立井提升钢带过卷缓冲装置特性与匹配研究

发布时间：2018-03-14 12:56

本文选题：立井提升系统　切入点：过卷缓冲　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着煤矿提升速度不断提高,立井提升安全越来越受到重视。由于矿井提升过卷事故常造成严重后果,威胁提升安全,《煤矿安全规程》规定在过卷高度或过放距离内应设有性能可靠的缓冲装置,以防止发生严重安全事故。钢带式过卷缓冲装置由于其结构简单、缓冲稳定性好、可重复使用等优点被广泛应用于煤矿提升系统。目前对各种过卷缓冲装置本身缓冲特性的研究较多,但对钢带式过卷缓冲装置特性及其与提升系统之间选型匹配方面的研究还不够。因此,论文以钢带式过卷缓冲装置特性及其与提升系统的匹配关系为主要内容进行研究,以便为不同的提升系统工况选择匹配的钢带式过卷缓冲装置提供参考。通过查阅大量相关文献,针对塔式立井多绳摩擦提升系统,指出其提升过程中存在的过卷问题,分析过卷原因,并对过卷分类,对过卷缓冲装置国内外研究现状进行分析,确定本文研究的过卷缓冲装置对象为钢带式过卷缓冲装置。通过对多自由度提升系统动力学模型进行简化,建立简易力学模型。对提升系统正常提升中重载提升和重载下放两种不同工况进行力学特性分析。在过卷情况下,分三种不同阶段:安全制动阶段、过放缓冲制动阶段和过卷过放缓冲阶段,对两种不同工况下这三种阶段分别进行力学特性分析。基于Comsol Multiphysics软件对钢带式过卷缓冲装置进行仿真建模,对钢带应变特性进行分析,分析钢带的厚度、宽度以及压辊直径对钢带强度的影响;对动辊的压力特性进行分析,分析动辊压力与动辊压缩量以及机械结构间的关系;对钢带的制动特性进行分析研究,分析制动力与动辊压缩量、动辊压力以及机械结构间的关系特性。分别从钢带过卷缓冲器的长度、钢带过卷缓冲器的缓冲制动力和过卷、过放侧缓冲制动力的匹配三个方面对钢带式过卷缓冲装置与提升系统的匹配关系进行分析研究。对过卷时不同工况下提升容器的过卷过放缓冲减速度进行分析并通过淮南矿区某矿副井提升机系统参数进行实例分析验证。本文研究结果为煤矿提升系统钢带式缓冲器装置的选型及其与提升系统的匹配研究提供一定的参考,具有很强的现实意义和实际应用价值。
[Abstract]:With the increasing speed of coal mine hoisting, the safety of shaft hoisting has been paid more and more attention. In order to prevent serious safety accidents, the Coal Mine Safety regulations stipulates that a reliable buffer device shall be provided within the overwinding height or overlaying distance to prevent serious safety accidents. Steel belt overcoiling buffer device has good buffer stability due to its simple structure. The advantages of reusability are widely used in coal mine hoisting systems. At present, many researches have been done on the buffering characteristics of various overcoiling buffers. However, it is not enough to study the characteristics of steel strip overcoiling buffer device and its matching with hoisting system. Therefore, the main content of this paper is to study the characteristics of steel strip over-coiling buffer device and its matching relationship with hoisting system. In order to provide a reference for different lifting system to select matching steel strip overcoiling buffer device. Through consulting a large number of relevant documents, aiming at the tower shaft multi-rope friction lifting system, the paper points out the overwinding problem in the process of hoisting. The reason of overwinding is analyzed, and the classification of overwinding is analyzed, and the research status of overcoiling buffer device at home and abroad is analyzed. It is determined that the object of the overwinding buffer device studied in this paper is the steel strip overcoiling buffer device. The dynamic model of the multi-degree-of-freedom hoisting system is simplified. A simple mechanical model is established to analyze the mechanical characteristics of heavy lift and heavy load transfer in normal hoisting system. In the case of overwinding, there are three different stages: safe braking stage, The mechanical characteristics of the three stages are analyzed under two different working conditions. Based on the Comsol Multiphysics software, the simulation model of the steel strip overcoiling buffer device is established, and the strain characteristics of the steel strip are analyzed. This paper analyzes the influence of strip thickness, width and roll diameter on the strength of steel strip, analyzes the pressure characteristics of the moving roll, analyzes the relationship between the pressure of the moving roll and the pressure reduction of the moving roll and the mechanical structure, and analyzes the braking characteristics of the strip. The relationship between braking force and dynamic roll pressure, dynamic roll pressure and mechanical structure is analyzed. The matching relationship between the steel strip overcoiling buffer device and the hoisting system is analyzed in three aspects of the matching of the braking force of the overwinding buffer. The reduction speed of the overwinding and overlaying buffer of the hoisting vessel under different operating conditions is analyzed and analyzed. Through the analysis and verification of the system parameters of auxiliary shaft hoist in a certain mine in Huainan mining area, this paper provides a certain reference for the selection of steel belt buffer device in coal mine hoisting system and its matching with hoisting system. It has strong practical significance and practical application value.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD53

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