Drilling positioning device

Abstract

The invention relates to the field of construction of nuclear power plants, in particular to a drilling positioning device for drilling medium and large equipment of a nuclear power plant. In order to improve the success rate of drilling with an electric pistol drill and lower the construction risk, the drilling positioning device is provided. A supporting structure comprises a supporting plate, a connecting plate and two clamping plates, wherein the clamping plates are connected with the supporting plate at the ends of the supporting plate to form a U-shaped structure, and the connecting ends of the clamping plates are connected with the connecting plate. A drill bit positioning hole is formed in a positioning template. A drill bit reserved hole is formed in a drilling positioning plate. When the drilling positioning device is used, the positioning template is fixed to the connecting plate, the drilling positioning plate is parallel to the positioning template and fixed to the positioning template, the central axis of the drill bit reserved hole and the central axis of the drill bit positioning hole are overlapped, and the drill bit positioning hole and the drilling position of a surface to be drilled are aligned. According to the drilling positioning device, the drilling position and the drilling direction of a drill bit are limited through the drill bit reserved hole and the drill bit positioning hole, the drilling quality is improved, and the drilling construction risk is lowered.

Description

technical field [0001] The invention relates to the field of nuclear power plant construction, in particular to a drilling positioning device for drilling medium and large equipment in the nuclear power plant. Background technique [0002] During the construction of a nuclear power plant, it is often necessary to drill holes on some large equipment in the nuclear power plant, such as pressure vessels. When drilling such large equipment, especially when drilling non-detachable parts on such large equipment, only magnetic power drills or pistol drills can be used to complete the drilling work. In addition, when the non-detachable parts to be drilled are made of stainless steel, the magnetic electric drill cannot be used. At this time, a pistol electric drill must be used for manual drilling. [0003] In the construction of nuclear power plants, some drilling construction is irreversible, and it is required that the drilling must be successful once. When the operator uses a p...

AI Technical Summary

Problems solved by technology

When the operator uses a pistol electric drill to carry out manual drilling for this type of drilling construction, since the drilling quality of the manual drilling is completely restricted by the operator's technical level, the construction risk is relatively high, and even the overall replacement due to drilling errors Large-scale drilling equipment, which leads to delays in the construction of nuclear power plants and serious economic losses

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