What Factors Affect The Working Speed Of Overhead Cranes?

What factors affect the working speed of overhead cranes?

What factors affect the working speed of overhead cranes? For different working environments, different working speeds are used. As the saying goes, specific problems require specific analysis. The working of bridge cranes indoors and outdoors is adjusted according to different scene sizes, different weather, different crane internal designs and other factors.

The crane does not only have one working speed when working. Because the working speed of the bridge crane includes the lifting speed, the running speed of the trolley and the running speed of the trolley. First of all, it is related to the lifting capacity. Cranes with medium and small lifting capacity should choose high speed to improve productivity. Cranes with large lifting capacity should choose low speed to reduce driving power and improve the stability and safety of operation. In addition to different scenarios, the working speed also depends on the working level and usage requirements. Cranes with high working level, frequent use and high productivity requirements should choose high speed; working mechanisms with low working level and used for adjustment operation can choose low speed. ; Cranes used only for equipment installation and maintenance should not only use low speed, but also use double speed (fast, slow), micro speed or speed regulation according to needs. Using variable frequency speed regulation, the working speed can be adjusted arbitrarily in a range of 1:10.

In addition, there are also cranes with some special functions, such as cranes used for workpiece quenching operations, that should have rapid descent devices; cranes with large lifting heights should not only increase the lifting speed appropriately, but also use heavy-duty ones. Use low speed, use high speed when no load is used, or take measures to obtain a higher descending speed to improve productivity.

Depending on the scene environment, the speed of work used is also different, and professional related workers must carry out different controls. If the operation distance is long and the lifting height is large, the high speed should be selected. When the crane travels a short distance, it is not advisable to use high speed to avoid braking before starting is completed. At the same time, the service space is different, and the crane's working speed control method is also different in design. With the development of modern industry, cranes that do a lot of transfer work are increasingly using high speeds, and cranes used for installation and maintenance are using speed regulation. Therefore, when operating the bridge crane, professional construction personnel must be close to it. Those who do not understand are not allowed to use it casually to avoid any problems. ​

Factors affecting the speed of overhead cranes:

1. Overhead Bridge crane lifting mechanism

The lifting mechanism consists of a lifting motor, reducer, drum, brake, hook, etc. The lifting motor is connected to the reducer through the coupling, the brake wheel, and the output shaft of the reducer is connected to the drum around which the wire rope is wound. The other end of the wire rope is equipped with a hook. When the drum rotates, the hook follows the wire rope. Raise and lower by winding or unwinding on the reel. For cranes with a lifting capacity of 15t and above, there are two sets of lifting mechanisms, namely the main hook and the auxiliary hook.

2. Operating speed of overhead crane

The speed at which the operating mechanism operates at the rated speed of the drag motor, in m/min. The running speed of small cars is generally 40~60m/min, and the running speed of large cars is generally 100~135m/min.

3. Lifting speed of bridge crane

The speed at which the lifting motor of the lifting mechanism picks up the object at the rated speed is measured in m/min. Generally, the lifting speed does not exceed 30m/min, which is determined according to the nature, weight and lifting requirements of the goods.