Full-section tunneling machine for changing connecting radius between cutter head and rotary support
A tunnel boring machine and slewing support technology, applied in tunnels, mining equipment, earthwork drilling and mining, etc., can solve the problems of insufficient rigidity of the cutter head of the full-section tunnel boring machine, large vibration of the full-section tunnel boring machine, and tool damage, etc., to achieve The effect of improving work efficiency, increasing rigidity and reducing vibration
Active Publication Date: 2015-06-24
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
[0002] At present, the connection size between the cutterhead of full-face tunnel boring machine (including full-face rock boring machine (TBM) and shield machine) and its rotary support (big cutter head bearing) takes structural factors into consideration. The radius r of the center circle of the roller contact raceway is 0.25 to 0.40 times the radius R of the connecting cutter head, which results in insufficient rigidity of the cutter head of the full-section tunnel boring machine, resulting in large vibration of the full-section tunnel boring machine during operation, and the tool severely damaged
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[0026] The known cutterhead parameters are shown in Table 1. In this embodiment, 9 schemes have been formulated. The support radius of each scheme and the variation value of the deflection with the radius of the cutterhead under this support scheme are shown in Table 2. The deformation of different points on the radius of each scheme is shown in Table 2. figure 2 As shown (the curve of scheme 1 and scheme 2 almost overlap, in order to make the figure clear, the curve corresponding to scheme 1 is not drawn). From figure 2 It can be seen that schemes 5 to 8 (corresponding to the cutterhead support radius of 0.5-0.8R) have relatively uniform cutterhead deformation (the mean square error of deformation is about one-tenth of other schemes), that is, the cutterhead support rigidity is good . From the mean square error of the deformation, it can be seen that scheme 5, scheme 6, scheme 7 and scheme 8 are significantly better than other schemes. Considering the difficulty of suppor...
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The invention in particular relates to a full-section tunneling machine for changing connecting radius between a cutter head and a rotary support, which belongs to the technical field of full-section tunneling machines. The center circle radius r of a main propelling roller contact raceway of the cutter head rotary support of the traditional full-section tunneling machine is adjusted to 0.5-0.7 R, wherein R is the diameter of the cutter head. Through the adoption of the design scheme, the rigidity of the cutter head of the full-section tunneling machine in the operation process is enhanced, the vibration of the cutter head during working is reduced and the operation efficiency of the tunneling machine is increased.
Description
technical field [0001] The invention belongs to the technical field of full-section tunnel boring machines, in particular to a full-section tunnel boring machine capable of changing the connection radius between a cutter head and its rotary support. Background technique [0002] At present, the connection size between the cutterhead of full-face tunnel boring machine (including full-face rock boring machine (TBM) and shield machine) and its rotary support (big cutter head bearing) takes structural factors into consideration. The radius r of the center circle of the roller contact raceway is 0.25 to 0.40 times the radius R of the connecting cutter head, which results in insufficient rigidity of the cutter head of the full-section tunnel boring machine, resulting in large vibration of the full-section tunnel boring machine during operation, and the tool Badly damaged. Contents of the invention [0003] The purpose of the present invention is to increase the rigidity of the ...
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IPC IPC(8): E21D9/087E21D9/11
Inventor 张照煌孟亮李福田王江伟孙飞
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)