Shield tunneling machine cutterhead suitable for expansible old clay

A shield machine and expansive technology, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problem that the rationality of the distribution position and the firmness of the installation cannot meet the requirements, the abnormal wear of the cutter head and the cutter, and the impact on the shield machine. Improve the construction efficiency of shield tunneling, optimize the cutting trajectory and cutting sequence, and achieve the effect of novel structural design

Inactive Publication Date: 2016-10-26
CHINA RAILWAY 16 BUREAU GRP BEIJING METRO ENG CONSTR +1
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  • Summary
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  • Claims
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AI Technical Summary

Problems solved by technology

However, for the expansive old clay stratum, the existing shield machine cannot fully adapt to it, and abnormal wear of the cutterhead and cutter often occurs, and the distribution of the fishtail scraper, tooth cutter, edge scraper, tearin

Method used

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  • Shield tunneling machine cutterhead suitable for expansible old clay
  • Shield tunneling machine cutterhead suitable for expansible old clay

Examples

Experimental program
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Effect test

Embodiment Construction

[0021] See attached picture:

[0022] The shield machine cutter head suitable for expansive old clay includes a disk body 1, a composite panel 2 is arranged in the center of the disk body 1, and four main ribs 3 and four spokes 4 are arranged on the periphery of the composite panel 2. The four main ribs 3 are connected with the combination panel 2 to form a cross shape, and the disc body between two adjacent main ribs 3 is provided with spokes 4, and the ends of the spokes 4 are fixed with the combination panel 2, and the spokes 4 and the combination panel 2 are fixed. The main ribs 3 are fixed by steel grids 5 arranged at annular intervals,

[0023] The center of the combination panel 2 is equipped with a reinforced central fishtail scraper 6 arranged along the diameter direction, and the number is 12. The central fishtail scraper is arranged in a row, and the reinforced central fishtail scraper 6 and two of them on a straight line The centerlines of the main floors coincide...

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Abstract

The invention discloses a shield tunneling machine cutterhead suitable for expansible old clay. The shield tunneling machine cutterhead comprises a cutterhead body, a combined faceplate is arranged at the center of the cutterhead body, four main ribbed plates and four spokes are arranged around the combined faceplate, the main ribbed plates and the combined faceplate are connected to form a cross, the spokes are arranged on the cutterhead body between each two adjacent main ribbed plates, the tail ends of the spokes are fixed to the combined faceplate, the spokes and the main ribbed plates are fixed through steel grids which are annularly arranged at intervals, a reinforced central fishtail scraper which is arranged along the diameter direction is mounted at the center of the combined faceplate, and the reinforced central fishtail scraper is coincident with a central line of the two main ribbed plates on a same straight line. The shield tunneling machine is novel in structural design, aperture rate of the cutterhead is increased, fluidity of muck is improved, probability of forming a mud cake on the cutter head is avoided, cutting track and cutting sequence of the cutterhead are optimized, wear resistance of the whole cutterhead is improved, adaptability of a shield tunneling machine in expanding oil clay is improved effectively, and shield tunneling construction efficiency is improved.

Description

Technical field: [0001] The invention relates to a formation shield cutter head, in particular to a shield machine cutter head suitable for expansive old clay. Background technique: [0002] The shield method is a commonly used construction method in the construction of urban subway tunnels. Due to the differences in geological conditions in different regions, there are also huge differences in the structure and parameter requirements of the shield machine cutter head. [0003] At present, for shield excavation in general soft soil layers, there are relatively mature experiences. However, for the expansive old clay stratum, the existing shield machine cannot fully adapt to it, and abnormal wear of the cutterhead and cutter often occurs, and the distribution of the fishtail scraper, tooth cutter, edge scraper, tearing cutter, etc. in the cutter is reasonable. And the firmness of the installation can not meet the requirements, especially the phenomenon of mud cake is extreme...

Claims

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Application Information

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IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 傅一栋吴玮张辉郑鸿朴张斌屈通通戈仁杰许国良冯勇高江飞赵洪星杭翔岳涛涛谢灵运
Owner CHINA RAILWAY 16 BUREAU GRP BEIJING METRO ENG CONSTR
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