Method for determining single-leg damage and damage position of tower body steel structure of tower crane
A steel structure and tower body technology, applied in the field of safety monitoring of large-scale tower-mast steel structures, can solve problems such as cracking of main limbs, loose connection bolts of the tower body, and harsh working environment, so as to reduce the overall maintenance procedure and facilitate automatic diagnosis , The method is simple and easy to implement
Active Publication Date: 2015-04-22
SHANDONG FUYOU TECH CO LTD
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Problems solved by technology
However, the tower crane has a huge structure, harsh working environment, and heavy workload, which can easily lead to safety hazards such as loosening of the connecting bolts on the tower body, cracking of the main limbs, and corrosion. If the hidden dangers are not eliminated in time, serious consequences will often result.
[0003] Regular safety inspection of tower cranes is a method to eliminate safety hazards, but the structure of tower cranes is huge, and a comprehensive inspection is a time-consuming and laborious task
At present, there is no theoretical method to detect structural damage and damage orientation based on the pose characteristics of tower cranes.
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[0016] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings, but is not limited thereto.
[0017] Set two coordinate systems, such as figure 1 , the origin O of the fixed coordinate system oxyz is the center point of the fixed section of the tower body on the ground, the positive direction of the coordinate axis x is the north direction of the ground (x(N)), the positive direction of the coordinate axis y is the west direction of the ground (y(W)), and the coordinate axis The positive direction of z is vertical to the ground (z(t)); the origin of the other moving coordinate system Ot is the intersection point of the slewing bearing slewing plane at the top of the tower and a straight line passing through point O and perpendicular to the ground, and the positive direction of the coordinate axis Xt is the starting point. The axis of the boom is away from the direction of the tower body (the direction of increas...
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The invention provides a method for determining single-leg damage and a damage position of a tower body steel structure of a tower crane by the pose characteristics of endpoint inclined angle of the tower body of the tower crane. According to the method, the inclined angle of the top end of the tower body in a moving coordinate system is measured in real time by using an inclined angle sensor; accordingly, a pose characteristic map of the inclined angle of the top end is drawn; when the characteristic of two continuous closed circles with inward convergence petals is present on the pose characteristic map of the inclined angle, the main leg of tower body of the tower crane can be determined as being damaged; and the damage is determined being appeared in the main leg corresponding to the position with the same rotation angle in a static coordinate system. The method can diagnose that the steel structure of the tower body of the tower crane is damaged simply and rapidly, give out the position of the damaged single leg, and can prevent accidents caused by the steel structure of the tower body in advance.
Description
technical field [0001] The invention relates to a method for judging the damage and damage orientation of a single limb of a steel structure of a tower body through the pose characteristics of the top end point of a tower crane body, and belongs to the field of safety monitoring of a large tower mast type steel structure. Background technique [0002] Due to its advantages such as high working efficiency and large working radius, tower cranes have become widely used lifting and transporting machinery in the fields of modern industry and civil engineering. However, the tower crane has a huge structure, harsh working environment, and heavy workload, which can easily lead to safety hazards such as loosening of the connecting bolts on the tower body, cracking of the main limbs, and corrosion. If the hidden dangers are not eliminated in time, serious consequences will often result. [0003] Regular safety inspection of tower cranes is a method to eliminate safety hazards, but the...
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IPC IPC(8): B66C23/88
Inventor宋世军郝龙龙宋连玉
OwnerSHANDONG FUYOU TECH CO LTD