A Selection Method of Lifting Wire Rope

Abstract

The invention provides a method for selecting a hoisting steel wire rope, which includes the following steps: establishing a steel wire rope characteristic table according to the rope diameter, rope core type, minimum breaking force and unit mass parameters of various steel wire ropes included in the selected steel wire rope model; The length of the steel wire rope, the self-weight of each steel wire rope at this length can be obtained through the unit mass of the steel wire rope in the above steel wire rope characteristic table; according to the formula P=F min / η-G gss ×η Calculate the allowable hoisting load P of each steel wire rope, where, F min is the minimum breaking force of the wire rope; η is the safety factor, which is selected according to the requirements of the industry standard; G gss is the self-weight of the wire rope; obtain the lifting point load P of the wire rope 0 , P 0 It is the reaction force value of the lifting point or the load value of the single point hanging object; when P>P is satisfied 0 Select the suitable hoisting wire rope from the steel wire rope of the condition. The selection method of the hoisting steel wire rope first removes the self-weight load of the steel wire rope and then selects the steel wire rope, which can improve the accuracy of the selection of the steel wire rope, avoid repeated checking and calculation, and simplify the selection process of the steel wire rope.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a method for selecting hoisting wire ropes. Background technique [0002] Since the construction work surfaces of high-rise buildings, tunnel shafts, hydropower stations and other projects are far away from the ground, construction materials and construction platforms need to be hoisted at high altitudes and long distances. Due to the increase of the length of the steel wire rope during hoisting, the load effect of its own weight on the steel wire rope increases accordingly, and the self-weight load of the steel wire rope cannot be ignored when selecting the steel wire rope. In the prior art, the selection process of the steel wire rope is often based on the lifting point load P of the steel wire rope 0 Pre-select the applicable steel wire rope, and then calculate the self-weight G of the steel wire rope according to the unit mass and length of the selected steel wire rop...

AI Technical Summary

Problems solved by technology

In the prior art, the selection process of the steel wire rope is often based on the lifting point load P of the steel wire rope 0 Pre-select the applicable steel wire rope, and then calculate the self-weight G of the steel wire rope according to the unit mass and length of the selected steel wire rope gss , and finally P 0 with G gss Sum up to get the hoisting weight resultant force P of the steel wire rope 合 , it is easy to appear P during this calculation 合 >P, where P is the allowable hoisting load of the steel wire rope. At this time, it is necessary to repeat the calculation, and the efficiency is low; 合

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