地下铲运机反转六连杆工作装置优化设计与动力学分析-机械设计及理论专业论文.docxVIP

万方数据 万方数据 ABSTRACT THE OPTIMIZATION DESIGN AND DYNAMICS ANALYSIS OF THE REVERSAL SIX-BAR WORKING DEVICE OF LHD ABSTRACT Trackless mining technology of underground mine still occupies a dominant position at present. LHD is the main mining equipment of underground trackless mining and its performance and reliability are directly related to the productivity of the entire mine. The working device is an important part of LHD. Reasonable design of working device directly affects the overall performance and efficiency. Therefore, it is very necessary to research a new design method of LHD working device. The reversal six-bar working device has advantages such as shovel strength, compact structure, nice view of the driver, etc. It is widely used in the LHD working device.The design keys of the reversal six-bar working device are to determine the hinge point position and the strength design of the components. Usually, the traditional graphic method to analogy, trial and error is adopted in the design of the hinge point positions of reversal six-bar linkages. Although this method is simple, it has disadvantages such as big blindness, big workload, difficult to obtain the optimal design scheme, etc. To solve these problems, a method based on the dynamic simulation software ADAMS is proposed. The parameterized model is set up, the objective function is determined, the optimization analysis is performed. The optimal design scheme about hinged points is obtained based on the given constraints. The working condition of the working device is very poor and often undergoing a great deal of torque and impact load, so the strength design of its components is particularly important. In traditional method, only static analysis and calculation of typical working conditions are performed. The study of dynamic characteristics is rarely involved. There is a big error design results. This method cant already meet the requirement of modern design. The boom, the main load bearing component, is