cranes work lightly. The crane consists of a column, a slewing arm, slewing drive device and an electric hoist. The lower end of the column is fixed to the concrete foundation through anchor bolts. The cycloid reducer drives the cantilever to rotate. The electric hoist runs left and right on the cantilevered I-beam to lift heavy objects. The crane boom is a hollow steel structure, which is light in weight, large in span, large in lifting capacity, economical and durable. The built-in traveling mechanism adopts a special engineering plastic traveling wheel with rolling bearings, which has low friction and is easy to walk; the small structural size is especially helpful for increasing the hook stroke.
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