摘 要

在工业生产线上，为了让生产的产品按照一定的生产工艺流程在不同工位间有序、定位可控的移动，大量应用了有轨移动平台。有轨移动平台包括机械本体、行走机构和自动转向系统。本项目提出一种新型的双轨小车自主转向系统。本文通过分析目前常用的有轨物流小车转向结构。对单轨和双轨小车转弯的两种结构进行了比较。提出了一种适用于大曲率半径下的双轨小车转向的轮轨结构。所得结果对于增加物流车可靠性，改善生产企业物流状况，降低生产成本等具有重要的指导意义。

论文主要研究了一种新型的双轨小车转向的轮轨结构。该转向结构可以使承载荷小车平稳的通过双轨弯道。具有成本低廉，可靠性更高，运载量大等优点。本文设计了一种双滑块旋转变总结构，来解决双轨小车通过大曲率半径弯道时的易卡死问题。并提出了适合于该结构的轮轨结构模型。利用SolidWorks软件，对该结构进行建模分析，得到了此种轮轨结构的三维模型。并利用该软件进行了零件的详细设计。最终利用Auto CAD软件，完成了该轮轨结构的二维工程图设计。为保证所设计的转向机构的安全运行，利用ANSYS workench软件，对该结构进行了静力学仿真计算。实验数据表明，在额定的承载荷下，该轮轨机构可以满足使用要求。

研究结果表明，双轨小车可以轻松地通过较大曲率半径的弯道。工作稳定可靠，具有良好的实际应用效果。本文特色在与设计出了大曲率半径转弯的机械结构和静力学仿真。对现实生产具有重要的意义。

关键词：双轨小车转向；大曲率半径；选转变总结构；solidworks模型

Abstract

This paper first simulates the combustion space of a 650t/day air-fuel combustion float glass furnace.Then transform it into a oxy-fuel one with the model and compare them. The results have important guiding significance in transforming float glass furnace from air-fuel to oxy-fuel combustion.

Key Words ；numerical simulation , air-fuel combustion

table of Contents

Chapter 1 Introduction 1

1.1 Background 1

1.2 Research Status 2

1.3 thesis research 3

Chapter 2-track car turning design 5

2.1 Design of the overall structure of the trolley track 5

2.2 Rotational total structural design 6

2.3 Traction car design 7

2.3.1 gear train assembly 7

2.3.1 inside and outside the track beams 8

2.4 bearer Dutch car design 9

2.5 Summary 10

Chapter 3 static simulation 11

3.1 Simulation Software 11

3.2 Structural Analysis bearing trolley 11

3.3 Structural Analysis under the slider 12

3.4 Structure of the shaft 13

3.5 Summary 15

Chapter 4 Summary and Outlook 16

references 17

Acknowledgements

Chapter 1 Introduction

In today's FMS material system, rail car (rail Guid-ed vehicle), homing car (automatic guided vehicle) and the robot (robot or manipulator) has become the main means for workpiece transmission. Guided Vehicle-RGV Rail (rail guided vehicle) in the modern logistics equipment occupies the main position. Rail car is automated warehouse is an important part of, porters, and heap exercise machine with the delivery of the goods is necessary for logistics and transport of intermediate links. With the FMS and automated warehouse gradually being adopted by the enterprise and the use of RGV in the design of the internal device has gradually been valued by people. However, when the car in turn, the car is easy to die, run the problem of instability and other issues, to bring security risks. Therefore, it is very important to optimize the steering structure of the rail car.

1.1 Background

In today's flexible manufacturing system (Flexibl Manufacture System, referred to as FMS), the track AGV, AGV (AGV) are the main means of transmission of the workpiece. RGV to speed, high precision, linear arrangement of the large-scale use of FMS. AGV with its flexible, flexible path, suitable for large-scale and non-linear arrangement of the occasion. RGV and AGV have their own advantages, in addition to some similarities, but also complementary. From a technical point of view practicality, RGV is more suitable for China's national conditions [1-4]. Rail guided vehicles, also known as the shuttle, is a modern automated logistics system most commonly used automated handling equipment. It is in the electronic control system controlled by an encoder, laser ranging sensors to pinpoint the address of identification in various input and output station, after receiving a reciprocating shuttle transport materials [5-6]. Rail guided vehicle compared to automated guided trolley car has a transmission speed, transportation, and other dynamic features, make the material more rapidly in the transport and conveyor line layout between different stations, compact, simple, thereby improving the delivery of materials efficiency [7], which is mainly used in high-speed and other materials unit, efficient transport plane automated logistics system. Therefore, the study rail car, to improve productivity is important.

Catalog Figure 1 RGV “ kind of car “

One of the technical difficulties of the two track car is the problem of turning the car. Two track car in turn need to overcome the problem is [8]: how to ensure a smooth through the corners. Due to the difference of the inner and outer orbit turning radius, the inner and outer rail wheels

Speed is different, the position relationship between the front and rear wheels of the internal and external track will continue to change. Is usually used in the prior art dual train bogie for inter city track turning radius and turning inside and outside the track before and after round beam position changes little, under the combined action of train wheel / rail clearance, deformation and slippage can realize a turning. But for the factory conveyor operation by the space constraints, the two track turning radius is small, the change of the position relationship between the inside and outside of the orbit around the turn of the change in the larger case, the need to use a variable structure design. Also some two track car with four hooks for independent operation, by the sensor to control the position of each other, complex structure and running unstable, is not conducive to double track suspension self-propelled conveyor work. Therefore, it is very necessary to study the turning problem of double track car.

1.2 research status

Since 1967, the British Molins company developed the "system 24", in the mechanical manufacturing industry for the first time established the concept of flexible processing [9]. RGV is an important material transportation tool in flexible machining. RGV motion performance relates to the car itself structure, guide smooth condition, vibration of wheel / rail interaction and shelf factors [10] is a contains inertia, elasticity and damping of the kinematic characteristics of complex nonlinear system and its characteristics are many moving parts, stress complex. Because of the mutual coupling between the components of the mechanical system (such as the steering, frame and telescopic mechanism), the dynamic characteristics of the shuttle vehicle is very complicated. Shuttle car operating conditions is also a wide range, in the actual work process, from the external incentive and internal control factors. Under the different conditions of the spatial position of the parts of the vehicle and the force situation has change [11].

There is still a big gap between our country and the world advanced level, and it needs to be further improved. Many studies in this area. Humic Yang Jianguo et al of RGV in straight track side side to do the cause analysis and structure improvement [12], to bend operation no involved; Cheng Peng et al on the vehicle in the running process of the corners of the control parameters were optimized. In order to enhance the vehicle traveling on a curve in the process of handling [13], and the influence of the structure of vehicle track without inquiry. Li Yonggang of vehicle in section for driving on the wedge corners of sideslip and overturning of the theoretical analysis [14], but did not involve the safe operation of the evaluation method of Hangzhou Wulin Machinery Factory rakwar J is proposed for improving rail car turning condition of the two methods of [15]. The method can effectively prevent the turning radius of the curvature of the car, the car will appear the phenomenon of death. The two method is proposed in this paper is to design a load bearing beam which can be designed to rotate around the vertical axis of the lead. 2) increase the gap between the wheel flange and rail. But the method is only applicable to the single wheel car. The bearing capacity of the single wheel car and the stability of the operation are not good. This topic will put forward a new type of double track car turn structure design.