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Rice character type structure arrangement method of hobs of full section rock digging machine

A layout method and technology of the shape of a rice, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the research on the automatic design method of the rice-shaped layout of the tool that has not been seen, the automatic design method of the hob position is not given, and there is no consideration Issues such as various technical requirements for hob arrangement

Inactive Publication Date: 2013-06-19
XCMG KAIGONG HEAVY IND NANJING
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

"This patent only gives the rules that should be followed for the layout of the front hob and the side hob, but it does not consider various technical requirements for the hob layout, such as the requirements for the slag outlet on the cutter head and the requirements for splitting. and manhole requirements, and also does not give an automated design method for determining the position of the hob according to this rule
[0005] To sum up, scholars at home and abroad have made some preliminary research results in the research on the mechanism of rock breaking, the calculation of the force on the cutter head of the roadheader, and the selection of the cutter on the cutter head of the roadheader, but there is no research on the cutting tool from the perspective of layout optimization. Research on Automatic Design Method of Font Arrangement

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  • Rice character type structure arrangement method of hobs of full section rock digging machine
  • Rice character type structure arrangement method of hobs of full section rock digging machine
  • Rice character type structure arrangement method of hobs of full section rock digging machine

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Embodiment Construction

[0033] The implementation of the present invention is described in detail in conjunction with the accompanying drawings and the technical scheme. The present invention takes a water diversion tunnel project as an example to design the hob arrangement on the cutter head of the shield machine. 51 hobs are arranged on the panel cutter head. The known conditions are as follows : ①Geological parameters: The rocks in the geological section are mainly mixed granite (mixgranite), the rock unconfined shear strength τ=5~8(MPa), the rock uniaxial compressive strength σ=50~80(MPa),② The basic parameters of the cutterhead of the roadheader: the radius of the cutterhead R=4.015m, the speed of the cutterhead ω=6(r / min)=0.6283rad / s, the mass of each disc-shaped hob M=200kg, and the diameter D= 19 inches = 483mm, depth of cut h = 10mm, tool edge angle α = 2.09434rad. center knife n 1 = 8, side knife n 2 =10, positive knife n 3 =33, the technical requirements for the overall cutterhead layou...

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Abstract

The invention discloses a rice character type structure arrangement method of hobs of a full section rock digging machine, belonging to the design field of a cutter disk of the full section rock digging machine. Geologic parameters and digging parameters are confirmed according to a geologic report of tunnel engineering, wherein the parameters comprise rock unconfined shear strength, rock uniaxial compressive strength Sigma, rock brazilian tensile strength Sigma Tau, rock stability, digging speed and cutter disk rotate speed. An automatic solve model of the arrangement problem of the hobs on the cutter disk is built, so as to confirm the arrangement position of the positive hobs and the edge hobs with the rice character type arrangement method and a synergetic evolution method. When the hobs are arranged on the faceplate type cutter disk, the technical performance index needs to be met comprises side force to the cutter disk, the overturning moment, interfere area, and the quantity and the mass center of non-order cock fragmentation of the adjoining hobs. The method can fast and effectively confirm the arrangement position of the cutter on the cutter disk, prolong the service lifeof the cutter disk of the digging machine, the cutter and the large bearing of the cutter disk, reduce the shake and the noise of the digging machine, and improve the digging efficiency of the cutterdisk.

Description

technical field [0001] The invention belongs to the field of full-section rock excavation machine cutterhead design, considers various technical requirements in hob arrangement design and cutterhead manufacturing and assembly process requirements, and particularly relates to a method for arranging hobs in the shape of a rice-shaped full-section rock excavator. Background technique [0002] Full-face rock boring machine (TBM) is a large-scale special-purpose construction machine for tunnel boring, which is widely used in subway, railway, highway, municipal, hydropower tunnel projects, and is expensive. Among them, the layout design of the hob on the cutter head is the core technology of the roadheader design. Reasonable cutter layout plays a decisive role in improving the mining performance of the cutter head, the life of the tool and the life of the large bearing of the cutter head, reducing the vibration of the roadheader, and reducing noise. As a result, if the cutting too...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/11
Inventor 孙伟霍军周
Owner XCMG KAIGONG HEAVY IND NANJING
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