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Lifting capacity measurement method, equipment, system and construction machinery

A technology of construction machinery and measurement methods, which is applied in the direction of load hanging components, transportation and packaging, etc., can solve the problems of low accuracy, no consideration of the friction force between the pulley and the wire rope, and large deviation of the calculated value of the lifting capacity, so as to improve safety. sexual effect

Active Publication Date: 2016-06-08
HUNAN ZOOMLION INTELLIGENT TECH +1
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Problems solved by technology

[0003] However, the lifting capacity measurement of tower cranes in the prior art can only be used for static load calibration, that is, calculating the lifting capacity in a static state, and in a dynamic load state (for example, during the lifting and lowering of a heavy object, the amplitude process of a luffing trolley) ) Since the friction force generated by the pulley and the wire rope is not considered, the calculated value of the lifting capacity has a large deviation, low accuracy, and potential safety hazards

Method used

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  • Lifting capacity measurement method, equipment, system and construction machinery
  • Lifting capacity measurement method, equipment, system and construction machinery
  • Lifting capacity measurement method, equipment, system and construction machinery

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Embodiment approach

[0020] According to an embodiment of the present invention, the lifting capacity measuring device may include: a receiver 100, which can receive the force parameters of the fixed pulley 10 connected to the hoisting drum of the construction machinery and the state parameters of the construction machinery, for example, from the weight The sensor receives the measured resultant force of the steel wire rope tension at both ends of the fixed pulley connected to the lifting drum, or can also calculate the fixed pulley according to the two component forces of the steel wire rope tension at both ends of the fixed pulley and the angle between the two component forces. The resultant force of the wire rope tension at both ends of the pulley (such as figure 1 shown), and receive construction machinery state parameters from construction machinery state detection equipment. For example, the construction machinery state detection equipment may include a PLC controller and / or a safety monitor...

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Abstract

The invention discloses a lifting capacity measurement method, equipment, system and construction machinery. The method includes: receiving force parameters of a fixed pulley connected to a lifting reel of the construction machinery and state parameters of the construction machinery; according to the force parameters and the state parameters of the construction machinery to calculate the equivalent friction force at the fixed pulley; and calculate the lifting capacity of the construction machinery according to the force parameters, the equivalent friction force, and the state parameters of the construction machinery. The present invention can realize accurate calculation of the lifting weight under the crane's motor-loaded and static-loaded states, and improves the safety in the working process of the crane.

Description

technical field [0001] The present invention relates to construction machinery, in particular to a method, device, system and construction machinery for measuring lifting capacity. Background technique [0002] Tower cranes are widely used lifting and transportation machinery on construction sites, and they are responsible for high-altitude and long-distance transportation. Because of the height of the tower, the long boom and the large lifting load, the risk factor is very high when used. Once the lifting capacity (that is, the weight of the hoisted object) exceeds the rated load, safety accidents such as tipping, arm folding, and waist breaking may occur. Therefore, a safety monitoring system is installed on the tower crane, and the monitoring system measures the lifting capacity in real time through the weight sensor. The weight sensor installed on the tower crane is usually a single pulley pin type, which is installed on the fixed pulley connected with the lifting drum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/16
Inventor 姚立娟郑庆华谢利军凌昭君
Owner HUNAN ZOOMLION INTELLIGENT TECH
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