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毕业论文网 > 毕业论文 > 机械机电类 > 机械工程及自动化 > 正文

风力发电机叶片铺放装置设计毕业论文

 2021-04-05 06:04  

摘 要

随着复合材料的性能正在逐渐被人们开发利用,其成型技术也正在被广泛的研究。纤维缠绕和纤维铺放目前是比较先进的成型技术。国外对于纤维缠绕和纤维铺放技术的研究远早于中国,而且已经将其应用在了风力发电、航空航天、军事、化工等领域。.

国内对于纤维缠绕技术的研究目前来说相对比较成熟。纤维铺放技术的研究正处于发展阶段。由于纤维铺放技术源于纤维缠绕技术且纤维铺放技术能够避免纤维缠绕技术的许多不足,所以对于这项技术国内许多的科研单位正在广泛的关注和研究。

本文根据所给的风力发电机叶片的铺放要求,设计出一种铺放装置,用于实现风力发电机叶片纤维带的铺放。该铺放装置主要由龙门架和铺放头两大部分构成。龙门架带动铺放头实现X、Y、Z三个方向的移动。其X方向的移动由电机带动小车在导轨上实现,其Y、Z方向的移动均由电机带动滚珠丝杆机构实现。铺放头由送料机构、导向机构、传送机构、压紧机构、切割机构等组成,可以实现将纤维带铺放在风力发电机叶片的芯模上。在对机械切割、水切割、激光切割等各种切割方式进行比较后,选用超声波切割方式对纤维带进行切割。

设计过程中以UG为平台,对各零部件进行建模与装配,并对标准件选型,对整个铺放装置建立了完整的三维模型,还建立了一系列参数化标准件库和互换性零件库,缩短设计周期,提高设计效率。

关键词:风电叶片;纤维铺放;龙门;超声切割

Abstract

As the performance of the composite material is being developed by people gradually, its forming technology is also being widely researched. Filament winding and fiber laying is relatively advanced molding technology at present. For filament winding and fiber laying technology in abroad studied far earlier in China, it has its application in the fields of Wind power generation,aerospace, military, chemical industry.

Domestic for filament winding technology research at present is relatively mature. Fiber laying technology research is in the stage of development. For fiber laying technology is the result of filament winding technology and fiber laying technology, it can avoid many defect of filament winding. So many scientific research units are wide attention and research for the domestic.

In this paper, according to the laid requirements of wind turbine blades, a laying device is designed to realize the laying of wind turbine blade ribbon.The laying device is mainly composed of three parts: walking mechanism, paving mechanism and cutting mechanism. The gantry type walking mechanism is adopted in the walking mechanism, which can realize the movement of X, Y and Z in three directions. Its X-direction movement is realized by the motor-driven car on the guide rail, and its Y-and Z-direction movement is realized by the motor-driven ball screw mechanism. The laying mechanism is composed of feeding mechanism, guiding mechanism, compacting mechanism and so on, which can realize laying the fiber belt on the die of wind turbine blades. After comparing various cutting methods, such as mechanical cutting, water cutting, laser cutting and so on, the ultrasonic cutting method is selected to cut the fiber belt.

In the design process, UG is used as the platform to model and assemble all parts, and a complete three-dimensional model of the whole paving device is established for the selection of standard parts. A series of parametric standard parts library and interchangeable parts library are also established to shorten the design cycle and improve the design efficiency.

Key Words:Wind power blade; Fiber placement; Gantry; Ultrasound cutting

目录

摘 要 I

Abstract 2

第一章.绪论 1

1.1 课题背景 1

1.2 课题国内外相关现状 2

1.3 课题研究的目的和意义 4

1.4 课题来源及主要研究内容 4

第二章 铺放装置总体方案 5

2.1 纤维铺放成型技术概述 5

2.2 龙门式铺放装置概述 5

2.3 龙门铺放装置功能要求 6

2.4 龙门式铺放装置方案 6

2.4.1 龙门结构形式 6

2.4.2 铺放装置整体传动方案选择 8

2.4.3 铺放装置电机选择方案 8

2.4.4 龙门式铺放装置模型 10

第三章 铺放头设计 11

3.1 铺放头功能分析 11

3.2 铺放头总体方案设计 11

3.3 送料机构设计 12

3.4 导向机构设计 13

3.5 传送机构设计 14

3.6 压紧机构设计 15

3.6.1 压紧机构方案 15

3.6.2 压紧机构的装配图 17

3.7 切割机构设计 18

3.7.1 复合材料的切割方式 18

3.7.2 超声波切割刀的选择 21

3.7.3 切割机构的装配图 21

第四章 总结和展望 23

4.1 总结 23

4.2 展望 23

参考文献 25

致谢 28

第一章.绪论

1.1 课题背景

全球风资源量约为130000GW,超过全球可利用水能资源总量的10倍以上。我国是最早开发利用风能的国家之一,但早期的风能利用仅局限于风车提水、灌溉等代替人力进行生产作业,并未开展规模化的开发与利用。现在一些经济技术落后的国家或偏远地区,仍保留着原始的风能利用方式。

近代的化石能源危机爆发之前,风能开发利用并未得到世界各国的足够重视,风能利用技术,特别是规模化风电生产技术发展缓慢。随着化石能源危机的加剧,将可再生能源转换为电能的技术受到重视,并在许多国家或地区呈现井喷式的发展,能源利用向新能源利用模式的转型已成为趋势。丹麦大力发展风电,打造新能源城市,2017年风电供给已占其全国电力消费总量的43.4%。我国在风电利用方面成效显著,风电已成为国家第三大电源。

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