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毕 业 论 文题目：液压锚杆机组合阀的设计 院 部 专业班级 届 次 学生姓名 学 号 指导教师 二一年六月十五日目录摘要6引言81组合阀体的基本原理和公式分析101.1旋转切割与推进自动适应基本原理及公式的推导111.2公式分析152组合控制阀换向阀的设计及计算162.1换向阀的压力损失分析及确定162.1.1决定阀前孔直径172.1.2决定阀芯外径、阀杆直径和中心孔直径172.1.3决定换向阀的最大开口长度182.1.4决定阀体沉割槽直径和宽度182.2换向阀的泄漏分析及有关尺寸的确定192.3换向可靠性分析及操作力计算212.3.1摩擦阻力222.3.2液动力252.3.3阀芯两端回油压差引起的轴向力252.3.4弹簧力262.3.5操纵力的决定272.4换向平稳性分析272.5换向阀弹簧的设计283减压阀的设计303.1减压阀简介303.2减压阀的尺寸设计313.3减压阀弹簧的设计334整体尺寸的确定355密封装置的设计及选择375.1密封的类型与选择方法385.1.1静密封385.1.2动密封395.2密封的选择435.3组合控制阀有关部位密封形式及材料的选择445.3.1各加工工艺孔的密封445.3.2换向阀前、后端盖的密封445.3.3减压阀前、后端盖的密封456组合阀各零件的制造选择及总体装配467技术经济分析468结论47致谢48参考文献49ContentsSummary6Introduction81 Body composition analysis of the basic principles and101.1 Rotary cutting and promote the basic principles of automatic adaptation and Formula111.2 Formulas152 Combination control valve hydraulic valve design162.1 Valve of the pressure loss analysis and to determine162.1.1 Valve hole diameter before the decision172.1.2 Decision spool diameter, stem diameter and center hole diameter172.1.3 Determine the maximum valve opening length182.1.4 Shen decided to cut body diameter and the width of the groove182.2 Valve leakage analysis and determination of the size192.3 For reliability analysis and operation of the force calculation212.3.1 Friction222.3.2 Fluid Power252.3.3 Plug both ends of the return oil pressure difference caused by252.3.4 Spring force262.3.5 Control force of a decision272.4 For the stability analysis272.5 Valve spring design283 Valve design303.1 Valve Description303.2 The size of valve design313.3 Valve spring design334 Determine the overall size355 Seal design and selection375.1 Sealing Types and Selection385.1.1 Static Seals385.1.2 Dynamic Sealing395.2 Seal Selection435.3 Combination control valve seal forms and materials related to site445.3.1 Sealing the hole processing technology445.3.2 Valve before and after sealing cover445.3.3 Valve before and after sealing cover456 The combination of valve components and general assembly467 Technical and economic analysis468 Conclusion47Thanks48References49液压锚杆机组合阀的设计【摘要】本设计针对液压锚杆机组控制阀进行改进设计，采用旋转切割液压马达与推进液压缸并联的油路连接方式，使旋转切割与推进自动适应，而且推进速度具有较高的负载刚度。避免了原来的旁路节流调速回路速度刚度低，必然会导致推进速度受负载的影响很大的情况的发生，大大提高了作业效率。 通过对旋转切割与推进自动适应基本原理的研究及公式的推导，验证了旋转切割液压马达与推进液压缸并联的油路连接方式的优点，确定了研究方向，进而通过对液压原件、机械设计、现代机械设计方法、弹簧等有关基础书籍的学习与研究，经过大量的研究与计算，设计出了该组合控制阀的基本外形及尺寸，最终通过相关技术书籍与指导老师的耐心指导，确定了该设计的具体形状、尺寸及加工工艺。并通过CAXA软件进行工程图绘制与修改。关键词：液压锚杆机 并联系统 组合控制阀 设计 CAXAHydraulic Valve Bolt Machine CombinationThe objective of this design for the hydraulic control valve unit is improved bolt design, with rotating cutting hydraulic motors and hydraulic cylinders in parallel to promote oil line connection to rotary cutting and advance automatically adjust and advance speed with a high load stiffness. Bypass to avoid the original stiffness of the low speed throttle speed control loop, will inevitably lead to advancing speed by the load of a great happening, greatly improved work efficiency. By automatically adapting rotary cutting and basic principles of promoting research and the derivation of the formula is verified with the forward rotating cutting cylinder hydraulic motor oil line connections parallel the advantages of a study to determine the direction, then through hydraulic original, Machine Design, Modern mechanical design , Spring and other books relating to the basis of learning and research, through extensive research and calculations to design the basic shape combined control valve and size, the final guidance by the relevant technical books and patience and guidance of the teacher to determine the specific shape of the design, size and processing technology. CAXA software works by mapping and modification. Key words: hydraulic bolting machine; parallel system; combination control valve; design; CAXA 40引言液压锚杆钻机是锚杆支护作业中的一种新型产品，它以液压油为工作介质，具备工作压力高，适应范围广，效率高，重量轻且操作方便的显著特点。可在 f 8 的各种岩石硬度的巷道内实现高速高质量的钻进工作，在有压缩空气的巷道内使用可以节能增效，在没有敷设压风管路的巷道内是用户的必备设备。在综掘巷道内可与综掘机配套使用。锚杆支护是有宜于加快井巷掘进速度、提高顶板支护效果、降低支护劳动强度和减少支护材料消耗的先进技术。我国仅国有重点煤矿每年掘进500多万米巷道，1997年末，锚杆支护率全国平均已达31.5%，按规划，到2000年，锚杆支护率平均应达到50%，但已有大同、邢台、平顶山、铁法、西山、龙口等16个矿务局率先使锚杆支护率