Full-face tunnel boring machine multifunctional cutterhead suitable for complex stratums

Abstract

The invention discloses a full-face tunnel boring machine multifunctional cutterhead suitable for complex stratums. The full-face tunnel boring machine multifunctional cutterhead comprises a cutterhead body, a plurality of cutter holders movably mounted on the cutterhead body, and cutters mounted on the cutter holders, wherein the cutterhead body comprises a flange, a cutterhead panel, and a connecting rib plate welded between the periphery of the flange and the cutterhead panel, and the connecting rib plate comprises a ring beam welded to the outer ring of the connecting rib plate and a star-shaped cutter beam welded on the ring beam. Sliding grooves are formed in the cutter beam in the radial direction, the two side walls of the cutter holders are arranged in the sliding grooves in eachdirection of the cutter beam in a sliding fit mode, threaded holes are evenly distributed in the cutter beam, and after the cutters are adjusted in place, the cutter holders are matched with the threaded holes through first screws to be arranged on the cutter beam so that the cutter installation distance can be adjusted, and the cutterhead adapts to full-section tunneling of the complex stratums.

Description

technical field [0001] The invention relates to the technical field of full-section tunnel boring machines, more specifically, it relates to a multifunctional cutter head of full-section tunnel boring machines adaptable to complex formations. Background technique [0002] The full-section tunnel boring machine is a modern tunnel excavation equipment, and the cutter head is the core component of the full-section tunnel boring machine for rock breaking. [0003] At present, the layout of full-section tunnel boring machine cutterheads depends mostly on the experience of technicians, and there is no roadheader cutterhead that can adapt to changes in different strata and change the distribution state, resulting in poor adaptability to complex strata. In hard rock formations, if the distance between the cutters is too large, the rock-breaking ability of the cutter is poor, and the cutter is easily damaged by overload; if the distance between the cutters is too small, the rock-brea...

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Problems solved by technology

[0003] At present, the layout of the cutter head of the full-section tunnel boring machine is mostly based on the experience of the technicians, and there is no cutter head that can adapt to changes in different strata and change the distribution state, resulting in poor adaptability to complex strata.

In hard rock formations, if the distance between the cutters is too large, the rock-breaking ability of the cutter is poor, and the cutter is easily damaged by overload; if the distance between the cutters is too small, the rock-breaking ability is enhanced, but the cutter wears seriously; The thrust of the roadheader, some cutters may be overloaded and fail, but the actual force of the cutters in different positions varies greatly

If the cutter does not rotate, the cutter will wear out in a short time, causing abnormal damage to the cutter in the nearby area. If the cutter is arranged flat, the rock cannot form a free surface, and the rock breaking effect of the cutter is not good.

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