A mold for making preset threaded holes in concrete components and a method for making preset threaded holes

Abstract

The invention discloses a die and a method for making a pre-drilled threaded hole of a concrete member. The die for making the threaded hole and the method for making the threaded hole by using the die are mainly used for the jointing of the concrete member. The die comprises a threaded model sleeve, an insertion tube with the threaded model sleeve and a hole making template for fixing the insertion tube. The diameter of the threaded model sleeve can be adjusted, and the threaded model sleeve is arranged on the insertion tube, and is arranged in a concrete die in advance through the hole making template. When concrete is initially set, the insertion tube is pulled out, the threaded model sleeve is automatically retracted and ejected from the concrete, and a similar thread is reserved in a formed concrete hole. In such a way, the conventional threaded hole making tool is decomposed into the threaded model sleeve with the adjustable diameter and the insertion tube, so that the limitation of diameters of sleeves on a construction site and the setting time of the concrete to the making of the pre-drilled threaded hole of the concrete member is broken, the construction speed is high, a making flow for the threaded hole of the concrete member is easy to operate, and the requirements of large-scale production are met.

Description

[0001] Involved areas [0002] The invention relates to the field of construction, in particular to a mold and a manufacturing method for internal threads in reserved holes used for butt jointing of concrete components. Background technique [0003] In building construction, the butt joint of two concrete components is a common construction form; the anchor bar is pre-embedded on the butt end surface of one concrete component, and the reinforcement hole is preset on the butt end surface of the other concrete component; when the two components are butt joint, First, pour the adhesives such as casing epoxy resin concrete or sulfur mastic into the hole for inserting the reinforcement, and then insert the anchor reinforcement, and the butt ends of the two components are bonded together; in order to strengthen the tensile and shear performance of the joint, it is required A clear-cut thread or similar concave-convex structure is made on the inner wall of the reinforcement hole. Be...

AI Technical Summary

Problems solved by technology

Because the concrete after final setting will cause a lot of concrete to fall off when drilling, the traditional drilling method cannot be used

The current method of making pre-set holes is usually to use a threaded tool in the shape of a screw rod. When pouring concrete, it is preset in the concrete. When the concrete is vibrated, the threaded tool is rotated in good time according to the temperature and concrete solidification time. The operating handle left on the outside of the concrete mold is slowly withdrawn from the thread tool to make threaded holes; this method is too random, extremely difficult to operate, and low in work efficiency. Usually, 1-2 prefabricated holes require a special person to be on duty. Will not miss the opportunity to form holes, and cannot meet the needs of large-scale production at all

Images