Method for machining advanced grouting block hole of shield tunneling machine

Abstract

The invention discloses a method for machining an advanced grouting block hole of a shield tunneling machine. The method comprises the specific steps as follows: two left cushion blocks are welded on the left side on a tooling bottom plate; a right cushion block is welded on the right side on the tooling bottom plate; six M30 tapping holes are drilled in the bottom plate and used for bolt connection of press blocks; on the basis that tooling assembly is finished and undrilled grouting blocks are clamped, a left inclined hole is milled empty by a minor-diameter milling cutter; a right inner solid hole is drilled to 300 mm deep by adopting a phi 50 drill bit preliminarily, then drilled to the same depth or further deeper by adopting a phi 80 drill bit, drilled through to the left milled inclined hole by adopting the phi 50 drill bit, and drilled through by adopting the phi 80 drill bit; and finally, a boring mill is adopted to bore the grouting block hole in place from the right solid hole to the left inclined hole on the basis of a conventional bottom hole, then the tooling is dismounted and burrs are removed, and the machining is finished. With the adoption of the method for machining the advanced grouting block hole of the shield tunneling machine, the problem that chip removal and cooling of the inclined hole, a deep hole and a drill hole are very difficult is solved, the machining efficiency is improved, and the expenditure of time and the machining cost are reduced.

Description

technical field [0001] The invention relates to the field of processing methods, in particular to a processing method for advance grouting block holes of a shield machine. Background technique [0002] The length of the through hole of the advanced grouting block of the shield machine is about 1000mm, and one side is an inclined hole, which is difficult to process. At present, there are two processing methods for the advanced grouting block of the shield machine: the first one is to directly use the boring machine to bore the hole without designing the processing method, but the inclined surface hole is easy to collapse. The second method: use two advanced grouting blocks to drill as a whole and then divide them into two pieces. The drilling length is about 1600mm. However, this method needs to use deep hole drilling. The existing equipment cannot meet the processing requirements, and the processing and positioning after division are relatively difficult. complex. If an or...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a shield machine that solves the difficult problems of inclined surface holes, deep holes, drilling chip removal and cooling, improves processing efficiency, reduces man-hour consumption and processing costs. The processing method of machine advanced grouting block hole

Images