An adjustable anchor bolt pre-embedded nut structure

Abstract

The invention discloses an adjustable anchor bolt pre-embedded nut structure, which is characterized in that it comprises a sleeve, an anchor bolt, a buried plate, a concave ring, a convex ring and a pre-embedded nut; the sleeve and the buried plate are welded as Embedded in concrete as a whole; the anchor bolts penetrate the sleeve to the bottom of the buried plate, and the concave ring, convex ring and pre-embedded nut are sequentially put on the position below the buried plate; the outer diameter of the concave ring is larger than the inner diameter of the sleeve; the There is a movable space for the concave ring, the convex ring and the embedded nut under the buried plate; the inner diameter of the sleeve is larger than the outer diameter of the anchor bolt, so that the anchor bolt has a horizontal displacement space in the sleeve. The use of this structure can correct the position deviation and vertical deviation of the embedded parts of the anchor bolts, so as to avoid failure to meet the design requirements during on-site installation, causing interference with equipment or rework, thereby affecting the installation progress.

Description

technical field [0001] The invention relates to a fixing device for a ground part of a steam turbine, in particular to an adjustable anchor bolt pre-embedded nut structure. Background technique [0002] The ground-supported bearing housing, low-pressure cylinder, valve bracket and other components in the steam turbine are mainly connected to the foundation through anchor bolts. In addition to the type of anchor bolts that completely penetrate the foundation, in order to avoid the anchor bolts being too long or because there is no installation and operation space at the bottom of the foundation, more types are embedded and fixed at one end of the anchor bolts in the foundation, and the embedded nuts and embedded plates welded together. However, due to factors such as positioning deviation and concrete shrinkage during the foundation grouting process, most of the anchor bolts embedded in the foundation at one end will have a certain degree of deviation in horizontal position ...

AI Technical Summary

Problems solved by technology

However, the power plant does not have the processing capacity of large-scale equipment, and it is often necessary for the power plant to measure the deviation size of the embedded parts, and then the steam turbine manufacturer matches the positioning holes on the equipment according to the measured data, which is time-consuming and laborious, and affects the production progress of the equipment.

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