Pneumatic fastening tool for shield conical surface arc scraping plate

Abstract

The invention relates to the technical field of tool clamps, in particular to a pneumatic fastening tool for a shield conical surface arc scraping plate. The pneumatic fastening tool is used for annularly arranging a plurality of workpieces into a conical body to be fixed at the top end of a workbench, and the workpieces comprise fan-shaped face boards and arc-shaped face boards. The pneumatic fastening tool comprises a bearing column, a limiting column, at least two annular radial supporting devices with different supporting diameters, a lifting ring, radial abutting devices and abutting pressing devices, wherein the bearing column is horizontally and fixedly arranged at the top of the workbench, and the limiting column is coaxially arranged at the top end of the bearing column; the annular radial supporting devices are coaxially arranged at the top end of the limiting column in sequence from large to small, each annular radial supporting device is formed by evenly distributing a plurality of radial pneumatic supporting devices along the axis of the bearing column, and the working ends of the radial pneumatic supporting devices horizontally face the inner arc surface of the conical body in the radial direction; and the lifting ring is arranged on the outer ring of the bearing column along the axis, the radial abutting devices are uniformly distributed at the top end of the lifting ring, and the abutting pressing devices are uniformly distributed at the top end of the limiting column along the axis of the bearing column. The tool is capable of effectively clamping the workpieces and supporting the workpieces from the inside.

Description

technical field [0001] The invention relates to the technical field of tooling fixtures, in particular to a pneumatic fastening tooling for shield cone arc scrapers. Background technique [0002] A shield machine is a tunnel boring machine that uses the shield method. The construction method of shield tunneling is the "shield" (referring to the supporting segment) of the tunnel constructed (laid) by the roadheader while excavating, which is different from the open construction method. Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open (non-shield method) tunnel boring machine. In our country, it is customary to call the tunnel boring machine used in soft soil formations (narrow sense) shield machine, and the one used in rock formations is called (narrow sense) TBM. According to the working principle, the shield machine is generally divided into hand-excavated shield, extrusion shield, semi-mechanical shiel...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a pneumatic fastening tool for the shield cone arc scraper. This technical solution solves the problem that the shield arc scraper is not easy to fix and easily collapses inward.

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