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Bionic structure and design method of wind-resistant and load-reducing box girder of gantry crane

A gantry crane and box girder technology, applied in support structure, bottom support structure, design optimization/simulation, etc., can solve the problem of lack of systematic research to reveal the characteristics of wind-induced effects of cranes, unsystematic special case research, and blank design of wind resistance and load reduction and other problems, to achieve the effect of easy operation of design steps, simple design steps, and reduction of wind-induced load fluctuation amplitude.

Active Publication Date: 2022-05-31
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the occurrence of more and more wind damage accidents, the research on the wind characteristics of crane structures is becoming more and more urgent, but the current research is mostly a single, fragmented special case study, and there is no comprehensive and systematic research to reveal the wind-induced effect characteristics of cranes
At the same time, the wind resistance and load reduction design for the crane structure is still relatively blank

Method used

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  • Bionic structure and design method of wind-resistant and load-reducing box girder of gantry crane
  • Bionic structure and design method of wind-resistant and load-reducing box girder of gantry crane
  • Bionic structure and design method of wind-resistant and load-reducing box girder of gantry crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] In the art, the main girder of a gantry crane generally adopts a box girder structure with a rectangular or trapezoidal cross-section. Figure 2 gives a

[0092] The box puffer is commonly known as a box fish, and it has been pointed out earlier that its box-shaped structure does not affect its swimming speed. In this embodiment,

Embodiment 2

[0104] Taking the cuboid part as the fish body, the extracted outline of the box puffer is divided into three parts: fish mouth, fish body and fish tail. like

[0105] Extract the mouth part of the puffer fish in the box, and enlarge it to the height of the mouth of the fish and the height of the box girder. Then according to the three paragraphs

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[0112] The value range of the starting and ending points of the line segment:

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[0124]

[0125]

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[0137]

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[0143] In actual use, according to the three-dimensional biomimetic outline, the attachment member of the corresponding structure can be manufactured by utilizing lightweight materials,

Embodiment 3

[0160]

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Abstract

The invention discloses a wind-resistant load-reducing bionic structure of a gantry crane box girder and a design method thereof. The streamlined curved surface of the bionic structure of the gantry crane box girder for wind resistance and load reduction avoids the separation of the boundary layer on both sides of the web on the windward side of the box girder, thereby reducing the structural disturbance caused by the separation of the boundary layer and making the box girder structure in the flow field The fluctuation amplitude of the wind-induced load is reduced, thereby improving the stability of the crane mechanism; moreover, on the basis of basically not changing the bearing characteristics and operation mode of the crane box girder, changing the flow around the box girder by attaching can greatly improve the stability of the crane mechanism. Reduce the downwind wind load of the box girder, and the wind load reduction can reach 66.5%, thereby reducing the operating load of the gantry crane cart, saving energy and reducing emissions.

Description

Wind-resistant and load-reducing bionic structure of gantry crane box girder and its design method technical field The invention belongs to large-scale gantry crane design and application technical field, relate to gantry crane box girder wind resistance and load reduction Design technology. Background technique [0002] Wind load refers to the pressure generated by the air flow on the engineering structure. Due to the wind load accounting for the operating power of the crane trolley 60% to 70% of the machine load, of which the wind load of the main beam of the crane accounts for 60% to 80% of the wind load of the whole machine. Therefore, the wind load is The main load of crane operation and structural verification. Moreover, with the continuous expansion of industrial production scale, production efficiency and automatic With the continuous improvement of the chemical level, the crane structure continues to develop in the direction of high, large, thin and long. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C6/00B66C5/02G06F30/28G06F30/17
CPCY02A40/81
Inventor 程文明王玉璞杜润王书标李杭飞
Owner SOUTHWEST JIAOTONG UNIV
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