Method for determining tower crane roll-over critical state base on rigidity of tower body

A critical state, tower crane technology, applied in the direction of cranes, etc., can solve the problems affecting the construction progress, the loss of life and property of the country and the people, and the inability to effectively detect changes in the displacement of the top of the tower body, so as to avoid the overturning accident of the tower crane. Effect

Active Publication Date: 2012-03-07
SHANDONG FUYOU TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the large structure of the tower crane and the high-altitude operation, tower crane tipping accidents are prone to occur
These accidents not only affected the construction progress, but also brought huge loss of life and property to the country and the people
[0003] At present, most tower cranes prevent tower crane accidents by installing limit devices, but the safety limit device can only measure whether the working load of the tower crane exceeds the limit, but cannot effectively detect the change of the displacement of the top of the tower

Method used

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  • Method for determining tower crane roll-over critical state base on rigidity of tower body
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  • Method for determining tower crane roll-over critical state base on rigidity of tower body

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Embodiment

[0027] A method for judging the critical state of tower crane tipping, the judging method is as follows:

[0028] 1) Establish the tower crane body stiffness model under the intact state of the tower crane:

[0029] a. Establish the model coordinate system x'y'z', take O' as the origin of the coordinate system, where O' is the intersection point of the tower body rotation plane and the vertical line of the tower body center, and the tower body rotation plane is the rotation of the tower body slewing bearing plane, the vertical line at the center of the tower body is a straight line perpendicular to the ground and passing through the center point of the fixed section of the tower body on the ground, the positive direction of the coordinate axis x' is the direction away from the tower body when the boom is parallel to the ground, The positive direction of the coordinate axis z' is perpendicular to the ground upward, and the positive direction of the coordinate axis y' is perpend...

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Abstract

The invention provides a method for determining a tower crane roll-over critical state base on rigidity of a tower body, which belongs to the tower crane detection technical field. The method comprises the following steps: establishing a tower rigidity model of the tower crane, and determining that whether the tower crane is in a roll-over critical state or not according to the position relation of the coordinate figure (X,Y) at the top of the tower body and the tower rigidity model of the tower crane. If the coordinate figure (X,Y) at the top of the tower body is in the tower rigidity model of the tower crane, the tower crane is not in the roll-over critical state; conversely, the tower crane is in the roll-over critical state.

Description

technical field [0001] The invention relates to a method for judging a critical state of a tower crane tipping based on the stiffness of a tower body, and belongs to the technical field of tower crane detection. Background technique [0002] With the development of the construction industry, the degree of mechanization of construction has been increasing year by year. As a machine that can transport materials vertically and horizontally, tower cranes are especially characterized by their high lifting height, large lifting weight, and large working range. , has been widely used in the construction industry. Due to the large structure of the tower crane and the high-altitude operation, tower crane tipping accidents are prone to occur. These accidents not only affected the construction progress, but also brought huge loss of life and property to the country and the people. [0003] At present, most tower cranes prevent tower crane accidents by installing limit devices, but sa...

Claims

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Application Information

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