Logarithmic spiral arrangement method of positive cutters on cutterhead of tunnel boring machine
A technique of tunnel boring machine and layout method, which is applied to tunnels, earthwork drilling, mining equipment, etc., can solve problems such as large overturning moment, inconsistent wear, and uneven force on tools, and achieve uniform force, simple layout method, and The effect of uniform force on the cutterhead as a whole
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[0032] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0033] The logarithmic spiral arrangement method of positive knives on the tunnel boring machine cutterhead according to the present invention uses m logarithmic spirals combined with n concentric circles to determine the arrangement position of the cutters on the tunnel boring machine cutterhead; The concentric circles are the rotary paths of different positive knives on the cutter head; the logarithmic helix equation is ρ=ρ 0 ×e θcotα , where: ρ is the polar diameter, which means the distance from any point on the logarithmic spiral to the origin of coordinates; ρ 0 is the initial polar diameter; θ is the polar angle; α is the helix angle, indicating the angle between the polar diameter of any point on the logarithmic helix and the tangent direction of the point; (ρ, θ) is the polar coordinate position of any point on the helix; The included a...
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