Method for determining missed drawing of tower crane

A tower crane and tower body technology, applied in the field of tower crane detection, can solve problems such as tower crane tipping, and achieve the effect of avoiding tower crane tipping accidents

Active Publication Date: 2012-03-07
SHANDONG FUYOU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The partial pull can cause the tower crane to bear an additional overturning moment at the moment of lifting. When the sum of the additional overturning moment and the moment of the load is greater than the balance moment, it may cause the tower crane to overturn
However, there is no real-time and accurate method for judging the partial pull of the tower crane

Method used

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  • Method for determining missed drawing of tower crane
  • Method for determining missed drawing of tower crane
  • Method for determining missed drawing of tower crane

Examples

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Effect test

Embodiment

[0035] A method for judging the partial pull of the tower crane, the steps are as follows:

[0036] 1) Install the tower crane inclination measuring device on any main limb 4 of the slewing tower body of the tower crane, and use the tower crane inclination measuring device to measure the inclination angle of the center line of the tower body (θ x , Θ y ); Take O as the origin of the coordinate system, where O is the intersection of the tower body rotation plane and the tower body center perpendicular, the tower body rotation plane is the tower body rotation support rotation plane, and the tower body center perpendicular is perpendicular to A straight line on the ground and passing through the center point of the fixed section of the tower on the ground, the positive direction of the coordinate axis x is the direction of the boom when the boom is parallel to the ground, away from the tower body, the positive direction of the coordinate axis z is perpendicular to the ground upward, a...

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Abstract

The invention relates to a method for determining the missed drawing of a tower crane. The method comprises the following steps: 1, determining whether the missed drawing of the tower crane appears by utilizing the position relationship between the dip angle (theta x, theta y) of the center line of the tower of the loaded tower crane and the characteristic model of the dip angle of the center line of the tower of the well-being tower crane, wherein the dip angle (theta x, theta y) is obtained through measuring by a tower crane dip angle measure apparatus; 2, determining that the missed drawing of the tower crane appears when the dip angle (theta x, theta y) of the center line of the tower of the loaded tower crane is out of the characteristic model of the dip angle of the center line of the tower and is on the upper part of the characteristic model of the dip angle of the center line of the tower; 3, determining that the missed drawing of the tower crane appears when the dip angle (theta x, theta y) of the center line of the tower of the loaded tower crane is out of the characteristic model of the dip angle of the center line of the tower and is on the lower part of the characteristic model of the dip angle of the center line of the tower; and 4, determining that no missed drawing of the tower crane appears when the dip angle (theta x, theta y) of the center line of the tower of the loaded tower crane is in the characteristic model of the dip angle of the center line of the tower.

Description

Technical field [0001] The invention relates to a method for judging the deflection of a tower crane and belongs to the technical field of tower crane detection. Background technique [0002] With the prosperous development of construction projects in recent years, tower cranes have been used more and more due to their unique advantages, such as large working range, high lifting height and large lifting load. [0003] The tower crane is a high-altitude operation device. Whether it is in a working state or a non-working state, the safety of the tower crane can only be ensured by ensuring that the moment of the tower body is within its bearing range. But in fact, most of the tower cranes currently in use have a lot of illegal operations during the working process, and the typical one is the partial pulling of heavy loads. The deflection can cause the tower crane to bear additional overturning moment at the moment of lifting. When the sum of the additional overturning moment and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/88
Inventor 宋世军王通刘健康李楠楠乔彩风
Owner SHANDONG FUYOU TECH CO LTD
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