辽宁工程技术大学毕业论文
中文题目：青少年犯罪的原因及预防
外文题目：The cause of the crime and prevent teenagers
毕业设计（论文）共 15 页（其中：外文文献及译文 1 页）图纸共0张
完成日期 20xx年11 月 答辩日期
辽宁工程技术大学
本科毕业设计（论文）学生诚信承诺保证书
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辽宁工程技术大学毕业论文
辽宁工程技术大学
本科毕业设计（论文）指导教师诚信承诺保证书
本人郑重承诺：我已按学校相关规定对 杨立明 同学的毕业设计（论文）的选题与内容进行了指导和审核，确认由该生独立完成。如果存在弄虚作假、抄袭的情况，本人承担指导教师相关责任。
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辽宁工程技术大学毕业论文
摘要
在我国，未成年人犯罪通常是指已满14周岁不满18周岁的未成年人实施的刑法和有关刑事法律所规定的犯罪行为。青少年犯罪已成为现代社会犯罪中一个越来越突出的问题。尽管在我国现代有关犯罪的法律法条中还没有出现“青少年犯罪”这一称谓，但作为青少年这一特殊群体中的部分个体因其某些已构成“犯罪”的行为给社会造成的负面影响，已成为世界各国共同关注的热点，任何现象的产生和存在都有其特定的原因和条件。作为一种复杂的社会现象，未成年人犯罪也不例外。制约和决定未成年人犯罪的原因多种多样，错综复杂。因此为了探究未成年人犯罪的原因，有必要运用多种学科作为工具进行全方位、多角度的分析。对待青少年犯罪，要以预防、教育为主、惩戒为辅。针对不同年龄段青少年犯罪的特点，做好青少年犯罪的预防。本文首先从法理上对青少年犯罪进行了界定，分析了青少年违法犯罪的主客观原因，简要介绍了预防和减少青少年违法犯罪的对策。
关键词: 未成年人 ；犯罪；原因；预防；立法完善
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辽宁工程技术大学毕业论文
ABSTRACT
In our country the minor crime usually refers to the full 14 years of minors under the age of 18 the implementation of the criminal law and the relevant criminal aw the crime. Juvenile crime has become a modern society in a more prominent issue. Despite China's modern criminal law, the law also does not appear in the "juvenile delinquency" title, but as a youth in this special group of individuals because some have been part of a " crime" of the negative social impact, the world has become a common concern, any phenomenon and existence has its own specific causes and conditions. As a complex social phenomenon, juvenile delinquency is no exception. Restrict and determine the reasons for juvenile delinquency diverse, perplexing. Therefore, in order to explore the reasons for juvenile delinquency, it is necessary to use a variety of disciplines as a tool to carry out all-round,by the analysis. Treatment of juvenile delinquency, it is necessary to prevent, education, discipline as a supplement. In view of the different characteristics of the age of juvenile delinquency, do the prevention of juvenile delinquency. This article first from the legal principle theory of law on juvenile delinquency were defined, the analysis of juvenile delinquency in the subjective and objective reasons, gave a briefing on preventing and reducing juvenile delinquency.
Keywords: minors; Crime; Reason; Prevent; legislation
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辽宁工程技术大学毕业论文
目录
摘要·····················································错误！未定义书签。
Abstract··················································III 0前言·····················································1 1青少年的犯罪现状 ··············································1
1.1青少年犯罪呈上升趋势··································1
1.2我国青少年犯罪较以往所呈现的不同的特点················2 2青少年犯罪的成因分析····································3
2.1受社会经济负面效应的影响·······························3
2.2受社会不良文化影响·····································3
2.3不正确的家庭教育给孩子造成难以矫治的人格障碍···········3
2.4学校缺乏给学生一个全面发展的良好环境························4
2.5学校道德法律教育缺乏·····································4
2.6相关立法滞后··················································5 3青少年犯罪的有效预防·····································5
3.1强化家庭教育···········································5
3.2政府应保障青少年有更多的就业机会·······················5 错误！未定义书签。 IV
辽宁工程技术大学毕业论文
3.3学校应加强法制教育·····································6
3.4设置心理咨询机构·······································6
3.5政法部门应做好打击危害青少年的各种犯罪及改造工作·······6
3.6借鉴国外经验用以完善青少年犯罪立法·····················6 4结论·····················································7 5致谢····················································8 6参考文献·················································9
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第二篇：毕业论文前言
摘 要
近年来，随着经济的发展，我国的城市化水平加快和人民生活水平的提高，汽车的数量不断增加。但与此同时，汽车停车场地的增长却不能与之同步，汽车泊位与汽车数量严重比例失调，由此带来停车难，违章停车，停车管理困难等一系列问题。由此，自动化立体车库便应运而生了。
本篇论文论述了我在做大学本科工学学士毕业设计期间所从事的设计课题——自动化立体停车设备的设计过程。
目前社会上有很多成熟技术的停车设备比如：升降横移类；垂直循环类；水平循环类；平面移动类；巷道堆垛类；垂直升降类；简易升降类。通过对这些车库类型特点的比较与分析，我最终选择了巷道堆垛类作为设计的车库类型。
论文以研究工作的进展顺序为序，分章、节逐一论述了课题的来源，目的及意义，设计过程，在设计中遇到的问题与难点及其解决方法与措施。在设计过程部分，详细论述了设备总体结构设计、横移传动系统设计、运输传动系统设计、存取车结构设计、控制系统设计和安全防护设计 。
关键词 立体停车设备 结构设计 控制系统 PLC 安全性
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ABSTRACT
In recent years, along with the economical development, our country urbanized level sped up with the lives of the people level enhancement, the automobile quantity unceasingly increases. But at the same time, the automobile parking
location growth actually cannot with it synchronization, the automobile berth and automobile quantity serious imbalance, from this brings stops difficultly, violates regulations to stop, stop control difficulty and so on a series of questions. From this, the automated three-dimensional garage has then arisen at the historic moment .
The design topic ——automation three-dimensional
parking facility design process which this paper elaborated me to have been making university undergraduate course
technology bachelor graduation project period is engaged in . At present in the society has very many mature technical the parking facility for instance: Rises and falls
horizontally moves the kind; Vertical circulation class; Level circulation class; Plane migration class; The tunnel piles up the kind; Vertical fluctuation class; Simple fluctuation class. Through to these garage type characteristics comparisons and the analysis, I has finally chosen the vertical fluctuation class achievement design garage type . The paper take research work progress order as a foreword, divided chapter, the
festival elaborated the topic origin one by one, the goal and the significance, the design process, met the question and the II
difficulty and its the solution and the measure in the design. Are partial in the design process, in detail elaborated the equipment overall structural design, horizontally moved the transmission system design, the promotion transmission system design, the deposit and withdrawal vehicle structural design, the control system design and the safe protection design. KEYWORDS solid parking equipment constructiond esign control system P L C secrity
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目 录
摘要…………………………………………………………………Ⅰ Abstract……………………………………………………………Ⅱ
第1章 绪论 ……………………………………………………… 1
1.1 课题的来源,目的及意义……………………………………1
1.2 机械式立体停车库的概述………………………………… 2
1.2.1 几种机械停车设备的特点及比较……………………3
1.3 自动化立体车库的控制系统………………………………4
1.3.1 自动收费管理系统……………………………………5
1.3.2 自动存取车系统………………………………………5
1.3.3 远程诊断系统…………………………………………5
1.3.4 自动道闸………………………………………………6
1.3.5 监控安保系统…………………………………………6
1.4 国内外研究现状……………………………………………6
1.5 研究的主要内容……………………………………………8
1.6 课题的主要技术指标………………………………………9
第2章 立体车库总体结构的研究及设计…………………………10
2.1 机械立体车库的总体方案确定……………………………10
2.2 传动机构的主要参数………………………………………12
2.3 升降驱动系统………………………………………………12
2.4 车辆存取方式………………………………………………13
2.5 巷道堆垛式立体停车系统的控制系统……………………16
第3章 机械系统传动设计…………………………………………18
3.1 传动链和链轮的选择………………………………………18
3.2 链的设计计算………………………………………………17
3.3 链轮的设计计算……………………………………………22
3.3.1 设计链轮尺寸…………………………………………22
3.3.2 确定链轮结构…………………………………………29
3.4 滚子链的静强度计算……………………………………… 29
3.5 链条的使用寿命计算……………………………………… 31 IV
3.6 链条的耐磨工作能力计算…………………………………33
3.7 存取机构电机与减速器……………………………………36
3.7.1 横移机构电机…………………………………… 36
3.7.2 微横移机构电机………………………………………36
3.7.3 选用减速器……………………………………………37
3.7.4 存取机构中联轴器的选择……………………………37
3.8 轴承的选择………………………………………………… 38
3.9 轴的选择…………………………………………………… 38
3.9.1 选择材料…………………………………………… 38
3.9.2 初步估算轴径……………………………………… 39
3.9.3 轴的结构设计…………………………………………39
3.9.4 轴上的受力分析………………………………………40
3.9.5 轴的强度校核…………………………………………41
3.10 板式输送机……………………………………………… 43
3.10.1 板式输送机主要部件的结构形式…………………43
3.10.2 主要参数的选择与计算……………………………46
第4章 立体车库提升系统的设计…………………………………49
4.1 立体车库提升系统的整体布置……………………………49
4.2 曳引系统研究分析…………………………………………50
4.2.1 提升系统曳引力的分析计算…………………………50
4.2.2 与曳引力有关的因素及其分析…………………… 51
4.3 系统曳引能力的验算………………………………………53
4.4 安全机构的设计……………………………………………54
4.4.1 超速保护系统…………………………………………55
4.4.2 撞底缓冲装置…………………………………………56
第5章 经济性分析……………………………………………… 58 结论………………………………………………………………… 61 专题部分…………………………………………………………… 63 致谢………………………………………………………………… 75 参考文献…………………………………………………………… 76 附录1……………………………………………………………… 77 附录2……………………………………………………………… 83
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