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Design of Body And Frame System of Heavy-duty Electric Automatic Guided Containers Transporting Vehicle
In order to improve transportation efficiency, reduce costs, streamline management, and improve port transportation environment, etc., one of the development trends of container terminals is to promote the development of container terminals in the direction of automation and intelligence. The heavy-load unmanned electric container transport vehicles (AGV) is a key link in the automation and intelligentization of container terminals. The design of frame and body of the heavy-load unmanned electric container transport vehicles is the key. Strength and stiffness are the crucial factors on designing its frame. The crucial factors on designing its body are providing installation position of some assembles like the battery system and fixing containers when carrying. Due to the heavy load of this AGV and its own large mass, and its function of bearing its own mass and various of load as well as providing position for installing other assembles, the design of frame will be mainly illustrated, including the design procedures of the main frame and the auxiliary frame. After obtaining the parameters of frame by numerical calculation, the three-dimensional model of frames are built with UG 10.0 and the finite element analysis is conducted on them, which will provide more direct and detailed judgement for the frame. [毕业设计网]
The research result indicate that: the design frame can meet the requirement of strength and stiffness, and providing installation position for other assembles. Besides, the vehicle body realize its function.
The feature of this paper: the AGV involved in this article is a super-heavy unmanned electric vehicle. The frame is said to bear heavy loads. In order to ensure that the frame meets the requirements, both numerical calculations and finite element analysis will be applied.
Key Words:AGV; main frame; auxiliary frame; vehicle body; stiffness; strength; finite element analysis



Abstract    1
Ⅰ Introduction    1
1.1 The development of automation in port transportation industry    1
1.2 The development status of port AGV    2
1.3 Basic design content of franme and body system    4
Ⅱ Design of main frame    6
2.1 Common frame structure types    6
2.1.1 Side-beam frame    6
2.1.2 Circumjacent frame    7
2.1.3 X-shape frame    8
2.1.4 Backbone-type frame    8
2.1.5 Integrated frame    9
2.1.6 Summary    9
2.2 Determination of the section shape of the longitudinal beam    9
2.3 Selection of the material of the longitudinal beam    10
2.4 Selection of the material of the longitudinal beam    10
2.5 Analysis of loads on longitudinal beam    12

2.5.1 Types of loads on longitudinal beam    12
2.5.2 Stress situation analysis    13
2.5.3 Calculation and check of stiffness    17
2.6 Beam arrangement and type selection    19
2.6.1 Arrangement of cross beams    20
2.6.2 Selection of the type of cross beams    24
2.7 Beam arrangement and type selection    24
2.7.1 Selection of connection methods for longitudinal beams and cross beams    24
2.7.2 Selection of welding method    25
Ⅲ Design of sub-frame    27
3.1 Determination of cross-section size and shape of sub-frame    27
3.2 Calculation and examination of the longitudinal beam of sub-frame    27
3.3 Determination of shape of the end of sub-frame    29
3.4 The arrangement of cross beams of sub-frame    30 [毕业设计网]
3.5 The connection methods of  longitudinal beams and cross beam    31
3.6 The connection methods of main frame and sub-frame    31
Ⅳ Design for the body system    34
4.1Limiting-container overhanging beam    34
4.2Limiting-container box    35
4.3 battery system and central control system overhanging beam    37
4.4 supporting-body beams    38
4.5 Mounting-motor brackets    39
4.6 Body and frame system assembly    39
Ⅴ Finite Element Analysis of Frames    41
5.1Application of Finite Element Analysis in Frame Design    41
5.2 Finite element analysis scheme    42
5.2.1 Simplification of the model    42
5.2.2 Constrains and loads that load on frames    42
5.3 Simulation results of only the main frame bearing stress    43 [毕业设计网]
5.4 Simulation results of the sub-frame assembled on the main frame    45
5.5 Analysis by comparing two finite element analysis results    48
Ⅵ Conclusions    50
Acknowledgements    51
References    52 [毕业设计论文网]

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