CN202092614U - Verticality measuring tool for vertical rod of scaffold - Google Patents

Abstract

The utility model discloses a measuring tool for the verticality of a scaffold pole, which is composed of a measuring end and a reading end. A plane coordinate system is formed with the longitudinal telescopic rod, the horizontal telescopic rod and the longitudinal telescopic rod are connected with a scale, one end of the scale is provided with a level plate, and an infrared emitter is installed on the level plate; the reading end The horizontal telescopic rod and the vertical telescopic rod with scale are also arranged on the top, and the horizontal telescopic rod and the vertical telescopic rod form another plane coordinate system, and the horizontal telescopic rod and the vertical telescopic rod are provided with a scale , and the planes formed by the two plane coordinate systems are parallel to each other. It is especially suitable for the measurement of verticality in the construction environment of high formwork systems, and has the advantages of convenience, speed, accuracy, and less influence by the construction environment.

Description

A tool for measuring the verticality of scaffolding poles

technical field

The utility model relates to a measuring tool, in particular to a measuring tool for the perpendicularity of a scaffold pole, which is mainly suitable for measuring the verticality of the pole of a tall formwork support system.

Background technique

The vertical pole of the scaffold is a pressure-bearing component that transmits construction loads. If there is an excessive initial eccentricity or initial bending during installation, it will be extremely unfavorable to the stress state of the vertical pole, which will reduce the bearing capacity of the scaffold and even lead to collapse due to instability. There are many hard lessons in this regard.

Among all kinds of collapse accidents in our country, the collapse of formwork brackets accounts for a large proportion. Due to the large number of pipe workers on the pouring operation surface of the high hall (roof) cover formwork brackets, the number of casualties often exceeds 20 when a collapse occurs . Entering 2010, three scaffolding accidents occurred successively in my country, including the collapse of the approach bridge under construction in Kunming New Airport, resulting in the serious consequences of 23 deaths and 43 injuries. According to statistics, from January to May 2010, there were 49 construction safety accidents nationwide, including 11 scaffolding collapse accidents, and the death toll accounted for 25.60% of the total death toll. The Ministry of Housing and Urban-Rural Development pointed out that while the total number of accidents and the total number of deaths have decreased, the total number of accidents is still relatively large. In 2010, a total of 627 production safety accidents occurred in housing and municipal engineering, with 772 deaths, a decrease of 57 accidents and 30 deaths compared with the same period last year, but the number of accidents and fatalities in production safety and above increased by 38.10 respectively year-on-year % and 37.76%, among which there are reasons for the continuous occurrence of formwork bracket collapse accidents. When various types of construction supports collapse during bearing and use, most of them will cause quite serious consequences. In particular, the overall collapse accidents of tall concrete floor (roof) covers and bridge formwork brackets during pouring often cause heavy casualties, huge economic losses and adverse social impacts. Not only will it cause irreparable trauma to the families of the victims, but it will also seriously endanger the survival and development of enterprises, and it will also bring enormous pressure to engineering safety supervision departments at all levels. During the erection of fastener-type scaffolding, the vertical pole is not vertical, which makes the vertical pole produce additional bending moment, which directly affects the stable bearing capacity of the formwork support. Under the circumstances, a large deformation occurs, which greatly reduces the stable bearing capacity of the scaffold.

The vertical pole is the most important kind of pole in the fastener-type steel pipe scaffolding. The verticality deviation of its installation is directly related to the safety and function of the scaffold. Therefore, it is necessary to measure the verticality of the vertical pole and strictly control it. Verticality of the pole. In actual engineering, workers usually determine the verticality of the pole by observation. Due to the strong subjectivity and randomness of the observation method, the error is relatively large, which is not conducive to the safety control of the high formwork system. In the case of low scaffold erection height, the verticality of the pole is often measured by the hammer line. The verticality of the pole is easy to cause entanglement, and there are many obstacles in the lower part of the frame, making it difficult to achieve accurate measurement. Some construction units use tools such as a ruler to measure the verticality of scaffold poles. The length that can be measured by a ruler is generally 2 meters. Therefore, using a ruler to measure the verticality of scaffold poles needs to be carried out in sections. Although it is feasible, However, it cannot fully reflect the deviation of the verticality of the entire pole, and the implementation is greatly affected by the site environment. Feng Yong et al. used theodolite to measure the verticality of the vertical pole of the formwork support in the "Research on the Safety of Formwork Support Based on Field Measurement". In the high-support formwork system, due to the small spacing between the vertical poles and the surrounding enclosures, there are many defects in using theodolite to measure the verticality of the vertical poles, which is difficult to achieve, and it is very inconvenient to move the instrument many times.

Contents of the invention

In view of the defects or deficiencies in the above-mentioned prior art, the purpose of this utility model is to provide a convenient, accurate and less affected by the construction environment. degree of measurement.

In order to achieve the above tasks, the utility model takes the following technical solutions:

A scaffold pole perpendicularity measurement tool is characterized in that it is composed of a measuring end and a reading end, the measuring end is provided with a horizontally scalable rod and a vertically scalable rod with scales, the horizontally scalable rod and the The longitudinal telescopic rod forms a plane coordinate system, the horizontal telescopic rod and the longitudinal telescopic rod are connected with a scale, one end of the scale is provided with a leveling plate, and an infrared transmitter is installed on the leveling plate; Also be provided with the horizontal telescopic rod and vertical telescopic rod with scale, this horizontal telescopic rod and longitudinal telescopic rod form another plane coordinate system, this horizontal telescopic rod and longitudinal telescopic rod are provided with scale, And the planes formed by the two plane coordinate systems are parallel to each other.

Other features of the utility model are: the scale on the reading end is perpendicular to the horizontal stretchable rod and the vertical stretchable rod, and the scale at the measuring end is scalable so that the infrared emitter can be translated to any position in the plane formed by the measuring end.

Since the scale on the measuring end is equipped with a level disk, the infrared transmitter can be kept horizontal, and the vertical transmission of the pole offset can be carried out by means of the infrared rays emitted by it, which can truly reflect the deflection of the upper end of the pole relative to its lower end value.

The tool for measuring the perpendicularity of scaffold poles of the utility model is especially suitable for measuring the verticality in the construction environment of high formwork systems, and has the advantages of being convenient, fast, accurate, less affected by the construction environment, and the like.

Description of drawings

Figure 1 is a schematic diagram of the measurement terminal structure;

Figure 2 is a schematic diagram of the structure of the reading end;

Fig. 3 is a schematic diagram of the installation and use process of the measuring tool;

FIG. 4 is a top view of FIG. 3 .

Below in conjunction with embodiment the utility model is described in further detail.

Detailed ways

According to the technical solution of the present invention, the verticality measuring tool of the scaffolding pole is composed of two parts, the measuring end and the reading end (see Fig. 1 and Fig. 2), which are independent and interconnected.

The measuring end includes a horizontal telescopic rod and a vertical telescopic rod 2 with scales, the horizontal telescopic rod and the longitudinal telescopic rod 2 constitute a plane coordinate system, and the horizontal telescopic rod and the vertical telescopic rod 2 are connected with telescopic scale 3, and one end of the scalable scale 3 is provided with a level plate 4, and an infrared emitter 5 is installed on the level plate 4; the vertical level of the infrared emitter 5 is calibrated and adjusted by the level plate 4 provided at the measuring end. to ensure accurate measurement results.

The reading end is also provided with a horizontally telescopic rod and a vertically telescopic rod 6 with scales, and a scale 7 is arranged on the horizontally telescopic rod and the vertically telescopic rod 6, wherein the scale 7 and the horizontally telescopic rod and the vertically telescopic rod The telescopic rods 6 are perpendicular to each other.

Using the verticality measuring tool of the scaffold pole of the present utility model, the installation process is shown in Fig. 3 and Fig. 4, and the steel column 1 at the measuring end is inserted into the upper end of the vertical pole of the high formwork system, and the horizontally telescopic rod and the vertically adjustable pole on the measuring end are The telescopic rod 2 forms a plane coordinate system; the reading end is connected and fixed to the lower end of the vertical rod of the high-support formwork system with a fastener 8, and the horizontal and vertical telescopic rods 6 on the reading end are at the lower end of the vertical rod of the high-support formwork system A plane coordinate system is formed, and the planes formed by the two plane coordinate systems are parallel to each other.

Pull the horizontal telescopic rod and the vertical telescopic rod 2 at the measuring end, so that the infrared transmitter 5 on the scale 3 can be moved to any position in the plane of the measuring end, so as to avoid the deflection of the cross bars, fasteners and lower cross bars of the formwork system Due to the occlusion caused by adjusting the level plate 4 at the measuring end, the infrared emitter 4 at the measuring end emits rays vertically and irradiates the plane formed by the horizontal and vertical stretchable rods 6 at the reading end. 7, read the position of the irradiation line point, and by means of the movable scale 7 at the reading end, the deflection values of the vertical rod of the high-support formwork system in two mutually perpendicular directions can be obtained.

Claims (3)

1. scaffold upright rod squareness measurement instrument, it is characterized in that, combine by measuring junction and reading end, described measuring junction is provided with horizontal telescopic rod and the vertical telescopic rod that has scale, laterally telescopic rod and vertically plane coordinate system of telescopic rod formation, be connected with rule on this horizontal telescopic rod and the vertical telescopic rod, this rule one end is provided with Level plate, on this Level plate infrared transmitter is installed; Also be provided with the horizontal telescopic rod and the vertical telescopic rod that have scale on the described reading end, this horizontal telescopic rod and vertical telescopic rod constitute another plane coordinate system, this horizontal telescopic rod and vertical telescopic rod are provided with rule, and two planes that plane coordinate system constituted are parallel to each other.

2. scaffold upright rod squareness measurement instrument as claimed in claim 1 is characterized in that, the rule on the described reading end is with laterally telescopic rod is vertical mutually with vertical telescopic rod.

3. scaffold upright rod squareness measurement instrument as claimed in claim 1 is characterized in that the rule of described measuring junction is scalable, makes infrared transmitter can move to optional position in the plane that measuring junction constitutes.

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