Equipment base pre-reservation round anchor bolt hole die

Abstract

The invention relates to a round hole die of an equipment base pre-reservation anchor bolt hole, in particular to an equipment base pre-reservation round anchor bolt hole die, which is characterized in that the equipment base pre-reservation round anchor bolt hole die comprises a center shaft, a first bracing and shrinking device, a second bracing and shrinking device, four templates and four joint sealing plates, wherein the four templates are all in an arc shape and uniformly distributed along a circumference, each joint sealing plate is inserted between two adjacent templates, the four templates and the four joint sealing plates enclose to form a cylindrical space, first template supports on the four templates are all articulated to the first bracing and shrinking device, second template supports on the four templates are all articulated to the second bracing and shrinking device, the lower part of the center shaft, the first bracing and shrinking device and the second bracing and shrinking device are all arranged in the cylindrical space enclosed by the four templates and the four joint sealing plates, the upper part of the center shaft is arranged above the cylindrical space and is provided with outside threads, and a handle is arranged at the upper end of the center shaft. The die is simple to operate and rapid to disassemble and can be used repeatedly.

Description

technical field [0001] The invention relates to a round hole mold with reserved anchor bolt holes for equipment foundations. Background technique [0002] In the construction of the equipment foundation, the foundation bolt holes of the equipment need to be reserved on the concrete foundation. The reserved method generally adopts the methods of supporting steel bellows, plastic pipes or supporting wooden formwork, etc., and removes them in time after the concrete solidifies. The steel corrugated pipe adopts a tool with a slot at one end and a handle at the other end. The slot is clamped to the steel bellows, and the steel corrugated pipe is peeled off layer by layer. The removal effect is not satisfactory; the plastic pipe is baked at high temperature to make it soft, and then Pulling out as a whole, the method sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes; the wooden formwork adopts a s...

AI Technical Summary

Problems solved by technology

The steel corrugated pipe adopts a tool with a slot at one end and a handle at the other end. The slot is clamped to the steel bellows, and the steel corrugated pipe is peeled off layer by layer. The removal effect is not satisfactory; the plastic pipe is baked at high temperature to make it soft, and then Pulling out as a whole, the method sometimes causes the plastic pipe to break off, which directly affects the strength of the secondary grouting of the anchor bolt holes; the wooden formwork adopts a square pyramid-shaped wooden box structure with a large upper opening and a smaller lower opening, with small cross-section and deep depth. For deep holes, there will be various difficulties such as difficulty in force and limited space when dismantling

In order to improve the pull-out bearing capacity of bolts, a structure with the lower opening slightly larger than the upper opening is often used. Steel bellows and plastic pipes are standard materials, which cannot meet the requirements. requirements, and cannot be removed

Namely: the anchor bolt hole is characterized by a long and narrow space with a large aspect ratio, so it brings great inconvenience to the demolition, and its formwork cannot be reused during the demolition process

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