Simple and accurate positioning device and method for pre-burying and trepanning pay-off hole

Abstract

The invention discloses a simple and accurate positioning device and method for pre-burying and trepanning a pay-off hole. The device is composed of two parts; the upper part comprises an inverted double-circular-truncated-cone-shaped laser projection cylinder, the inverted double-circular-truncated-cone-shaped laser projection cylinder is of a structure with an upper layer and a lower layer, the upper layer is cylindrical, the lower layer is circular-truncated-cone-shaped, the upper layer is hollow and is provided with an infrared laser projection head and a battery, and a level bubble is embedded in the circular-truncated-cone-shaped surface of the lower layer; and the lower part is a cylindrical double-ring-shaped leveling base which is provided with an adjusting bolt. The device can be repeatedly used, and is simple to manufacture, easy to operate and high in precision, so that the construction operation time is shortened, and the number of operators is reduced. Compared with a conventional plumb bob instrument for plumbing, the pay-off construction efficiency is improved, the construction investment is reduced, and good economic benefits and social benefits are generated.

Description

technical field [0001] The invention belongs to the technical field of building engineering construction, and in particular relates to a simple and precise positioning device and a positioning method for pre-embedded hole opening of a wire release hole. Background technique [0002] At present, the setting out of civil engineering (housing engineering) starts from the positioning of the building, and it is inseparable from the setting out of the construction until the capping of the main project. Roughly divided into three stages: 1. Setting out for building positioning; 2. Setting out for foundation construction; 3. Setting out for main body construction. In the construction process of the main body of the building, the traditional construction setting-out method can use the hammer method, external control method and internal control method, but for high-rise buildings, due to the influence of the height of the storey and the external scaffolding, the internal control metho...

AI Technical Summary

Problems solved by technology

It solves the problem that the wire hole is easy to shift and not square, and the wire hole template is not easy to remove when the internal control method is used to measure the wire. The internal control method measures the wire hole. A special mold is reserved, including fixed on the upper side of the floor formwork with a cross-section of A mold composed of isosceles trapezoidal tetrahedrons, the bottom of the mold is fixed with a bottom plate, and the center of the bottom plate is nailed with iron nails

[0004] However, the set-out holes reserved in traditional construction are relatively large, generally more than 150mmX150mm. Whether it is the opening protection of the main body construction in the early stage, or the formwork at the opening in the later stage, roughing around the opening, planting reinforcement, and pouring concrete with a higher grade, it is necessary. Greatly increase the cost; and due to the many processes, if the treatment is not good, the probability of rework will increase, and the effect is not easy to control

Our team has developed a precise setting-out hole device to solve the above-mentioned technical problems. However, during the setting-out construction, the positioning of the pre-embedded device for the setting-out hole before concrete pouring is still carried out by the traditional plumb meter throwing point method for positioning and opening. The whole process is cumbersome to operate, and the projection point often requires multiple layers of projection for one control point. Various factors such as increased projection distance, large changes in laser focus, and long-distance cooperation of operators lead to increased positioning and opening accuracy errors, and operator workload. is too big

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