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Design and Research on Hydraulic Roofbolter

Author: YangShanGuo
Tutor: ZhangYongZhong´╝ŤDuChangLong
School: China University of Mining and Technology
Course: Mechanical Design and Theory
Keywords: Roofbolter Non-circular planetary gear hydraulic motor Robust Optimization Design Anchor drilling characteristics Finite Element Analysis Design Research
CLC: TD353.6
Type: PhD thesis
Year: 2009
Downloads: 705
Quote: 4
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Abstract


The Roofbolter bolting construction supporting one of the key equipment, impact The quality of support and support the pace. Adoption rotary cutting mode broken the rock drilling monomer Roofbolter is the leading product of the current drilling equipment. But the body is bulky, low reliability restricting them to further promote the use of the urgent need to develop high-performance bolt drilling equipment. In response to this situation, the paper launched a the hydraulic Roofbolter design research. The first rock breaking mechanism Roofbolter. Paper system analysis to study the characteristics of Roofbolter rock breaking, demonstrated in the rotary cutting action under rock physical properties and mechanical properties, as well as the main factors affecting the drilling speed and the effect of the rotary cutting rock breaking. This paper presents a non-circular planetary gear hydraulic motor for Roofbolter and on the basis of the analysis of the structure and performance of different types of non-circular planetary gear hydraulic motor, hydraulic motor for non-circular planetary gear design objective function and the constraints more design variables for discrete variables, some parameters are interrelated and their relationship is not easy to directly see that the characteristics of the robustness of the design method based on orthogonal experiment to optimize the design of non-circular planetary gear hydraulic motor. Established a mathematical model of the non-circular planetary gear hydraulic Ma Dalu bar design, the quality characteristics of the design data, obtained by calculating the combination of structural parameters to meet the design requirements of the motor to the signal-to-noise ratio for the tool, and in a more relaxed process conditions, the motor has strong robustness. Robust optimization design based on the completion of the non-circular planetary gear hydraulic motor new hydraulic Roofbolter, product design, to commission processing factory prototype prototype. The elongated bolt drilling in rotary cutting rock breaking drilling process complex conditions by a complex external force complex deformation and kinematics, dynamics state. Papers using the finite element simulation software ANSYS software overall anchor drill statics and dynamics were more accurate, reliable analysis and research. The research topics include the anchor drill finite element modeling, boundary conditions, constraints and loads loads drilling force and deformation characteristics of well drilling may at the same time by the excitation of torsional vibration, longitudinal vibration and lateral vibration modal analysis reasonably determine scientifically designed anchor drill rig, drilling parameters and guidance to actual production provides an important reference. Based on reasonable assumptions, the paper established a mathematical model of the static and dynamic characteristics of hydraulic roof bolter, study the static and dynamic characteristics, got its start at rated load conditions speed characteristic equation, load characteristics under normal operating conditions equations and the input of the motor output speed of the step flow and step load input dynamic response equation. Characteristic mathematical model of the rig parameter values ??determined by tests reflect rig static and dynamic characteristics of the test curve, and its simulation software MATLAB simulation. Simulation curve and test curve is a good agreement, and show that the established reasonable description of the physical characteristics of Roofbolter model, the mathematical model and the simulation model to verify the correctness of the theoretical analysis. Drill through underground real test, that reasonable the hydraulic Roofbolter design, with a compact, light weight, fast drilling speed, easy operation, high reliability, fully able to meet the use requirements of the mine site.

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Roadway support > Bolt support
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