Relationship between crane load status, lifting ca

2022-06-25
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The relationship between crane load status, lifting capacity and working level

for many years, enterprises have taken hard dashboard material selection as an example. Safety management work has found that it is one thing for some safety technicians to confuse crane load status, lifting capacity and working level in the "three Simultaneities" review of lifting equipment, that is, the higher the working level, the higher the load status; The lower the working level, the lower the load state; Or the higher the rated load of the crane, the higher the working level; The lower the rated load of the crane, the lower the working level. The main reason for this error is that the working level, load state and load capacity of the crane are not clear. Mistakes are often made in the examination and approval of "three Simultaneities". First, the "big with the small" wasted money. Second, the "small with the big" buried hidden dangers of accidents. In order to attract the attention of the safety technicians, master the relationship between them, and facilitate our application in production practice, this paper is divided into the following three parts:

I. describe the relevant concepts

1. Rated load G: the clamping force of this Engel v-duo 3600 machine is 3600 tons, which refers to the maximum allowable lifting capacity (including the weight of separable slings) of the crane during normal operation, and the unit is expressed in tons (T)

2. Load state Q: it is a parameter reflecting the load change and load action times change program of the crane. It is usually expressed by the nominal load spectrum coefficient Kp. KP is expressed by the ratio of the actual lifting load pi to the maximum lifting load Pmax to help provide necessary oxygen, nutrition, fluid and drugs, and the number of lifting load actions Ni to the total number of working cycles n. The formula is:

according to the nominal load spectrum coefficient Kp, it is divided into four levels: Q1 light - Q4 heavy (see the table below)

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