Buying a crane also requires skill
In the crane industry, competition is fierce every year. In order to win customers, the major sellers use "low price", "high cost performance", "buy and get", "cantilever length" and other promotional methods. It is better for customers not to stare at the discount information blindly, but to look at the actual ones.
First of all, let's analyze, is the longer the crane boom the better?
The boom length of the crane: refers to the effective length value from the center of rotation of the movable or fixed boom of the jib crane or the center of the fixed column to the center of the hook (spreader). The length of the boom determines the working height and amplitude of the crane. However, It should be distinguished from the boom amplitude.
Therefore, the length is not necessarily good, there is no stability, sturdiness, and durable length, and the work cannot be completed reasonably and effectively during the hoisting process. For cranes of general tonnage, the length of the cantilever must conform to the scientific design, and the risk will be great if it does not conform to the scientific design.
Let’s analyze the “overload”
Accidents caused by overloading have been repeatedly banned. We do not want such accidents to occur on crane construction sites. Long-term overloaded machines have a great impact on the life of the machine itself. The impact of overload factors on the strength of the crane is important because the crane is often designed to pre-arch the main girder according to factors such as span and frequency of use during the production of the main girder to smooth the tensile stress on the lower end of the main girder during the lifting process. , And it is precisely because of the plastic deformation caused by overload that the capacity of the crane's main girder is greatly reduced, which causes the camber of the main girder to disappear and even sag, thereby reducing its strength. The domestic crane safety regulations have paid attention to the overload phenomenon, and all cranes have been required to install overload limiters. Therefore, cranes with similar prices may have been installed with overload limiters, which is also a bright spot.
Let’s analyze the "low price"
Low price is actually an attractive guise. The cheaper the machine of the same type, the more profit the manufacturer will obtain in terms of accessories and materials. This kind of crane won't last long and must be replaced.
