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为研究大三角变幅型旋挖钻机的力学性能,在详细分析大三角变幅型旋挖钻机提钻和钻进工况下受力情况的基础上,建立了这两种工况下的数学模型。在Simulink仿真平台上建立基于MATLAB函数的仿真模型,并对摇臂不同转角时,大三角变幅型旋挖钻机各部件的受力进行了仿真分析。研究结果表明:在提钻和钻进工况下,桅杆油缸和动臂油缸的载荷与外力有关,与铰接点处的约束反力无关,桅杆油缸作用力影响动臂油缸的作用力;提钻工况下,动臂油缸的载荷超过桅杆油缸的载荷,最大的约束反力出现在摇臂与回转平台的铰接处;钻进工况下,桅杆油缸的载荷超过动臂油缸载荷,最大的约束反力出现在大三角支撑机构与回转平台的铰接处。同时,对提钻工况下的动臂油缸进行了试验,试验数据和仿真数据具有相同的变化趋势,验证了数学模型的合理性。分析结果对大三角变幅型旋挖钻机的设计和优化提供了参考。
In order to study the mechanical properties of the large amplitude rotary drilling rig in the Greater Triangle Area, based on the detailed analysis of the stress conditions under the drilling and drilling conditions of the large triangular rotary drilling rig, the mathematics model. Based on Simulink simulation platform, a simulation model based on MATLAB function is established. Simulating the force of each component of the large triangle rotary drilling rig with different rotation angles of the rocker arm. The results show that under the condition of drilling and drilling, the loads of mast cylinder and boom cylinder are related to external force, which has nothing to do with the restraining reaction force at hinge point. The force of mast cylinder affects the force of boom cylinder. Under the working conditions, the load of the boom cylinder exceeds the load of the mast cylinder, and the maximum restraining reaction force appears at the hinge of the swing arm and the swing platform; in the drilling condition, the load of the mast cylinder exceeds the load of the boom cylinder, and the maximum constraint Reaction force appears in the triangle between the support mechanism and the rotary platform hinge. At the same time, the boom cylinder under the condition of drilling is tested, the experimental data and the simulation data have the same trend, which proves the rationality of the mathematical model. The results of the analysis provide a reference for the design and optimization of the large delta rotary drilling rig.