The quality of gear reducer overhaul plays a decisive role in the stability of coal mine equipment overhaul.This paper introduces the design of a loading test system for gear reducer in coal mine.Through the establishment of the test bench,the loading test,temperature rise test and efficiency test of gear reducer overhaul can be realized,so as to improve the quality of gear reducer and avoid the abnormal operation of equipment due to gear reducer installation failure.This reducer loading test-bed can be widely used in the overhaul industry of continuous excavation equipment.
基于RB/T214-2017《检验检测机构资质认定能力评价检验检测机构通用要求》和CNAS-CL01:2018《检测和校准实验室能力认可准则》等标准,介绍了检测样品数字化管理系统研发的功能需求、系统架构、系统应用.结果表明:检测样品数字化管理系统提升了实验室数字化、精细化管理水平,为实验室相关业务提供了数字化平台与解决方案,满足日常管理要求,保证了检测样品的严格管理和控制,在提高实验室运行效率、辅助实验室管理等方面取得了预期效果.
针对CYTJ45液压钻车凿入系统,应用冲击波理论和累积损伤理论进行了钎杆应力计算、寿命估测和凿入效率分析,并和气动凿岩机凿入系统做了比较.研究表明:采用液压凿岩机时,在传递大冲击能量情况下,钎杆应力峰值降低,钎杆凿入效率和工作寿命显著增大.文中阐明了采用液压凿岩机的冲击凿入系统在能量传递方面具有明显的优势.
论述了山特维克旗下拉姆(Rammer)公司液压破碎锤概况,整理分析了卓越系列(Excellence Line)、实用系列(Performance Line)及其下分产品的技术特点、型号与技术参数.
With the trend of localization of imported coal machine reducers being imperative, the traditional reducer development method has the problems of a high failure rate in the design stage, a long development cycle, and high manufacturing costs. Based on reverse engineering, this paper discusses the process of localization and development of imported coal machine reducers and focuses on the five steps from the reducer design stage. The determination of the boundary parameters of the reducer, the acquisition of the surface data and performance data of the reducer parts, the three-dimensional modeling, the virtual assembly, and the interference inspection are analyzed. This paper summarizes the key technologies of the localization development of the reducer and forms an effective method for the localization development of the imported coal machine reducer. Finally, the feasibility and effectiveness of the localization development method of the reducer are verified by an example.
